• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for producing a coated body (1), wherein the body (1) is provided and on the body (1) a multilayer coating is deposited, which has at least one coating layer (2) with AlxTi1-xN. According to the invention, it is provided that the coating layer (2) with AlxTi1-xN is deposited on a TiCN coating layer (3) with elongated crystals of TiCN, in which titanium optionally up to 40 mol% may be replaced by aluminum. With such a method, an extremely wear-resistant coating can be achieved in an economical manner. Furthermore, the invention relates to a correspondingly produced coated body (1).
    公开号:AT510963A4
    申请号:T384/2011
    申请日:2011-03-18
    公开日:2012-08-15
    发明作者:Reinhard Dipl Ing Pitonak；Ronald Dr Weissenbacher；Arno Dr Koepf
    申请人:Boehlerit Gmbh & Co Kg；
    IPC主号:
    专利说明:

    1
    Coated body and process for its preparation
    The invention relates to a method for producing a coated body, wherein the body provided and on the body a multi-layer coating 5 is deposited, which has at least one coating with ΑίχΊΊι.χΝ.
    Furthermore, the invention relates to a coated body with a multilayer coating which has at least one coating layer with AlxTii_xN. It is known from the prior art that cutting tools or
    Cutting inserts are coated to increase tool life in the cutting insert with coating layers composed of titanium, aluminum and nitrogen. In general, this is often referred to as TiAIN coating layers, wherein an average chemical composition, regardless of whether one or 15 phases present in the coating layer is given by Τί ^ ΑΙχΝ. For coating layers containing more aluminum than titanium, the nomenclature AITiN or more precisely AlxTii.xN is also common.
    It is known from WO 03/085152 A2 to produce in the system AITiN monophasic coating layers having a cubic structure, wherein a cubic structure of the AITiN is obtained with a relative proportion of aluminum nitride (AIN) of up to 67 mol% (mol%). At higher AIN contents of up to 75 mol%, a mixture of cubic AITiN and hexagonal AIN and at an AIN content of more than 75 mol% exclusively hexagonal AIN and cubic titanium nitride (TiN) is formed. According to the cited document, the described AITiN coating layers are deposited by means of physical vapor deposition (PVD). With a PVD process, maximum relative proportions of AIN are practically limited to 67 mol%, since otherwise it would be possible to overturn in phases containing aluminum only in the form of hexagonal AlN. However, a higher relative proportion of AIN in a cubic phase is desirable to maximize wear resistance as much as possible.
    It is also known from the prior art to use chemical vapor deposition (CVD) instead of PVD processes, in which case a CVD process is to be carried out at relatively low temperatures in the temperature window of 700 ° C. to 900 ° C., since * *. φ »· · · · · · · · · ·.» · · · · · · ·. »· · · · · · ♦ · ♦ 2 cubic AITiN coating layers at temperatures of approx. B. z 1000 eC can not be produced due to the metastable structure of such coating layers. Optionally, the temperatures according to US Pat. No. 6,238,739 B1 can also be lower, specifically in the temperature window from 550 ° C. to 650 ° C., although high chlorine contents in the coating layer are to be accepted, which proves disadvantageous for an application has therefore tried to optimize CVD processes so that they can be produced with these AITiN coating layers with a high proportion of aluminum and cubic structure of the coating layer (I. Endler et al., Proceedings Euro PM 2006, Ghent Belgium, 23 to 25 October 2006, Vol. 1.219). Although these coating layers have a high microhardness and thus generally favorable properties for high wear resistance in use, it has been found that an adhesive strength of such coating layers can be too low. In this regard, it has therefore been proposed in DE 10 2007 000 512 B3, below a cubic AITiN coating layer, which is 3 pm thick, 15 to provide a 1 pm thick coating layer, which is formed as a phase gradient layer and a phase mixture of hexagonal AlN, TiN and cubic AITiN, wherein a cubic AITiN content with outward or to the (exclusively) cubic AITiN coating layer has an increasing proportion. Correspondingly coated cutting plates were used for milling steel, 20 but only slight improvements in wear resistance were achieved with respect to coating layers produced by means of a PVD process.
