工程科学学报，第37卷，第12期：1624-1629,2015年12月 Chinese Journal of Engineering,Vol.37,No.12:1624-1629,December 2015 D0l:10.13374/j.issn2095-9389.2015.12.014:http://journals..ustb.edu.cn AlTiCrN涂层结合界面组织特征与结合性能 孔德军2)四，付贵忠”，王文昌》，郭皓元” 1)常州大学机械工程学院，常州2131642)常州大学江苏省材料表面科学与技术重点实验室，常州213164 3)常州大学石油化工学院，常州213164 ☒通信作者，E-mail:kong-dejun(@163.com 摘要以Ti、Al和Cr为靶材，采用阴极离子镀在YTI4硬质合金刀具表面制备一层AITiCrN涂层，通过扫描电镜、能谱仪和 X射线衍射仪分析了其表面和界面形貌、化学元素组成和物相，并用线扫描和面扫描研究了涂层中化学元素在结合界面处扩 散机理.用划痕法表征其界面层结合强度，对界面结合机理进行了讨论.AlTiCrN涂层的物相主要以AIN、CN和TiN为主，涂 层在(111)晶面具有很强的择优取向.涂层中A、Ti、C和N原子数分数高于基体，在结合界面处呈阶梯状过渡分布，基体中 C原子扩散进入TN、AN和CN晶格点阵中，形成明显的扩散层.涂层结合界面为机械+扩散形式，其结合方式主要是由吸 附结合、扩散结合和化合结合方式组成.划痕过程中涂层经历弹性变形、塑性变形和涂层剥离三个阶段，界面结合强度为 59.2N. 关键词硬质合金：涂层：离子镀：界面组织：结合性能 分类号TG711 Interfacial structural characteristics and bonding performance of AlTiCrN coatings KONG De-jun),FU Gui-zhong",WANG Wen-chang,GUO Hao-yuan 1)College of Mechanical Engineering,Changzhou University,Changzhou 213164,China 2)Jiangsu Key Laboratory of Materials Surface Science and Technology,Changzhou University,Changzhou 213164,China 3)School of Petrochemical Engineering,Changhou University,Changzhou 213164,China Corresponding author,E-mail:kong-dejun@163.com ABSTRACT A layer of AlTiCrN coating was prepared on the YT14 hard alloy cutter surface by cathodic are ion plating (CAIP)with Ti,Al and Cr targets.The morphologies,chemical elements and phases of the coating surface and interface were observed by means of scanning electron microscopy (SEM),energy dispersive spectrometer (EDS)and X-ray diffraction (XRD),respectively.The diffu- sion mechanism of chemical elements at the interface was analyzed by line scan and plane scan.The bonding strength of the interface was characterized by scratch test,and the binding mechanism was discussed.The results show that phases in the coating mainly are composed of AIN,CrN and TiN,and the crystal plane of (111)has a strong preferred orientation.The concentrations of Al,Ti,Cr and N in the coating are higher than those in the substrate,showing a step-like distribution at the interface.C atoms in the substrate diffuse into the TiN,AlN and CrN lattices to form an obvious diffusion layer.The interface is a mechanical and diffusion form,mainly combined with adsorption bonding,diffusion bonding and chemical combination.The coating bears three stages in scratch process, i.e.,elastic deformation,plastic deformation and coating stripping,and the interface bonding strength is 59.2N. KEY WORDS cemented carbides;coatings:ion plating;interfacial structures:bonding properties 硬质合金刀具是由WC、TC、NbC等碳化物以Co、Ni、Ti和Al作为黏结剂通过烧结而成0，具有较高的 收稿日期：2014-09-02 基金项目：江苏省科技支撑计划（工业）资助项目(BE2014818)工程科学学报，第 37 卷，第 12 期: 1624--1629，2015 年 12 月 Chinese Journal of Engineering，Vol． 37，No． 12: 1624--1629，December 2015 DOI: 10． 13374 /j． issn2095--9389． 2015． 12． 014; http: / /journals． ustb． edu． cn AlTiCrN 涂层结合界面组织特征与结合性能 孔德军1，2) ，付贵忠1) ，王文昌3) ，郭皓元1) 1) 常州大学机械工程学院，常州 213164 2) 常州大学江苏省材料表面科学与技术重点实验室，常州 213164 3) 常州大学石油化工学院，常州 213164  通信作者，E-mail: kong-dejun@ 163． com 摘 要 以 Ti、Al 和 Cr 为靶材，采用阴极离子镀在 YT14 硬质合金刀具表面制备一层 AlTiCrN 涂层，通过扫描电镜、能谱仪和 X 射线衍射仪分析了其表面和界面形貌、化学元素组成和物相，并用线扫描和面扫描研究了涂层中化学元素在结合界面处扩 散机理． 用划痕法表征其界面层结合强度，对界面结合机理进行了讨论． AlTiCrN 涂层的物相主要以 AlN、CrN 和 TiN 为主，涂 层在( 111) 晶面具有很强的择优取向． 涂层中 Al、Ti、Cr 和 N 原子数分数高于基体，在结合界面处呈阶梯状过渡分布，基体中 C 原子扩散进入 TiN、AlN 和 CrN 晶格点阵中，形成明显的扩散层． 涂层结合界面为机械 + 扩散形式，其结合方式主要是由吸 附结合、扩散结合和化合结合方式组成． 划痕过程中涂层经历弹性变形、塑性变形和涂层剥离三个阶段，界面结合强度为 59. 2 N． 关键词 硬质合金; 涂层; 离子镀; 界面组织; 结合性能 分类号 TG711 Interfacial structural characteristics and bonding performance of AlTiCrN coatings KONG De-jun1，2)  ，FU Gui-zhong1) ，WANG Wen-chang3) ，GUO Hao-yuan1) 1) College of Mechanical Engineering，Changzhou University，Changzhou 213164，China 2) Jiangsu Key Laboratory of Materials Surface Science and Technology，Changzhou University，Changzhou 213164，China 3) School of Petrochemical Engineering，Changzhou University，Changzhou 213164，China  Corresponding author，E-mail: kong-dejun@ 163． com ABSTＲACT A layer of AlTiCrN coating was prepared on the YT14 hard alloy cutter surface by cathodic arc ion plating ( CAIP) with Ti，Al and Cr targets． The morphologies，chemical elements and phases of the coating surface and interface were observed by means of scanning electron microscopy ( SEM) ，energy dispersive spectrometer ( EDS) and X-ray diffraction ( XＲD) ，respectively． The diffu￾sion mechanism of chemical elements at the interface was analyzed by line scan and plane scan． The bonding strength of the interface was characterized by scratch test，and the binding mechanism was discussed． The results show that phases in the coating mainly are composed of AlN，CrN and TiN，and the crystal plane of ( 111) has a strong preferred orientation． The concentrations of Al，Ti，Cr and N in the coating are higher than those in the substrate，showing a step-like distribution at the interface． C atoms in the substrate diffuse into the TiN，AlN and CrN lattices to form an obvious diffusion layer． The interface is a mechanical and diffusion form，mainly combined with adsorption bonding，diffusion bonding and chemical combination． The coating bears three stages in scratch process， i． e． ，elastic deformation，plastic deformation and coating stripping，and the interface bonding strength is 59. 2 N． KEY WOＲDS cemented carbides; coatings; ion plating; interfacial structures; bonding properties 收稿日期: 2014--09--02 基金项目: 江苏省科技支撑计划( 工业) 资助项目( BE2014818) 硬质合金刀具是由 WC、TiC、NbC 等碳化物以 Co、 Ni、Ti 和 Al 作为黏结剂通过烧结而成［1］，具有较高的