Ti靶电流对CrTiAlN涂层摩擦磨损性能的影响
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摘要
在不同Ti靶电流下,采用非平衡磁控溅射技术在SDC99冷作模具钢表面制备CrTiAlN涂层。采用X射线衍射仪、原位纳米力学测试系统和摩擦磨损试验机等测试分析了Ti靶电流对涂层的相结构、力学性能及摩擦磨损性能的影响。结果表明:随着Ti靶电流的增加,涂层的厚度及Ti含量呈非线性增加,涂层的纳米硬度与弹性模量分别增至26.08与302.86 GPa,Cr(Ti,Al) N涂层均为单相fcc结构;在Ti靶电流4 A下沉积的涂层的摩擦磨损性能最好,干摩擦因数和磨损率分别为不含Ti涂层的69.77%和65.31%;油磨26 h后磨损率为不含Ti涂层的25.67%,磨损机制为磨粒磨损与疲劳磨损的综合。
CrTiAlN coatings were deposited on SDC99 cold work die steel by using an unbalanced magnetron sputtering technique at different Ti target currents.The microstructure,mechanical as well as friction and wear properties of coatings were tested by means of X-ray diffractometer,nano indenter test system and friction wear testing machine and so on.The results showed that with the increase of Ti target current,both the thickness and Ti content of coatings increased nonlinearly,and the nano-hardness and elastic modulus of coatings increased to 26.08 GPa and 302.86 GPa,respectively,and that all of the CrTiAlN coatings were fcc single-phase structure.The coatings deposited at Ti target current of 4 A exhibited the best friction and wear property,its dry friction coefficient and wear rate were 69.77% and 65.31% of the coating without Ti,respectively;after the oil wear test for 26 h,its wear rate was 25.66% of the coating without Ti,and the wear mechanism was the combination of abrasive wear and fatigue wear.
CrTiAlN coatings were deposited on SDC99 cold work die steel by using an unbalanced magnetron sputtering technique at different Ti target currents.The microstructure,mechanical as well as friction and wear properties of coatings were tested by means of X-ray diffractometer,nano indenter test system and friction wear testing machine and so on.The results showed that with the increase of Ti target current,both the thickness and Ti content of coatings increased nonlinearly,and the nano-hardness and elastic modulus of coatings increased to 26.08 GPa and 302.86 GPa,respectively,and that all of the CrTiAlN coatings were fcc single-phase structure.The coatings deposited at Ti target current of 4 A exhibited the best friction and wear property,its dry friction coefficient and wear rate were 69.77% and 65.31% of the coating without Ti,respectively;after the oil wear test for 26 h,its wear rate was 25.66% of the coating without Ti,and the wear mechanism was the combination of abrasive wear and fatigue wear.
引文
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[2]林有希,高诚辉,唐旭晟.切削刀具PVD涂层技术的研究与发展[J].机电技术,2003(S1):88-92.
[3]DING X Z,ZENG X T.Structural,mechanical and tribological properties of CrAlN coatings deposited by reactive unbalanced magnetron sputtering[J].Surface&Coatings Technology,2005,2005(5/6):1372-1376.
[4]ENDRINO J L,PALACIN S,AGUIRRE M H,et al.Determination of the local environment of silicon and the microstructure of quaternary CrAl(Si)N films[J].Acta Materialia,2007,55(6):2129-2135.
[5]SANCHEZ-LOPEZ J C,CONTRERAS A,DOMINGUEZ-MEISTER S,et al.Tribological behaviour at high temperature of hard CrAlN coatings doped with Y or Zr[J].Thin Solid Films,2014,550(1):413-420.
[6]谢祖华,李云妹.PVD表面改性技术在模具上的应用[J].机电技术,2011,34(6):87-90.
[7]PODGRAJSEK M,GLODEZ S,REN Z.Failure analysis of forging die insert protected with diffusion layer and PVD coating[J].Surface&Coatings Technology,2015,276:521-528.
[8]NILSSON M,OLSSON M.Tribological testing of some potential PVD and CVD coatings for steel wire drawing dies[J].Wear,2011,273(1):55-59.
[9]BEAKE B D,NING L,GEY C,et al.Wear performance of different PVD coatings during hard wet end milling of H13 tool steel[J].Surface&Coatings Technology,2015,279:118-125.
[10]金英锡,吕晓东.针对汽车轻量化的高强度钢使用动向及机械特性[J].汽车工艺与材料,2015(10):49-57.
[11]李琦,阳林,贺绍华.面向汽车轻量化的先进高强度钢成型技术[J].客车技术与研究,2012(5):47-50.
[12]吕进,徐磊.高强度钢板在汽车冲压生产中的应用[J].模具技术,2015(2):52-56.
[13]钟茂莲.高强度汽车钢板冲压成形的主要问题及模具对策[J].精密成形工程,2014,6(3):20-24.
[14]朱雪飞,刘云超,施雯.SDC90钢CrTiAlN和Al Ti N涂层承载能力和耐磨性的研究[J].上海金属,2016,38(1):15-19.
[15]刘云超,罗艳艳,朱雪飞,等.光发射谱对CrTiAlN涂层性能的影响[J].中国有色金属学报,2017,27(4):760-765.
[16]谢尘,王明,李虎,等.深冷处理对冷作模具钢SDC99组织及性能的影响[J].材料热处理学报,2016,37(2):153-158.
[17]张驰.偏压、靶电流对多弧离子镀制备Ti N/Ti Al N复合膜组织形貌及性能的影响[D].沈阳:沈阳大学,2013.
[18]GILEWICZ A,CHMIELEWSKA P,MURZYNSKI D,et al.Corrosion resistance of CrN and CrCN/CrN coatings deposited using cathodic arc evaporation in Ringer's and Hank's solutions[J].Surface&Coatings Technology,2016,299:7-14.
[19]XU Y X,CHEN L,LIU Z Q,et al.Influence of Ti on the mechanical properties,thermal stability and oxidation resistance of Al-Cr-N coatings[J].Vacuum,2015,120:127-131.
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