    In addition to only a slight improvement in wear resistance, another disadvantage of a bonding layer according to DE 10 2007 000 512 B3 is that the bonding or phase gradient layer grows extremely fast, even in experiments on a laboratory scale (I. Endler et al., Proceedings Euro PM 2006, Ghent, Belgium, 23 to 25 October 2006, Vol. 1.219). When produced in a larger reactor designed for large-scale coating of cutting inserts, this results in the bonding or phase gradient layer being provided
    Coating process is extremely thick, since a temperature for forming the ultimate intended cubic AITiN is lower, which requires appropriate time. During this lowering of a process temperature, however, a thickness of the bonding or phase gradient layer grows rapidly, because in a large-scale process, in an industrial scale,
    ft ft. ft. ft. ft. ft. ft. ft. ft. ft... ft
    Reactor fast cooling is not possible. It would be conceivable to interrupt the coating process for a longer time or cooling, which is not economical. 5 object of the invention is to provide a method of the type mentioned, with the economical manner, a highly wear-resistant coating can be applied.
    Another object of the invention is to provide a body of the type mentioned, which is economical to produce and has a high wear resistance. 10
    The method according to the invention is achieved in that in a method of the type mentioned, the coating layer with AlxTi1xN on a TiCN coating layer with elongated crystals of titanium carbonitride (TiCN) is deposited in the titanium optionally be replaced by aluminum up to 40 mol% can. 15
    An advantage achieved by the invention lies in the fact that deposition of a coating layer of TiCN with elongated crystals of TiCN can take place in a temperature window, which in the case of a large-scale reactor with simultaneous deposition of this coating layer cools to a temperature required for a subsequent deposition allows the coating layer with ΑΙχΤί ^ Ν, without the TiCN coating layer is too thick. In addition, it has been shown that the TiCN coating layer is not merely a favorable bonding layer, which ensures good adhesion of the coating layer with AlxTii.xN, but also has an extremely advantageous effect on the morphology in the subsequently deposited AlxTii.xN coating layer adherent, highly wear-resistant coating layer with AlxTii-xN is obtained. In particular, it has been found that the coating layer with AlxTii.xN is formed in the region of a connection to the TiCN coating layer with a lamellar structure. The reasons for this are not yet known, but it is assumed that epitaxial growth takes place at least in the immediately adjacent regions of the coating layers. In the further course of the deposition of the Beschichtungsiage with ΑΙχΤϊ ^ Ν, the morphology may change. Overall, the corresponding morphology of the coating layer with AUTi ^ N seems to be responsible for the high wear resistance, which is confirmed by microhardness measurements, according to which said coating layer has a microhardness of at least 3100 HV0, oi.
    It is preferably provided that the TiCN coating layer is deposited at a temperature of 5,800 ° C. to 880 ° C. Basically, for the production of the
    TiCN coating layer with elongated crystals and lower temperatures are selected, but then then again heating should take place to deposit the coating layer with AlxTii.xN. The TiCN coating layer is expediently deposited with a thickness of up to 7 μm, preferably 2 to 5 μm. A corresponding thickness is sufficient to give the coating overall a required toughness or to avoid any possible tensile and / or compressive stresses as far as possible. A certain toughness of the coating as a whole is also required since the coating layer with ΑΙχΤη.χΝ has a high hardness and therefore a rather low toughness.
