WO2015105274A1 - Revêtement dur pour outil de coupe - Google Patents

Revêtement dur pour outil de coupe Download PDF

Info

Publication number
WO2015105274A1
WO2015105274A1 PCT/KR2014/011415 KR2014011415W WO2015105274A1 WO 2015105274 A1 WO2015105274 A1 WO 2015105274A1 KR 2014011415 W KR2014011415 W KR 2014011415W WO 2015105274 A1 WO2015105274 A1 WO 2015105274A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
ticn
tic
hard coating
cutting tool
Prior art date
Application number
PCT/KR2014/011415
Other languages
English (en)
Korean (ko)
Inventor
이동열
안진우
김경일
염진희
조성훈
안선용
이성구
Original Assignee
한국야금 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국야금 주식회사 filed Critical 한국야금 주식회사
Publication of WO2015105274A1 publication Critical patent/WO2015105274A1/fr

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/044—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material coatings specially adapted for cutting tools or wear applications
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • C23C28/042—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/40—Coatings including alternating layers following a pattern, a periodic or defined repetition
    • C23C28/42—Coatings including alternating layers following a pattern, a periodic or defined repetition characterized by the composition of the alternating layers

Definitions

  • the present invention relates to a hard film for cutting tools formed on a cutting tool based on a cemented carbide or cermet, more specifically, an MT-TiCN layer, a bonding layer, and alumina (Al 2 O 3 ) on the base material.
  • This is a hard film laminated in the order of) layer, by controlling the bonding relationship between the grain boundaries of the grains forming the MT-TiCN layer by improving the adhesion to the alumina (Al 2 O 3 ) layer located on the MT-TiCN layer.
  • the present invention relates to a hard coating which can reduce the peeling of the edge portion of the hard coating during cutting, thereby extending the life of the cutting tool.
  • the TiCN thin film which has been widely used in hard coatings for cutting tools based on cemented carbide or cermet, is formed by reacting at a high temperature of about 1000 ° C. using reaction gases such as TiCl 4 , CH 4 and N 2 . Carbon (C) diffuses from the cemented carbide base material into the TiCN thin film, and a brittle hard phase such as Co 3 W 3 C or Co 6 W 6 C is formed at the interface between the base material and the TiCN thin film, thereby reducing the toughness of the cutting tool. .
  • reaction gases such as TiCl 4 , CH 4 and N 2 .
  • Carbon (C) diffuses from the cemented carbide base material into the TiCN thin film, and a brittle hard phase such as Co 3 W 3 C or Co 6 W 6 C is formed at the interface between the base material and the TiCN thin film, thereby reducing the toughness of the cutting tool. .
  • a method of forming a TiCN layer (hereinafter referred to as an 'MT-TiCN layer') using MTCVD (hereinafter referred to as 'MTCVD') has been proposed.
  • Diffusion of carbon from the cemented carbide substrate when the TiCN thin film is formed by lowering the deposition temperature to about 750-850 ° C. using CH 3 CN as a source of TiCl 4 , carbon (C) and nitrogen (N).
  • the TiCN thin film formed after coating is characterized by having not only wear resistance but also toughness.
  • the MT-TiCN layer is commercially available in a multi-layered structure in which an oxide such as an alumina layer is formed after forming a bonding layer thereon, and is widely used in cutting tools for turning and milling.
  • US Patent No. 6,652,913 discloses a crystal grain size (particle size) of a TiCN thin film having a columnar crystal structure by doping CO gas during MTCVD TiCN thin film formation. ) Is proposed to refine the hardness to about 0.5 ⁇ m level to improve hardness.
  • the method improves the mechanical properties due to the miniaturization of the TiCN layer, but improve the wear resistance of the cutting tool, of the bonding force between the top layer of alumina (Al 2 O 3) and MT-TiCN layer away, cutting the alumina layer
  • the tool life is reduced due to partial peeling, and there is a certain limit to improving the tool life only by atomizing the MT-TiCN layer.
  • An object of the present invention in forming the MT-TiCN layer by forming a fine MT-TiCN layer to improve the mechanical properties of the MT-TiCN layer and at the same time to control the binding relationship of the grain boundary constituting the MT-TiCN layer, MT- It is to provide a hard film for cutting tools that can improve the bonding strength with the ⁇ -Al 2 O 3 layer, which is the upper layer of the TiCN layer, and improve the life of the cutting tool.
  • hard coatings for cutting tools which occupy 70% or more of the sum of ⁇ 9 type, ⁇ 11 type, ⁇ 15 type, and ⁇ 23 type grain boundary lengths.
  • x + y + z 1, x ⁇ 0, y ⁇ 0, z> 0) layers, and an ⁇ -Al 2 O 3 layer formed thereon.
  • the ⁇ -Al 2 O 3 layer may have a thickness of about 1 ⁇ m to about 15 ⁇ m.
