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Vol.47, No.5, 290 ~ 297, 2009
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| Title |
| Effects of Powder Mixing on the Mechanical Properties of Thermally Sprayed WC-Co-Cr Coating Layers |
| 이창우 Chang Woo Lee , 한준현 Jun Hyun Han , 신명철 Myung Chul Shin , 권숙인 S. I. Kwun |
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| Abstract |
| We report on the effects of mixing of powders with various particle sizes on fracture toughness and wear resistance of thermally sprayed WC-10Co-4Cr coating layers fabricated by HVOF (high-velocity oxygen fuel) process. The size and the mixing ratio of powders were changed in order to get high fracture toughness and wear resistance. The mixing of small amount of coarse powders with fine powders resulted in the highest fracture toughness and wear resistance due to the lowest porosity in coating layers. (Received November 1, 2008) |
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| Key Words |
| thermal spray, HVOF, WC-Co-Cr, powder mixing, porosity, wear |
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