Water erosion mechanism of mild carbon steels induced by micro-particles
Water erosion mechanism of mild carbon steels induced by micro-particles作者机构：State Key Laboratory of Tribology Tsinghua University Beijing 100084 China
出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)
年 卷 期：2009年第54卷第24期
页 面：4577-4582页
核心收录：
学科分类：080706[工学-化工过程机械] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学]
基 金：Supported by the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070003103) National Basic Research Program of China (Grant No. 2007CB707702)
主 题：腐蚀机理 钢水 诱导 微颗粒 微观粒子 碳 阈值速度 冲击损伤
摘 要：To clarify the water erosion mechanism of the mild carbon steels, the water erosion experiments were performed by using deionized water as steam source. The results showed that under the damage threshold velocity of liquid impact, the material surface would not be destroyed. However, when the micro-particles were added into the steam, the pits appeared on the surface soon. By comparison, it is found that the pits are quite different from those induced by micro-particles impact without steam, but similar to those induced by cavitation erosion. The results indicated that the water erosion mechanism was similar to that of cavitation erosion under the damage threshold velocity. The micro-particles carry the micro-bubbles to approach the surface of the material, and the micro-bubbles collapse and generate micro-jet to impinge vertically on the surface, which lead to the produce of pits.
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