钛铝基多元合金氮化层的耐磨性能研究  

Study on wear resistance of nitriding coatings of Ti-Al base multielement alloys

作　　者：张倩 马兰 杨绍利 朱奎松 Zhang Qian;Ma Lan;Yang Shaoli;Zhu Kuisong(College of Materials and Chemistry&Chemical Engineering,Chengdu University of Technology,Chengdu 610059,Sichuan,China;Key Laboratory of Comprehensive Utilization of Vanadium and Titanium Resources in Sichuan,Panzhihua617000,Sichuan,China;CollegeofVanadiumandTitanium,PanzhihuaUniversity,Panzhihua617000,Sichuan,China)

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059 [2]钒钛资源综合利用四川省重点实验室,四川攀枝花617000 [3]攀枝花学院钒钛学院,四川攀枝花617000

出　　处：《钢铁钒钛》2023年第5期84-92,共9页Iron Steel Vanadium Titanium

基　　金：攀枝花市重点科技计划项目(2021CY-G-14)。

摘　　要：以攀枝花酸溶性钛渣、铝粉、氧化钙为原料制备钛铝基多元合金,并将钛铝基多元合金在不同温度不同时间条件下直接氮化处理,得到氮化层。采用扫描电镜、X射线衍射仪、显微硬度计、摩擦磨损试验机、三维形貌仪等对制得的氮化层的性能进行检测分析。结果表明,在不同条件下对钛铝基多元合金进行直接氮化,均能提高合金的表面硬度及耐磨性。氮化温度对合金硬度及耐磨性能的影响较大,氮化时间为2 h时,适宜的氮化温度为800℃,此时氮化层的平均硬度(HV)高达698.8,平均摩擦系数为0.120,往复摩擦的磨损率为19.44 mm^(3)/(N·m),表面粗糙度为0.731μm;氮化温度为900℃时,适宜的氮化时间为3 h,此时得到的氮化层硬度(HV)为682.6,平均摩擦系数为0.059,往复摩擦的磨损率为9.48 mm^(3)/(N·m),表面粗糙度为0.601μm。In this paper,the titanium-aluminum-based multi-component alloy was prepared from Panzhihua acid-soluble titanium slag,aluminum powder and calcium oxide.After directly nitriding treatment at different temperatures and different time,a nitrided layer was obtained.Scanning electron microscopy,X-ray diffractometer,microhardness tester,friction and wear testing machine,and three-dimensional topography instrument were used to detect and analyze the properties of the nitriding layer.The results show that the surface hardness and wear resistance of Ti-Al based multielement alloy can be improved by direct nitriding under different conditions.The nitriding temperature has a great effect on the hardness and wear resistance of the alloy.When the nitriding time is 2 h,the optimum nitriding temperature is 800℃,the average hardness(HV)of the nitriding layer is up to 698.8,the average friction coefficient is 0.120,the reciprocating friction wear rate is 19.44 mm^(3)/(N·m),and the surface roughness is 0.731μm.When the nitriding temperature is 900℃and the optimum nitriding time is 3 h,the hardness(HV)of nitriding layer is 682.6,the average friction coefficient is 0.059,the reciprocating friction wear rate is 9.48 mm^(3)/(N·m),and the surface roughness is 0.601μm.

关 键 词：钛铝基多元合金 直接氮化 氮化层 耐磨性 

分 类 号：TF823[冶金工程—有色金属冶金]