摘要
本论文系统研究了仿木年轮Si_(3)N_(4)/Ni复合材料在海水中的摩擦磨损性能.在本研究中,利用热压烧结工艺制备仿木年轮的Si_(3)N_(4)/Ni复合材料,采用端面磨损试验机研究Si_(3)N_(4)/Ni复合材料与316不锈钢配副在人工海水环境中的摩擦磨损性能,利用扫描电子显微镜(SEM)观察与分析摩擦副表面的磨损形貌,采用EDS能谱仪和拉曼光谱来定性分析磨损面的表面元素与物质分布.结果表明,随着滑动速度增大,纯氮化硅和Si_(3)N_(4)/Ni复合材料与316不锈钢配副的摩擦系数均有所增大,在相同速度下,Si_(3)N_(4)/Ni复合材料与316配副表现出较好的摩擦磨损性能.当滑动速度为100 r/min时,Si_(3)N_(4)/Ni-316摩擦副表现出最优的摩擦学性能,摩擦系数为0.45,复合材料销磨损率为1.503×10^(-6)mm^(3)/Nm,金属盘磨损率为1.03×10^(-4)mm^(3)/Nm.Si_(3)N_(4)/Ni复合材料表现出相对较好的摩擦学性能,这主要归因于在复合材料摩擦表面发生了摩擦化学反应,生成硅胶(SiO_(2))和Ni_(2)SiO_(4)等物质,起到了减摩与润滑作用.
In order to explore the tribological properties of Si_(3)N_(4)/Ni in seawater,the Si_(3)N_(4)/Ni composites with wood-like growth rings were prepared by hot pressing sintering,and the tribological properties of Si_(3)N_(4)/Ni composite materials against 316 stainless steel were studied by wear testing machine in artificial seawater environment.The results showed that,the friction coefficients of single-phase silicon nitride and Si_(3)N_(4)/Ni composite against 316 steel increased with the increase of sliding speed,while the friction coefficients of Si_(3)N_(4)/Ni composite against 316 steel were lower at the same speed.At the speed of 100 r/min,Si_(3)N_(4)/Ni-316 pair presented the better tribological properties than single-phase silicon nitride,namely,a friction coefficient of 0.45,a composite pin wear rate of 1.503×10^(-6)mm^(3)/Nm,and a metal disk wear rate of 1.03×10^(-4)mm^(3)/Nm.The better tribological properties were attributed to the formation of the tribochemical products such as silica gel(SiO_(2))and Ni_(2)SiO_(4),which played a role in reducing friction and lubrication.
作者
陈威
王朝
周奥
李耶童
赵文卓
张建军
杨勇强
CHEN Wei;WANG Chao;ZHOU Ao;LI Ye-tong;ZHAO Wen-zhuo;ZHANG Jian-jun;YANG Yong-qiang(College of Mechanical and Electrical Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China;Shaanxi Research Institute of Agricultural Products Processing Technology,Xi′an 710021,China;School of Materials Science and Engineering,Xihua University,Chengdu 610039,China)
出处
《陕西科技大学学报》
北大核心
2026年第1期152-160,共9页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(22378252)
陕西省咸阳市重点研发计划项目(L2024-ZDYF-GY-0044)
西华大学材料与表面技术教育部重点实验室开放基金项目(2024-yb007)。
