Microstructure Characterization and Abrasive Wear Performance of HVOF Sprayed WC-Co Coatings

Abstract:

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In this paper the nanostructured and conventional WC-12Co feedstock powders were thermally sprayed via high velocity oxy-fuel (HVOF) on the mild steel substrate. The influence of the feedstock powder type on the microstructure of coatings and abrasive wear resistance properties was studied. The correlation between the coating microstructure and the wear performance was investigated by analyzing the microstructure and worn surface morphology of the coatings. The results indicated that the nanostructured coating shows higher porosity, but slightly higher microhardness and better abrasive wear resistance than the conventional counterpart. Also, the two coatings have excellent abrasive wear resistance with respect to the substrate.

Info:

Periodical:

Advanced Materials Research (Volumes 189-193)

Edited by:

Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang

Pages:

707-710

DOI:

10.4028/www.scientific.net/AMR.189-193.707

Citation:

H. T. Wang et al., "Microstructure Characterization and Abrasive Wear Performance of HVOF Sprayed WC-Co Coatings", Advanced Materials Research, Vols. 189-193, pp. 707-710, 2011

Online since:

February 2011

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$35.00

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