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

WANG Jiang, MA Yutian, CHENG Shaoyi, ZHANG Dong, MENG Junhu, XIN Benbin

doi:10.16577/j.issn.1001-1560.2024.0153

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

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

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

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

Cite this article

WANG Jiang, MA Yutian, CHENG Shaoyi, ZHANG Dong, MENG Junhu, XIN Benbin . Research on the Structural, Mechanical and Corrosion Tribological Properties of CoCrMo and CoCrMoW Alloys in Calf Serum Solution[J]. Materials Protection, 2024 , 57(7) : 73 -84 . DOI: 10.16577/j.issn.1001-1560.2024.0153

Options

Outlines

模态框（Modal）标题

Abstract

Cite this article