  • the grain boundaries of the particulate MT-TiCN layer constituting the hard coating according to the present invention are controlled so that ⁇ 3 type is the main, and the grain-bound MT-TiCN layer with the grain boundaries controlled as described above not only improves mechanical properties due to grain refinement, The bonding force with the ⁇ -Al 2 O 3 layer formed thereon is improved, and the life of the cutting tool can be extended.
  • 3 is a photograph after evaluation of cutting performance of the insert with the hard film according to the embodiment.
  • the “carbide alloy” means a sintered body sintered including a WC powder and a binding metal powder such as Co and Ni, and may include other components other than the above components.
  • Ceramic means a sintered body sintered including TiCN powder and a binding metal powder such as Co, Ni, and other components other than the above components may also be included.
  • 'MT-TiCN layer' is a TiCN layer formed by using MTCVD (Moderate Temperature Chemical Vapor Deposition). When TiCN layer is formed, it is deposited temperature using CH 3 CN as a source of TiCl 4 , carbon (C) and nitrogen (N). It refers to a thin film formed by lowering to about 750 ⁇ 850 °C level.
  • MTCVD Mode Temperature Chemical Vapor Deposition
  • grain boundary' means that each of the constituent atoms consisting of Ti, C, and N at the grain boundary is determined by EBSD analysis.
  • lattice points consisting of Ti, C, and N at the grain boundary.
  • lattice points that do not share constituent atoms between the constituent atom shared lattice points as shown in FIG. 1. It means a grain boundary having the form of n constituent atomic covalent lattice points.
  • the present inventors have studied to improve the mechanical properties of the MT-TiCN layer and at the same time improve the bonding strength with the ⁇ -Al 2 O 3 layer formed on the top, applying the conventional atomization technology of the MT-TiCN layer and At the same time, when the ⁇ 3 type of grain boundary is adjusted to 70% or more of the total grain boundary, the bonding strength between the fine MT-TiCN layer and the ⁇ -Al 2 O 3 layer formed on the upper side is improved, which can extend the life of the cutting tool even more. It has been found that the present invention can be achieved.
  • the wear resistance is lowered.
  • the thickness 1-20 micrometers is preferable.
  • the thickness of the ⁇ -Al 2 O 3 layer is less than 1 ⁇ m, the wear resistance is not sufficient, and when the thickness of the ⁇ -Al 2 O 3 layer is less than 15 ⁇ m, peeling easily occurs, 1 to 15 ⁇ m is preferable.
  • the hard coating according to the present invention may be applied to a base material made of a cemented carbide, cermet, or ceramic.
  • a base material made of a cemented carbide, cermet, or ceramic In an embodiment of the present invention, an insert made of cemented carbide is used.
  • fine MT-TiCN consisting of columnar crystals is deposited on the TiN layer.
  • Conditions for forming the particulate columnar MT-TiCN layer include 0-10vol% N 2 , 7-10vol% TiCl 4 , 1-3vol% CH 3 CN, 1-3vol% HCl, 1-3vol% BCl 3 , Reaction gas consisting of the remaining H 2 was deposited at a temperature of 830 ⁇ 900 °C at a pressure of 70 mbar to form an MT-TiCN layer of about 7 ⁇ m thickness.
  • the bonding layer is composed of 75vol% H 2 , 19vol% N 2 , 3.0vol% CH 4 , 2.0vol% CO, 1.5vol% TiCl 4 Using the reaction gas at about 1000 °C deposition pressure is formed under the conditions of 100 ⁇ 150mbar, as a result of forming a TiCNO layer of about 0.5 ⁇ m thickness.
  • the deposition temperature is 1000 ⁇ 1010 °C
  • deposition pressure 50 ⁇ 75mbar process conditions about 78vol% H 2 , 3.5vol% CO 2 , 0.3vol% H 2 S
  • a reaction layer consisting of 3 to 5 vol% HCl and 2.5 vol% AlCl 3 was introduced to form an alumina layer having a columnar structure and an alpha phase with a thickness of 4 ⁇ m.
  • the hard coating according to the comparative example was prepared in the same manner as in Example, except for the composition and process conditions of MT-TiCN.
  • the formation of MT-TiCN used a method of forming a general MT-TiCN layer. Specifically, the reaction gas consisting of 10 ⁇ 40vol% N 2 , 5 ⁇ 7vol% TiCl 4 , 1 ⁇ 3vol% CH 3 CN, the remaining H 2 at a pressure of 100mbar at this time deposition temperature is 850 ⁇ 900 °C thickness 7 A ⁇ m MT-TiCN layer was formed.
  • Table 1 Psalter Percentage of the length of the ⁇ 3 type grain boundary in the sum of the lengths of ⁇ 3, ⁇ 5, ⁇ 7, ⁇ 9, ⁇ 11, ⁇ 15, and ⁇ 23 type grain boundaries.
  • the ratio of the grain size of the ⁇ 3 type grain boundary occupies more than 70%
  • the comparative example In the MT-TiCN layer of the hard coating the ratio of the grain length of the ⁇ 3 type grains to the total sum was less than 50%.
  • the MT-TiCN layer according to the embodiment of the present invention can improve the bonding strength with the ⁇ -Al 2 O 3 layer formed on the upper side, by the improved bonding strength, the hard film according to the present invention is conventional The life of the cutting tool can be extended compared to the film.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Vapour Deposition (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

La présente invention se rapporte à un revêtement dur dans lequel une couche de MT-TiCN, une couche de liaison et une couche d'alumine (Al2O3) sont stratifiées séquentiellement sur un matériau de base, le revêtement dur permettant d'améliorer les propriétés mécaniques de la couche de MT-TiCN et d'accroître l'adhérence avec la couche d'alumine (Al2O3) disposée au-dessus de la couche de MT-TiCN et donc, le revêtement dur formé sur une surface de l'outil de coupe permettant d'augmenter la durée de vie de l'outil de coupe et de réduire le décollement des couches d'une partie de bord de l'outil de coupe. Le revêtement dur selon la présente invention est formé sur un matériau de base constitué de carbure métallique ou de cermet et a une structure multicouche comprenant une couche de TiCxNy (x+y=1, x＞0, y＞0) ayant une épaisseur de 1 à 20 μm, dans la couche de TiCxNy (x+y=1, x＞0, y＞0) mesurée par diffraction des électrons rétrodiffusés (EBSD), la longueur de joints de grains Σ3 représentant 70 % ou plus d'une somme des longueurs de joints de grains Σ3, Σ5, Σ7, Σ9, Σ11, Σ15 et Σ23.
PCT/KR2014/011415 2014-01-10 2014-11-26 Revêtement dur pour outil de coupe WO2015105274A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2014-0003380 2014-01-10
KR1020140003380A KR20150083621A (ko) 2014-01-10 2014-01-10 절삭공구용 경질 피막

Publications (1)

Publication Number Publication Date
WO2015105274A1 true WO2015105274A1 (fr) 2015-07-16

Family

ID=53524074

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2014/011415 WO2015105274A1 (fr) 2014-01-10 2014-11-26 Revêtement dur pour outil de coupe

Country Status (2)

