Article ID Journal Published Year Pages File Type
1663497 Surface and Coatings Technology 2006 6 Pages PDF
Abstract

A PRC-3 kW continuous wave CO2 laser was used to clad a MoS2/TiC/Ni coatings on the surface of a 1045 low carbon steel substrate. The microstructure and phase composition of the composite coating were studied. The typical microstructure of the composite coating is composed of multi-sulfide phases including binary element sulfides, ternary element sulfides, Ni, TiC and Mo2C. Wear tests were carried out using a FALEX-6 type pin-on-disc machine. The results showed that the MoS2/Ni coating (as a contrasted sample) exhibited the lowest friction coefficient and the largest weight loss in comparison to other investigated specimens. The friction coefficient of the MoS2/TiC/Ni coating is lower than that of quenched 45 steel and weight loss is only one-sixth of that of 45 steel. The worn surface of MoS2/TiC/Ni laser cladding coating is so clean and smooth (no noticeable groove and scratches visible) that the microstructure of coating is identified after dry wear test of 40 min.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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