    The preparation of the TiCN coating layer can, as known from the prior art, take place. In this regard, the TiCN coating layer is expediently deposited from a gas containing or consisting of nitrogen, hydrogen, acetonitrile and titanium tetrachloride. To be at the comparatively high
    Temperatures of the deposition of the TiCN coating layer of 800 ° C to 880 ° C to control a thickness of this coating layer specifically, in contrast to the prior art, the gas can be used with a higher nitrogen content than hydrogen content, whereby a deposition rate can be kept low. It is expedient in this regard that the nitrogen content is at least twice, preferably at least four times, in particular six times, the hydrogen content. The coating layer of AlxTi1xN is preferably deposited at a temperature equal to or below a temperature of deposition of the TiCN coating layer. Thus, a process for producing a coating with respect to a temperature guide can be made efficient. It is then possible, starting from an initial temperature, to continuously lower the temperature during production of the coating layer, whereby a favorable coating can be obtained in a short time. · * »·· 5
    Preferably, the coating layer is deposited with A1xTi -,. XN at a temperature of 800 ° C to 830 ° C.
    In order to obtain a favorable formation of the coating layer with AlxTii.xN, this 5 is deposited from a first mixture of nitrogen, hydrogen and titanium tetrachloride and a second mixture of nitrogen and NH3, wherein a deposition can take place at a pressure of 20 to 40 mbar. The coating layer with AlxTh.xN is preferably deposited with a thickness of 3 to 10 pm. By the appropriate process parameters, a coating layer with AlxTii.xN 10 can be deposited, which has an aluminum content of more than 90 mol% compared to titanium and is predominantly formed with a cubic structure, wherein as a rule a proportion of hexagonal AIN in the extent of up to 30 mol% and lower contents of up to 8 mol% ΤΊΝ present. A method according to the invention can be used for coating any body, but is preferably used when a body made of a hard metal is to be coated. Cemented carbides are customary variants of carbides and / or carbonitrides and / or nitrides of metals such as tungsten, titanium, tantalum , Vanadium and / or niobium bound by a binder metal such as cobalt and / or nickel and / or iron. Typically, the cemented carbide consists of particles of tungsten carbide, optionally with minor proportions of carbides, carbonitrides and / or nitrides of titanium, with a binder metal content of up to 20 weight percent (wt%), preferably up to 12 wt% , If a body of cemented carbide is used as the body, then it is expedient to deposit a TiN bonding layer directly thereon, preferably with a thickness of less than 1.0 μm. Such a bonding layer allows, with the minimization of tensile and / or compressive stresses, a deposition of further layers, wherein, for example, in the case of cobalt, the binding metal diffuses into the deposited TiN bonding layer, which leads to a high adhesive strength of the coating as a whole. The TiCN coating layer can be deposited on the bonding layer.
    In the context of a method according to the invention, it is expedient for efficient or cost-effective process control because at least one coating layer, preferably all, are deposited by means of a CVD method. In this regard, it proves to be particularly expedient if in each case a deposition temperature is lowered or held during the deposition of the bonding layer and subsequent deposition of each coating layer. 5 The further object of the invention is achieved in that in a coated body of the type mentioned, the coating layer with AlxTii.xN on a TiCN coating layer with elongated crystals of TiCN is deposited, in the titanium optionally up to 40 mol% by aluminum can be replaced. 10 advantages of a body according to the invention are in particular that in this the coating not only adherent, but also highly resistant to wear. The result of this is that a corresponding body, which can be designed, for example, as a cutting tool or cutting insert for this purpose, is wear-resistant in use, in particular even at high temperatures, such as, for example, in milling 15 metallic materials, in particular steels or cast materials, the more than 2% by weight of carbon in the form of graphite. In addition, the coating can be deposited in an economical manner.
    In this case, the TiCN coating layer has longitudinally extended crystals, which preferably extend predominantly at an angle of ± 30 ° to a surface normal of the body. With a corresponding TiCN coating layer, a good bonding of the subsequently deposited coating layer with AlxTii.xN results. In this regard, it is desirable that the TiCN coating layer has an average composition TiCaNi ^ with a in the range of 0.3 to 0.8, particularly 0.4 to 0.6.
