Erosion behavior and mechanism of boronised steels

• 作 者: 凌国平\\r\\r\\r\\r\\r\\r\\r\\r\\r\\n 刘涛\\r\\r\\r\\r\\r\\r\\r\\r\\r\\n 刘立\\r\\r\\r\\r\\r\\r\\r\\r\\r\\n 郦剑
• 出 处: Journal of Zhejiang University Science
• 发表日期: 2002年03期
• 关键词: steels Erosion

Boronising of steels is a hardening process to get high surface hardness. The erosion resistance of boronised steels was researched with the use of four kinds of erodent, i.e. glass, alumina, quartz and silicon carbide. The erosion rate increases rapidly with erodent hardness and severe erosion occurs with high impacting angle range of hard particles. SEM analysis indicated that chipping is caused by repetitive impacting of glass and quartz, whereas by alumina and silicon carbide impacting, chipping, and that plastic flow take place simultaneously and the erosion rate reaches the peak value when the impacting angle is above 60°.

Boronising of steels is a hardening process to get high surface hardness. The erosion resistance of boronised steels was researched with the use of four kinds of erodent, ie glass, alumina, quartz and silicon carbide. The erosion rate increases rapidly with edentulous hardness and severe erosion occurs with high impacting angle range of hard particles. SEM analysis indicated that chipping is caused by repetitive impacting of glass and quartz, while by alumina and silicon carbide impacting, chipping, and that plastic flow take place simultaneously and the erosion rate reaches the peak value when the impacting angle is above 60 °.