STEEL GRIPS online - Microstructures and properties of cermet coating on surface of H13 steel applied by vacuum powder sintering

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ISSN 1866-8453

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Dec 4, 2008

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Microstructures and properties of cermet coating on surface of H13 steel applied by vacuum powder sintering
By Xiao-Ping Zhou

Cermet, ternary boride, vacuum powder sintering, surface coating, H13 steel

In this paper the microstructures and properties of ternary boride (Mo2FeB2) based cermet coating on the surface of H13 steel applied by vacuum powder sintering are studied. Effects of sintering technology on the microstructures of the coating are discussed. The interface characteristics between coating and steel substrate, the microhardness distribution and wear resistance in the coating are analysed. The results indicate that the ternary boride-based cermet coatings with a thickness of 1.5 mm are obtained by reaction sintering at 1220 °C. The coating with a microhardness of HV1100 is favourable for wear resistance becaused it is strongly bonded with the substrate by mutual diffusion and penetration of Fe, Cr, V in steel substrate towards the coating and B, Ni, Mo in the coating towards the steel substrate.

STEEL GRIPS 6 (2008) No. 3, p. 209/12

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