    With regard to the coating layer with ΑΙχΤΐ ^ χΝ, it is preferable that it has an average composition AlxTi1.xN, wherein x a is 0.7 and hexagonal AIN is present in a proportion of more than 0 to 30 mol%. Such a formation of the coating layer with AlxTii.xN has proved to be particularly favorable. In contrast to the prior art, a certain limited proportion of hexagonal AlN is found to be favorable in terms of overall wear resistance of the coating. It is believed that toughness of the per se particularly hard coating layer with predominantly cubic · * * 4 ·· * · · · · · · 7 ΑΙχΤίμχΝ is achieved by small amounts of hexagonal AlN, so that this coating layer in addition to high adhesion and hardness also sufficient Has toughness to withstand high loads as long as possible. The coating layer with AlxTii-xN can be formed an outermost coating layer and / or with a thickness of 4 to 10 pm. In this context it can be provided that x > 0.75, preferably 0.80, in particular 0.85. A proportion of hexagonal AlN in this respect is preferably more than 12.5 mol%, preferably more than 15.0 mol%, in particular more than 20.0 mol%. 10 A content of cubic AlxTii.xN phase in the coating layer with AlxTi | .xN is at least 70 mol%, preferably 70 to 80 mol%. The remaining parts are formed by hexagonal AIN and cubic TiN.
    It can be provided that the coating layer with ΑΙχΤί ^ Ν has wholly or at least 15 partially crystals with a lamellar structure, in particular in a region of the connection to the TiCN coating layer. In this case, a lamellar structure of the crystals may have lamellae with a thickness of less than 100 nm, preferably less than 50 nm, in particular less than 25 nm. When the body is formed from a hard metal, a bonding layer of TiN, preferably with a thickness of less than 1.0 μm, is preferably deposited on the body in order to achieve a good bonding of the coating to the cemented carbide body as a whole. The TiCN coating layer is then preferably deposited directly on the bonding layer. 25 For an effective or economic process management, it is expedient that all coating layers are deposited by means of CVD methods.
    Further features, advantages and effects of the invention will become apparent from the embodiment shown below. In the drawings, to which reference is made, show:
    Fig. 1 is a schematic representation of a coated cutting insert; i "« «« · · · · · · · · · · · · · · · · · · · · · · · · · ft · ft · ft · ft · ft · »♦ ·· # · ft« 8
    FIG. 2 shows a transmission electron micrograph of a part of a coated cutting insert; FIG.
    FIG. 3 shows a transmission electron micrograph of a ΑΙΤΊΝ-coating layer; FIG. Fig. 4a shows a free surface of a cutting insert after a predetermined period of use; 4b shows a free area of a cutting insert after a predetermined period of use; 5a shows a rake face of a cutting insert after a predetermined period of use; Fig. 5b is a rake surface of a cutting insert after a predetermined period of use. 10 In Fig. 1, a body 1 is schematically shown, which has a multilayer coating. The coating is applied to the body 1, wherein all layers are each created by means of a CVD method. The body 1 can be made of any material, but usually consists of a hard metal consisting of carbides and / or carbonitrides of tungsten, titanium, niobium or other metals and a binder metal selected from the group consisting of cobalt, nickel and iron. One
    Bindemetallanteil is usually up to 10 wt .-%. Typically, the body 1 consists of up to 10% by weight of cobalt and / or other binder metals, with the remainder tungsten carbide and up to 5% by weight of other carbides and / or carbonitrides of other metals. On the body 1, a bonding layer 4 of TiN is deposited, which in the rule has a maximum thickness of 1.0 pm. On the bonding layer 4, for example, a 2 to 5 μm thick layer of TiCN is deposited as an intermediate layer, which is a middle temperature TiCN (MT-TiCN) coating layer. Such a coating layer usually has a columnar structure with stalked crystals, which are aligned substantially parallel to the surface normal to the body 1 25. On this intermediate layer or MT-TiCN coating layer 3, finally, a coating layer 2 with ΑΙχΤη.χΝ deposited, which has an average molecular formula AlxTii-xN, where x is 0.7 pounds. This coating layer 2 with ΑΙχΤί -, χΝ has more than 70 mol% of cubic AITiN and, moreover, consists of 15 to 25 mol% of hexagonal AlN. The rest is TiN. 30
