WC-M coating to improve resistance of hydraulic turbines to cavitation erosion and abrasion
来源期刊：中国有色金属学报(英文版)2003年第4期
论文作者：王飚 王宇东 张自华
文章页码：893 - 897
Key words：WC-M coating; cavitation erosion; abrasion hydraulic turbines
Abstract: 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 18-8 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 50kg/m3, the resistance of above-mentioned coating to CEA was about 2 times to that of NiCr alloy coating, and is about 4-5 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.
