期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 213, 期 10, 页码 1653-1660出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2013.04.007
关键词
HVOF; WC-Co; Microstructure; Abrasive wear; Sliding wear
资金
- Project of Training Targets of Young Key Teachers of Common College & University in Hunan Province
- National Natural Science Foundation of China [51175165]
Five WC-12Co coatings were deposited by a high velocity oxy-fuel (HVOF) system using constant oxygen flow and varying propylene flow. The phase composition, microstructure, as well as abrasive and sliding wear performance of the as-sprayed coatings were investigated. The degree of tungsten carbide (WC) decarburization in the as-sprayed coatings increases while the coating porosity decreases with the increase of the propylene flow. The coating hardness, fracture toughness, resistance to abrasive and sliding wear increases with the increase of the propylene flow, reaches maximum and then decreases. At the low flow of the propylene, relatively loose coating microstructure is formed, which leads to fracturing and pulling off the WC particles during abrasive and sliding wear process. Herewith, at the high flow of the propylene, the high degree of the WC decarburization and high brittleness of the coating leads to micro-cutting during abrasive wear as well as to cracking and delamination of the coating in the sliding wear process. (c) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据