摘要
利用激光熔覆技术,在钛合金基体表面制备Ni/Ti涂层和Ni/Ti-Al_2O_3涂层,用显微硬度计和多功能摩擦磨损试验机分别对涂层的显微硬度分布情况和涂层的摩擦磨损性能进行了测试。结果表明,Ni/Ti涂层、Ni/Ti-10%Al_2O_3涂层和Ni/Ti-20%Al_2O_3涂层硬度平均值达到720、760HV0.1和800HV0.1,使基体硬度提高了一倍多。涂层的摩擦磨损试验表明,摩擦过程中存在跑合期、平缓增长期、快速增长期和平稳期四个阶段,涂层的磨损量要低于基体的磨损量,而摩擦系数要高于基体的摩擦系数。
Ni/Ti coating and Ni/Ti-Al2O3 coating were prepared on the surface of titanium alloy substrate by laser cladding technology.Microhardness distribution and wear resistance of the coating were tested by micro hardness tester and multi function friction and wear testing machine.The microhardness of coating were reached 720 HV0.1,760 HV0.1 and 800 HV0.1,respectively,which was one times higher than that of the substrate.Friction and wear curves have four stages including running-in period moderate growth,low,rapid growth and stable period.The wear loss of their coatings were less than that of the substrate.However their friction coefficient were higher.
作者
李帅
董丰波
刁磊
陈永香
申倜
梁本运
魏彬
李崇桂
Li Shuai Dong Fengbo Diao Lei Chen Yongxiang Shen Ti Liang Benyun Wei Bin Li Chonggui(School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China Shanghai Aerospace Equipments Manufacturer, Shanghai 200240, China Shanghai Academy of Spaceflight Technology, Shanghai 201109, China)
出处
《应用激光》
CSCD
北大核心
2017年第3期309-313,共5页
Applied Laser
基金
国家自然科学基金资助项目(项目编号:51402189)
上海工程技术大学重点科研平台大学生创新训练资助项目(项目编号:cz1505002)
上海工程技术大学研究生创新资助项目(项目编号:16KY0503)
上海市"创新行动计划"部分地方院校能力建设专项计划资助项目(项目编号:16030501100)