    A coating as shown in Fig. 1 can be deposited on a cutting insert, in particular an insert, by providing the body 1, after which in a first step, the TiN bonding layer 4 at a process temperature of 870 ° C to 880 ° C from a Gas containing nitrogen, · «» * Μ ··· ·· «·« · + »« · · · • # · * * »9
    Hydrogen and titanium tetrachloride is deposited. Subsequently, the temperature is lowered and deposited at a temperature of 830 ° C to 870 ° C, the intermediate layer 3 and an MT-TiCN coating layer with a thickness of 2 to 5 μπι. The deposition takes place from a gas consisting of nitrogen, hydrogen, acetonitrile 5 and titanium tetrachloride. The corresponding process temperature and the use of acetonitrile as carbon or nitrogen source ensures formation of the interlayer with columnar growth or TiCN stranded crystals, which extend on the body 1 substantially parallel to the surface normal. On this intermediate layer, where titanium can be replaced by aluminum up to 40 mole% to increase its hardness, finally the coating layer 2 is applied with AUTi ^ N, for which the temperature is lowered to about 800 ° C to 825 ° C becomes. The outermost coating layer 2 is made of a gas containing ammonium trichloride, nitrogen, hydrogen, titanium tetrachloride and a separately supplied mixture of ammonia and nitrogen. Thus, in a second step for producing the intermediate layer and in a third step for producing the outermost layer
    Coating layer 2 with ΑΙχΤί ^ Ν each lowered a process temperature, which is extremely economical and allows rapid creation of the coating on the cutting insert. 20 The following tables show typical process parameters in the production of a coating and the properties of individual coating layers.
    Table 1 - Process parameters
    Temperature (° C) Gas composition / gas flow (l / min) or TiCl4 and CH3CN (ml / min) Coating layer TiN 880 - 900 TiCU / 2.7, Na / 14, Hj / 17 MT-TiCN 750 - 850 CHaCN / OS , TiCU / 2,7, N2 / 19, H2 / 3 AITiN 750-850 HCI-AICl3 / 2,7-0,9, TiCU / 0,3, NH3-N2 / 0,9-4,5, Ha / 64 25 10 * · »«
    Table 2 - Properties of the coating layers
    Coating layer Coating thickness (pm) Composition generally preferred TiN <2 0.25-0.75 TiN MT-TiCN 1-10 2-5 TiCaN ^, a = 0.4-0.6 AITiN 1-10 3-8 AlxTi , * N, x = 0.85 - 0.98
    The outermost coating layer 2, when viewed in a transmission electron microscope, exhibits a columnar growth at least in a region adjacent to the intermediate layer 3, wherein, as can be seen from FIGS. 2 and 3, very fine fins are present which have a lamella thickness of less than 25 nm exhibit. It is assumed that the outermost coating layer 2 grows epitaxially on the intermediate layer 3 provided in the exemplary embodiment. 10 cutting inserts of a particular type were coated as described above. For comparison, a variety of structurally analogous cutting tools were provided with alternative coatings, primarily with ΑΓΠΝ coatings and bonding layers, each using a PVD process. The cutting inserts thus produced were then tested for tool life in a dry machining of steels and cast materials, among other things, machining a stainless steel for plastic molds. The cutting data were as follows: vc = 325 m / min n = 1653 rpm 20 ap = 3 mm ae = 32 mm fz = 0.30 mm / z Vf = 496 mm / mln κ = 45 ° 25 D = 52 Z = 1
    As mentioned, a variety of coatings have been tested. FIGS. 4a and 5a show photographs of the best cutting insert with a PVD-method ·······························································································. AITiN coating layer is displayed after a usage time of 28 minutes. As can be clearly seen from the outbreaks on the free surface (FIG. 4 a) and the rake surface (FIG. 5 a), a service life end is given after this time. By contrast, in the case of analogue cutting inserts which were coated with the layer sequence indicated above by means of a CVD method, only minimal wear is detectable after the same time, both at the free surface (FIG. 4b) and at the rake surface (FIG. Fig. 5b). An end of the service life or significant signs of wear could only be determined after 49 minutes, which corresponds to a service life extension of 75%. 10
    In further experiments, increases in the service life of cast iron materials with tensile strengths of more than 1000 N / mm 2 of up to 200% could be determined in comparison with coatings based on the outermost ΑΓΠΝ coating layers produced with a PVD process.
