MICROSTRUCTURE PERFORMANCE AND SYNTHESIS OF THE ARGON-ARC CLAD COBALT BASE COMPOSITE COATING

Jianing Li, Molin Su and Liwei Zhang
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Jianing Li: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China
Molin Su: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China
Liwei Zhang: School of Materials Science and Engineering, Shandong Jianzhu University, Jinan 250101, P. R. China

Surface Review and Letters (SRL), 2019, vol. 26, issue 05, 1-4

Abstract: Composite coating was obtained by argon-arc clad (AAC) of the Stellite20-Si3N4 pre-placed mixed powders on a TA7 titanium alloy substrate, which increased the micro-hardness of the substrate surface significantly; then this produced coating was re-melted by an argon arc, forming a hard layer on the coating surface. The AAC and re-melted coatings were investigated using a scanning electron microscope and high-resolution transmission electron microscope, indicating that amorphous and nanocrystalline phases were produced in the coating surface after an argon-arc re-melting process, which increased the wear resistance of such coatings significantly.

Keywords: Surface treatments; argon arc cladding; composites; nanostructures (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1142/S0218625X18501895

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