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Effect of WC Particle Size on the Abrasive Wear of Thermally Sprayed WC-Co Coatings

Four types of WC-Co powders with different WC particle sizes are sprayed to produce WC-Co coatings with a Jet-Kote gun using a gas mixture of C 2 H 2 -30% C 3 H 6 and pure propylene as fuel gases. The carbide size in sprayed high velocity oxy-fuel (HVOF) WC-Co coatings is measured from the microstru...

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Published in:Materials and manufacturing processes 1999-01, Vol.14 (2), p.175-184
Main Authors: Li, Chang-Jiu, Ohmori, Akira, Tani, Kazumi
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Language:English
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description Four types of WC-Co powders with different WC particle sizes are sprayed to produce WC-Co coatings with a Jet-Kote gun using a gas mixture of C 2 H 2 -30% C 3 H 6 and pure propylene as fuel gases. The carbide size in sprayed high velocity oxy-fuel (HVOF) WC-Co coatings is measured from the microstructure. The abrasive wear of the coatings is characterized using a Suga abrasive wear tester. The abrasive wear mechanism of thermally sprayed WC-Co is discussed. The relationship between the relative wear of WC-Co coatings and carbide sizes is established according to the strength theory on hard alloy. The correlation with experimental data proves that the relative abrasive wear of WC-Co coating is proportional to square root of relative carbide size.
doi_str_mv 10.1080/10426919908914815
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subjects Applied sciences
Exact sciences and technology
Metals. Metallurgy
Nonmetallic coatings
Production techniques
Surface treatment
title Effect of WC Particle Size on the Abrasive Wear of Thermally Sprayed WC-Co Coatings
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