    权利要求:
    Claims (30)
    [1]
    tt ♦♦ »· · * · ·······························································································. 1. A process for producing a coated body (1), wherein the body (1) is provided and a multi-layer coating is deposited on the body (1) at least one coating layer (2) with AlxTii.xN, characterized in that the coating layer (2) with ΑΙχΤπ, χΝ on a TiCN coating layer (3) is deposited with elongated crystals of TiCN, in the titanium optionally up to 40 mol % may be replaced by aluminum.
    [2]
    2. The method according to claim 1, characterized in that the TiCN coating layer (3) is deposited at a temperature of 800 ° C to 880 ° C.
    [3]
    3. The method according to claim 1 or 2, characterized in that the TiCN coating layer (3) having a thickness of up to 7 pm, preferably 2 to 5 pm, 15 is deposited.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the TiCN coating layer (3) from a gas containing or consisting of nitrogen, hydrogen, acetonitrile and titanium tetrachloride is deposited. 20
    [5]
    5. The method according to claim 4, characterized in that the gas is used with nitrogen and hydrogen as the carrier gas.
    [6]
    6. The method according to claim 4 or 5, characterized in that the gas is used with a higher nitrogen content than hydrogen content.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the coating layer (2) with ΑΙχΤί ^ Ν at a temperature equal to or below a temperature of a deposition of the TiCN coating layer (3) is deposited. 30
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the Beschichtungsläge (2) with ΑΙχΤί ^ χΝ at a temperature of 800 ° C to 830 ° C is deposited. ·· »4 · ψ * ft * ·« 4 · «4 | 4 4 # 4 ft 4 4 4 4 44 44 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 *
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the coating layer (2) with ΑΙχΤϊ1χΝ from a first mixture of nitrogen, hydrogen and titanium tetrachloride and a second mixture of nitrogen and NH3 is deposited. 5
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the coating layer (2) with ΑΙχΤπ.χΝ at a pressure of 20 to 40 mbar is deposited.
    [11]
    11. The method according to any one of claims 1 to 10, characterized in that the coating layer (2) with AlxTii-xN with a thickness of 3 to 10 pm is deposited.
    [12]
    12. The method according to any one of claims 1 to 11, characterized in that a body (1) made of a hard metal is used, on which the multilayer coating 15 is deposited.
    [13]
    13. The method according to claim 12, characterized in that on the body (1) a bonding layer (4) is deposited, on which the TiCN coating layer (3) is deposited. 20
    [14]
    14. The method according to claim 13, characterized in that a bonding layer (4) of ΊΊΝ, preferably with a thickness of less than 1.0 pm, is deposited.
    [15]
    15. The method according to any one of claims 1 to 14, characterized in that at least one coating layer, preferably all, are deposited by means of a CVD method.
    [16]
    16. The method according to claim 15, characterized in that in the deposition 30 of the bonding layer (4) and subsequent deposition of each coating layer (2, 3) in each case a deposition temperature is lowered or held.
    [17]
    17. Coated body (1) with a multilayer coating which has at least one coating layer (2) with Al 2+ 3 .xN, characterized in that the layer (2) • * * * # * ^ * «* * 4 ** ··· *« ····· f «# ·· ··· * ···· ··· ·· 14 Coating layer (2) with AlxTii. xN is deposited on a TiCN TiCN coating layer (3) with elongated crystals of TiCN, wherein titanium may optionally be replaced by aluminum up to 40 mole%.