Country Link
KR (1) KR20150083621A (fr)
WO (1) WO2015105274A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107358005A (zh) * 2017-07-24 2017-11-17 哈尔滨工业大学 基于真实微观组织结构sem‑ebsd图像的有限元模型建模方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101804472B1 (ko) * 2016-08-29 2017-12-04 한국야금 주식회사 경질피막이 형성된 절삭공구
KR102425215B1 (ko) * 2022-03-08 2022-07-27 주식회사 와이지-원 피복 절삭공구 및 그 코팅층 형성방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070085526A (ko) * 2004-12-14 2007-08-27 스미또모 덴꼬오 하드메탈 가부시끼가이샤 표면 피복 절삭 공구
KR20100014705A (ko) * 2007-04-01 2010-02-10 이스카 엘티디. 세라믹 코팅된 절삭 인서트
KR20120053171A (ko) * 2010-11-17 2012-05-25 한국야금 주식회사 절삭공구 공구용 피막
KR20120120709A (ko) * 2011-04-25 2012-11-02 한국야금 주식회사 절삭공구용 코팅층
KR20120134669A (ko) * 2011-06-03 2012-12-12 한국야금 주식회사 절삭공구용 코팅층

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070085526A (ko) * 2004-12-14 2007-08-27 스미또모 덴꼬오 하드메탈 가부시끼가이샤 표면 피복 절삭 공구
KR20100014705A (ko) * 2007-04-01 2010-02-10 이스카 엘티디. 세라믹 코팅된 절삭 인서트
KR20120053171A (ko) * 2010-11-17 2012-05-25 한국야금 주식회사 절삭공구 공구용 피막
KR20120120709A (ko) * 2011-04-25 2012-11-02 한국야금 주식회사 절삭공구용 코팅층
KR20120134669A (ko) * 2011-06-03 2012-12-12 한국야금 주식회사 절삭공구용 코팅층

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107358005A (zh) * 2017-07-24 2017-11-17 哈尔滨工业大学 基于真实微观组织结构sem‑ebsd图像的有限元模型建模方法

Also Published As

Publication number Publication date
KR20150083621A (ko) 2015-07-20

Similar Documents

Publication Publication Date Title
KR102478912B1 (ko) Cvd 코팅된 절삭 공구
EP1980649B2 (fr) Insert de découpe doté d'un revêtement en céramique
EP2570511B1 (fr) Outil de découpe revêtu d'alpha-alumine synthétique à joint de grain
EP1717348B1 (fr) Plaquette de coupe pour outil de coupe revetu
IL168768A (en) Coated cemented carbide cutting tool insert
BRPI0816574B1 (pt) corpos revestidos de material duro e processo de fabricação dos mesmos
JPS626748B2 (fr)
KR20070029589A (ko) Ｐｖｄ 코팅된 절삭 공구
EP2752263B1 (fr) Outil de découpe
KR20100135641A (ko) 절삭공구 또는 내마모성 공구용 표면 피복 박막
KR101737709B1 (ko) 절삭공구용 경질피막
WO2015105274A1 (fr) Revêtement dur pour outil de coupe
WO2018016732A1 (fr) Film de revêtement dur pour outil de coupe
KR20160080609A (ko) 절삭공구용 경질피막
WO2016108421A1 (fr) Carbure cémenté ayant une ténacité améliorée
KR101179255B1 (ko) 절삭공구 공구용 피막
CN110678579A (zh) 涂层切削工具
JP6677876B2 (ja) 耐溶着チッピング性と耐剥離性にすぐれた表面被覆切削工具
WO2016104943A1 (fr) Outil de coupe
KR101528790B1 (ko) 경질피막이 코팅된 절삭공구
KR101560507B1 (ko) 절삭공구용 피막
JP2000218407A (ja) 硬質皮膜被覆工具
JP2002233902A (ja) 被覆切削工具
JP2556089B2 (ja) 高速切削用表面被覆超硬合金製切削工具
KR20190074432A (ko) 초경합금 절삭공구

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14877637

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14877637

Country of ref document: EP

Kind code of ref document: A1