Zr-Ti-B-N刀具涂层在600℃恒温过程的演变研究  

Research on Evolution Process of Zr-Ti-B-N Tool Coating at 600℃

作　　者：欧阳柳 刘艳梅[1] 许人仁 王重阳 范其香[1] 曹凤婷 王铁钢[1] Ouyang Liu;Liu Yanmei;Xu Renren;Wang Chongyang;Fan Qixiang;Cao Fengting;Wang Tiegang(Tianjin University of Technology and Education,Tianjin Key Laboratory of High Speed Cutting and Precision Machining,Tianjin 300222,China;不详)

机构地区：[1]天津职业技术师范大学,天津市高速切削与精密加工重点实验室,天津市300222

出　　处：《工具技术》2024年第4期31-36,共6页Tool Engineering

基　　金：天津市多元投入基金(22JCZDJC00670,22JCYBJC01600);天津市教委科研计划重点项目(2021ZD005,2022ZD020,2022ZD033)。

摘　　要：评估Zr-Ti-B-N刀具涂层在600℃下的耐热能力,研究不同热处理时间对涂层结构和性能的影响规律。采用高功率脉冲磁控溅射和脉冲直流磁控溅射复合技术制备Zr-Ti-B-N涂层,利用高温马弗炉对涂层进行热处理,借助纳米压痕仪、高温摩擦磨损试验机测试热处理后Zr-Ti-B-N涂层的力学性能、摩擦学性能。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对热处理前后Zr-Ti-B-N涂层的微观结构进行表征,在高温环境下,不同热处理时间对涂层的力学性能、摩擦学性能和微观结构有显著影响。结果证明,在600℃的大气环境下,经1h热处理后,涂层的综合性能稳定,涂层硬度为23.7GPa,临界载荷为31.7N;经2h热处理后,晶粒尺寸逐渐增大,柱状晶结构变得明显,涂层硬度开始下降;经3h热处理后,涂层表面出现明显的氧化膜,晶粒尺寸增大了27.0%,摩擦系数降到最低,为0.66,临界载荷未发生明显变化。In order to evaluate the heat resistance of Zr-Ti-B-N tool coating at 600℃,it is subjected to explore the effect of different heat treatment times on the structure and properties of the coating.In this work,Zr-Ti-B-N nanocomposite coatings are synthesized by high power impulse magnetron sputtering combined with pulsed DC magnetron sputtering,and heat treated by high temperature Muffle furnace.The tribometer and nanoindentation are used to research the mechanical and tribological properties of Zr-Ti-B-N coating after heat treatment.And XRD,SEM are used to characterize the microstructure of Zr-Ti-B-N coating with different circumstance.The result indicates that the mechanical properties,tribological properties and microstructure of the coating are significantly affected by different treatment times at high temperature.After heat treatment at 600°C for 1h,the comprehensive mechanical properties of the films has little variations,the hardness is 23.7GPa,and the adhesion is 31.7N.After heat treatment for 2h,the grain size gradually increases,the columnar crystal structure become sapparent,and the hardness of the coating begins to reduce.After heat treatment for 3h,obvious oxidation film appeares on the coating surface,the grain size of the coating increases by 27.0%,the coefficient of friction is reduced to a minimum of 0.66,and the adhesion varies little.

关 键 词：Zr-Ti-B-N涂层 耐热能力 力学性能 摩擦学性能 

分 类 号：TG711[金属学及工艺—刀具与模具] TG174.4[机械工程—机械制造及自动化] TH161