    [18]
    18. Coated body (1) according to claim 17, characterized in that the TiCN coating layer (3) has in cross-section elongated crystals, which preferably extend predominantly at an angle of ± 30 ° to a surface normal of the body (1).
    [19]
    19. Coated body (1) according to claim 17 or 18, characterized in that the TiCN coating layer (3) has an average composition TiCaNi ^ with a in the range of 0.3 to 0.8, in particular 0.4 to 0.6 , having.
    [20]
    20. Coated body (1) according to any one of claims 17 to 19, characterized in that the coating layer (2) with ΑΙχΤΐι.χΝ has an average composition A! XTii.xN, wherein x is 0.7 and hexagonal AIN in a proportion of more than 0 up to 30 mol% prevails.
    [21]
    21. Coated body {1) according to claim 20, characterized in that the coating layer (2) with AlxTh.xN is an outermost coating layer.
    [22]
    22. Coated body (1) according to claim 20 or 21, characterized in that the coating layer (2) with AlxTii.xN has a thickness of more than 4 to 10 pm. 25
    [23]
    23. A coated body (1) according to any one of claims 20 to 22, characterized in that x is £ 0.75, preferably x £ 0.80, in particular x δ 0.85.
    [24]
    24. Coated body (1) according to claim 23, characterized in that a proportion of hexagonal AIN more than 12.5 mol%, preferably more than 15.0 mol%, in particular more than 20.0 mol%, is φφ f * φφ * · · φφ • · # · · · · φ φ φ η • κ φ · · φφ »φ # *» ♦ * * * · »» · * * φφ φφ ···· φφ Φ ♦ · 15
    [25]
    25. Coated body (1) according to any one of claims 17 to 24, characterized in that a proportion of cubic AlxTii.xN phase in the coating layer (2) with Al / Ti ^ N at least 70 mol%, preferably 70 to 80 Mol%.
    [26]
    26. A coated body (1) according to any one of claims 17 to 25, characterized in that the coating layer (2) with AlxTii.xN wholly or at least partially having crystals with a lamellar structure.
    [27]
    27. Coated body (1) according to claim 26, characterized in that the lamellar structure of the crystals has lamellae with a thickness of less than 100 nm, preferably less than 50 nm, in particular less than 25 nm.
    [28]
    28. A coated body (1) according to any one of claims 17 to 27, characterized in that the body (1) is formed of a hard metal and on the body (1) 15 a bonding layer (4) of TiN, preferably with a thickness of less as 1.0 pm, is deposited.
    [29]
    29. Coated body (1) according to claim 28, characterized in that the TiCN coating layer (3) is deposited on the bonding layer (4). 20
    [30]
    30. Coated body (1) according to any one of claims 17 to 29, characterized in that all coating layers are deposited by means of CVD method.
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    EP2686462A1|2014-01-22|
    引用文献:
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    DE102007000512B3|2007-10-16|2009-01-29|Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.|Hard-coated body with a multi-layer system for tools and components such as drills, millers and indexable inserts, comprises a bonding layer applied on the body, a single- or multi-phase hard layer, and a phase gradient layer|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA384/2011A|AT510963B1|2011-03-18|2011-03-18|COATED BODY AND METHOD FOR THE PRODUCTION THEREOF|ATA384/2011A| AT510963B1|2011-03-18|2011-03-18|COATED BODY AND METHOD FOR THE PRODUCTION THEREOF|
    EP12715313.8A| EP2686462B1|2011-03-18|2012-03-15|Coated body and method for the production thereof|
    CN201280013811.4A| CN103429785B|2011-03-18|2012-03-15|The object that tegmentum covers and manufacture method thereof|
    PCT/AT2012/050035| WO2012126030A1|2011-03-18|2012-03-15|Coated body and method for the production thereof|
    PL12715313T| PL2686462T3|2011-03-18|2012-03-15|Coated body and method for the production thereof|
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