CoCrMo和CoCrMoW合金的组织结构、力学性能及在小牛血清溶液中的腐蚀摩擦学性能研究

王江, 马玉天, 程少逸, 张东, 孟军虎, 辛本斌

doi:10.16577/j.issn.1001-1560.2024.0153

材料保护 >

2024 , Vol. 57 >Issue 7: 73 - 84

DOI: https://doi.org/10.16577/j.issn.1001-1560.2024.0153

研究篇

CoCrMo和CoCrMoW合金的组织结构、力学性能及在小牛血清溶液中的腐蚀摩擦学性能研究

展开

(1. 金川集团股份有限公司镍钴共伴生资源开发与综合利用全国重点实验室, 甘肃金昌 737100;2. 中南大学材料科学与工程学院, 湖南长沙 410000;3. 中国科学院兰州化学物理研究所先进润滑与防护材料研究发展中心, 甘肃兰州 730000)

马玉天(1967－),博士,教授级高级工程师,研究方向为冶金工程,E-mail:mayutian＠jnmc.com；孟军虎(1975－),博士,研究员,研究方向为特殊工况下金属/陶瓷基润滑耐磨材料设计制备与应用,E-mail:jhmeng＠licp.cas.cn

收稿日期: 2023-10-16

修回日期: 2023-11-18

录用日期: 2023-11-25

网络出版日期: 2024-08-16

基金资助

工信部生物医用材料创新任务揭榜挂帅项目；第十九批次西部之光访问学者培养任务；甘肃省重点人才项目(2022RCXM006)；金川集团重点科研项目(2023-03)

收起

Research on the Structural, Mechanical and Corrosion Tribological Properties of CoCrMo and CoCrMoW Alloys in Calf Serum Solution

Expand

(1.National Key Laboratory for the Development and Comprehensive Utilization of Nickel Cobalt Co Associated Resources,Jinchuan Group Co., Ltd., Jinchang 737100, China；2.School of Materials Science and Engineering, Central South University, Changsha 410000, China；3.Research and Development Center for Advanced Lubrication and Protective Materials, Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences, Lanzhou 730000, China)

MA Yutian (1967－), Ph.D., Professorate Senior Engineer, Research Focus: Metallurgical Engineering,E-mail: mayutian＠jnmc.com；
MENG Junhu (1975－), Ph.D., Researcher, Research Focus: Design, Preparation and Application of Metal/Ceramic-Based Lubricating and Wear-Resistant Materials for Special Working Conditions,E-mail:jhmeng＠licp.cas.cn

Received date: 2023-10-16

Revised date: 2023-11-18

Accepted date: 2023-11-25

Online published: 2024-08-16

Supported by

Ministry of Industry and Information Technology Biomedical Materials Innovation Tasks Unveiled List of Heralded Projects；The 19th Batch of Western Light Visiting Scholar Training Tasks； Key Talent Projects in Gansu Province (2022RCXM006)；Key Scientific Research Project of Jinchuan Group (2023-03)

Fold

摘要

为了明确CoCrMo 和CoCrMoW 合金在小牛血清溶液中的腐蚀摩擦行为和耐腐蚀磨损机制，使用真空熔炼技术制备CoCrMo 和CoCrMoW 合金，采用SEM-EDS、TEM、XRD、压缩力学性能试验和腐蚀磨损试验研究2 种合金的组织结构、力学和腐蚀摩擦学性能。结果表明:2 种合金均由γ-Co 和ε-Co 组成，且微观组织以等轴晶为主。 CoCrMo 合金展现出优异的压缩力学性能，且其在小牛血清溶液中具有良好的耐腐蚀性，而CoCrMoW 合金出现点蚀。 2 种合金在小牛血清溶液中具有较好的腐蚀摩擦学性能，其摩擦系数和磨损率分别为0.11～0.21 和1.01×10－6 ～2.46×10－6 mm3/(N·m)。随着载荷和频率的增加，2 种合金的摩擦系数降低，实时摩擦系数稳定性提高。在低载荷条件下，合金的耐腐蚀磨损性能随频率的增大而增强，其磨损机制以磨粒磨损为主；在高载荷条件下，合金的磨损率随频率的增加而增大，磨粒磨损和腐蚀磨损并存。总体而言，CoCrMo 合金的耐腐蚀磨损性能优于CoCrMoW 合金，这主要是因为CoCrMo 合金具有较好的压缩力学性能和耐腐蚀性能。

关键词： CoCrMo 系合金; 微观组织; 力学性能; 腐蚀摩擦学性能; 腐蚀耐磨机制

本文引用格式

王江, 马玉天, 程少逸, 张东, 孟军虎, 辛本斌 . CoCrMo和CoCrMoW合金的组织结构、力学性能及在小牛血清溶液中的腐蚀摩擦学性能研究[J]. 材料保护, 2024 , 57(7) : 73 -84 . DOI: 10.16577/j.issn.1001-1560.2024.0153

Abstract

In order to clarify the corrosion friction behavior and corrosion wear resistance mechanism of CoCrMo and CoCrMoW alloys in calf serum solution, CoCrMo and CoCrMoW alloys were prepared using the vacuum melting technique, and the microstructure, mechanical and corrosion tribological properties of the two alloys were investigated by means of scanning electron microscopy(SEM),energy-dispersive spectroscopy(EDS) , transmission electron microscope(TEM), X-ray diffraction(XRD), compression mechanical performance experiments and corrosion wear tests.Results showed that the two alloys were composed of γ-Co and ε-Co, and the microstructure was dominated by equiaxial crystals.CoCrMo alloy exhibited excellent compressive mechanical properties and good corrosion resistance in calf serum solution,while pitting corrosion occurred in the CoCrMoW alloy.The two alloys showed good corrosion tribological properties in calf serum solution, with friction coefficients and wear rates of 0.11 ～0.21 and 1.01×10－6 ～2.46×10－6 mm3/(N·m), respectively.The friction coefficients of the two alloys decreased with the increase in load and frequency, and the stability of real-time friction coefficients increased.At low loads, the corrosive wear resistance of the alloys increased with frequency, and their wear mechanisms were dominated by abrasive wear.At high loads, the wear rate of the alloys increased with frequency,and abrasive wear and corrosive wear coexisted.Overall,the corrosion wear resistance of CoCrMo alloy was better than that of CoCrMoW alloy, which was mainly due to the better compressive mechanical properties and corrosion resistance of CoCrMo alloys.

Key words： CoCrMo series alloys; microstructure; mechanical properties; corrosion tribological properties; corrosion and wear resistance mechanism

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract