摘要
通过采用梯度技术在水轮机叶片表面得到梯度分布的涂层,并通过立式万能摩擦磨损试验机以及德国蔡司(ZEISS)研究级体视显微镜进行分析来研究涂层的耐磨性能。结果表明,800#碳化硅为表面涂层时具有更好的耐磨性能,其耐磨性能提高到没有涂层时的4倍之多,大大提高了水轮机叶片的耐磨性能。同时,也说明所采用的梯度技术即由里到外涂层中碳化硅的含量逐渐增加而粒度逐渐减少的涂层技术,是合理的、可行的。
The gradient distributed coatings on the blade surface of hydro-turbine are achieved by using gradient technology, and the wear-resisting performances of coatings are investigated by friction-wear test and research-level stereomicroscope of Germany Zeiss observation. The experimental results show that the 800~ silicon carbide coating has better wear-resisting performance which is as many as four times than without coating and can significantly improve the wear-resistance of turbine＇s blade. Moreover, the study also indicates that the adopted gradient technique is reasonable and feasible, in which, the content of silicon carbide is gradually increased from internal to surface of coating but the particle size of silicon carbide is gradually decreased.
出处
《水力发电》
北大核心
2014年第4期61-64,共4页
Water Power
关键词
梯度技术
耐磨性
涂层
水轮机
gradient technology
wear-resisting performance
coating
hydro-turbine
