Role of carbon and nitrogen in the improvement of corrosion resistance of new powder metallurgy Co-Cr-Mo alloys

Author:

Garcia-Cabezon Cristina1ORCID,Garcia-Hernandez Celia2,Rodriguez-Mendez Maria L.2,Herranz Gemma3,Martin-Pedrosa Fernando1

Affiliation:

1. Materials Engineering, E.I.I., Universidad de Valladolid , Paseo del Cauce 59, 47011 Valladolid , Spain

2. UVASENS, E.I.I., Universidad de Valladolid , Paseo del Cauce 59, 47011 Valladolid , Spain

3. UCLM PIM Research Laboratory, INEI-ETSII, Universidad de Castilla-La Mancha (UCLM), ETSI Industriales , E-13071 Ciudad Real , Spain

Abstract

Abstract Microstructural changes that result in relevant improvements in mechanical properties and electrochemical behavior can be induced using different sintering conditions of ASTM F75 cobalt alloys during their processing using powder metallurgy technique. It has been observed that the increase in carbon and nitrogen content improves corrosion resistance and mechanical properties as long as the precipitation of carbides and nitrides is avoided, thanks to the use of rapid cooling in water after the sintering stage. In addition, the reduction of the particle size of the powder improves hardness and resistance to corrosion in both acid medium with chlorides and phosphate-buffered medium that simulates the physiological conditions for its use as a biomaterial. These results lead to increased knowledge of the role of carbon and nitrogen content in the behavior displayed by the different alloys studied.

Publisher

Walter de Gruyter GmbH

Subject

General Materials Science,General Chemical Engineering,General Chemistry

Reference52 articles.

1. Abdullah R, Adzali NMS, Daud ZC. Bioactivity of a bio-composite fabricated from CoCrMo/bioactive glass by powder metallurgy method for biomedical application. 5th International Conference on Recent Advances in Materials, Minerals and Environment (& 2nd International Postgraduate Conference on Materials, Mineral and Polymer. Proc Chem 2016; 19: 566–570.

2. Asgar K, Peyton FA. Effect of microstructure on physical properties of cobalt-based alloys. J Dent Res 1961; 40: 63–72.

3. ASTM F75-18. Standard specification for cobalt-28 chromium-6 molybdenum alloy castings and casting alloy for surgical implants (UNS R30075). West Conshohocken, PA: ASTM International, 2018.

4. ASTM Standard G-5-87. Standard reference test method for making potentiostatic and potentiodynamic anodic polarization measurements. Philadelphia: ASTM, 1993.

5. Bettini E, Leygraf C, Pan J. Nature of current increase for a CoCrMo alloy: transpassive dissolution vs. water oxidation. Int J Electrochem Sci 2013; 8: 11791–11804.

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