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2003•Chinese Journal of LasersRequires access

Microstructure and Properties of Ni/WC Composite Coating Prepared by Laser Cladding

Ping Wu

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Abstract

Ni/WC composite coatings were prepared on A3 steel by laser cladding. The morphology and distribution of WC particles under the different laser power and their influences on the wear resistance properties were studied. The results showed that under the appropriate laser power WC particles partially dissolved, with the epitaxially grown needle like carbide around them. Undissolved WC particles are combined strongly with the coating matrix, which has improved wear resistance when compared with the Ni based alloy coating.

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What this paper is about

Ni/WC composite coatings were prepared on A3 steel by laser cladding. The morphology and distribution of WC particles under the different laser power and their influences on the wear resistance properties were studied. The results showed that under the appropriate laser power WC particles partially dissolved, with the epitaxially grown needle like carbide around them. Undissolved WC particles are combined strongly with the coating matrix, which has improved wear resistance when compared with the Ni based alloy coating.

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Available abstract

Ni/WC composite coatings were prepared on A3 steel by laser cladding. The morphology and distribution of WC particles under the different laser power and their influences on the wear resistance properties were studied. The results showed that under the appropriate laser power WC particles partially dissolved, with the epitaxially grown needle like carbide around them. Undissolved WC particles are combined strongly with the coating matrix, which has improved wear resistance when compared with the Ni based alloy coating.

Key concepts: Materials science, Microstructure, Coating, Composite number, Composite material, Carbide, Wear resistance, Cladding (metalworking)

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