Tribological Performance and Anticorrosion Stability of Co-Cr-Mo Alloy with Thermal Oxidation Layer under Bovine Serum Albumin Solution
| Autor: | Meng Hua, Guangneng Dong, John K. L. Ho, Feifei Guo |
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| Rok vydání: | 2016 |
| Předmět: |
Thermal oxidation
Materials science Mechanical Engineering Metallurgy Alloy 02 engineering and technology Surfaces and Interfaces Tribology engineering.material 021001 nanoscience & nanotechnology Microstructure Surfaces Coatings and Films Corrosion 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Lubrication engineering Composite material 0210 nano-technology Layer (electronics) Tribometer |
| Zdroj: | Tribology Transactions. 59:1070-1080 |
| ISSN: | 1547-397X 1040-2004 |
| DOI: | 10.1080/10402004.2015.1134739 |
| Popis: | Co-Cr-Mo alloy used for an artificial hip joint prosthesis was treated in a vacuum tubular furnace to obtain a thermal oxidation layer with anticipated surface properties. The tribological performance of the thermal oxidation layer was subsequently characterized under bovine serum albumin (BSA) lubrication by suitable accelerating wear with a pin-on-plate tribometer. The influence of (1) BSA concentration in range of 2–20 mg/ml and (2) load in the range of 2–10 N on wear was analyzed. Stability of the oxidation layer was also studied by electrochemical testing to analyze its corrosion resistance. The change in microstructure of the substrate, after removal of the oxidation layer, was also evaluated. Results should that (1) the coefficient of friction (COF) under the applied load of 10 N fluctuated by about 0.15, (2) a higher value of wear loss 4.23 × 10−4 mm3 in 20 mg/ml BSA, and (3) a decrease in the COF and increase in wear loss under a load of 2 to 8 N. It was suggested that the corrosion poten... |
| Databáze: | OpenAIRE |
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