Formation of WC/12％Co Coatings by High Velocity Oxygen-Fuel Spraying with High Wear Resistance and Lower Surface Roughness

摘要：

The structural and mechanical properties, in terms of surface roughness, hardness and wear resistance, of WC/12wt％Co coatings are investigated as a function of powder properties, such as powder size and WC grain size, as well as high velocity oxygen-fuel (HVOF) spray conditions. It has been found that the WC/12wt％Co coatings with relatively smoother surface, about 2 μm in average surface roughness (Ra), retaining high wear resistance can be formed by optimizing the powder and spray parameters. Further, we have found that powder size can control the surface roughness over a wide range; from about 2 to 7 μm (about Δ5 μm) in Ra. On the other hand, Ra changed only about Δ1 μm or more when changing spray conditions, such as barrel length and spray distance.

作者: K. Sato H. Ibe H. Mizuno J. Kitamura

作者单位: Fujimi Incorporated, Kakamigahara, Gifu, Japan

会议类型: 国际会议

会议名称: 2007国际热喷涂大会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-05-14（万方平台首次上网日期，不代表论文的发表时间）