WC-M coating to improve resistance of hydraulic turbines to cavitation erosion and abrasion

被引：0
|
作者：
王飚
王宇东
张自华
机构：
[1] China
[2] Department of Mechanical Engineering
[3] Department of Mechanical Engineering Kunming University of Science and Technology
[4] Kunming 650051
来源：
Transactions of Nonferrous Metals Society of China | 2003年 / 04期
关键词：
WC M coating; cavitation erosion; abrasion hydraulic turbines;
D O I：
暂无
中图分类号：
TG174.44 [金属复层保护];
学科分类号：
080503 ;
摘要：
WC M hard faced ceramic coating was made on the substrate of steel by means of high velocity oxygen fuel flame (HVOF) thermal spraying. The resistance of this coating to cavitation erosion and abrasion (CEA) is about 2.5 times higher than that of 188 stainless steel, and is about 1.5 times higher than that of Stellite alloy (CoCrWC) made in America. When this coating were applied to the hydraulic power stations with more silt content in the flow water, which reaches 50 kg/m 3, the resistance of above mentioned coating to CEA was about 2 times to that of NiCr alloy coating, and is about 45 times to that of OCr13Ni4Mo stainless steel. In addition, the micro hardness, microstructures and electron probe analyzing of the WC M coating are all discussed.
引用
收藏
页码：893 / 897
页数：5
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