Enhancement of cavitation erosion resistance of 316 L stainless steel by adding molybdenum

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• 作者：D.G. Li ; ^{dgli@mail.tsinghua.edu.cn} ; D.R. Chen ; P. Liang
• 关键词：316 L stainless steel ; Cavitation erosion ; Molybdenum ; Energy band bending
• 刊名：Ultrasonics Sonochemistry
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：35
• 期：part_PA
• 页码：375-381
• 全文大小：4443 K
• 卷排序：35

文摘

The influence of Mo on ultrasonic cavitation erosion of 316 L stainless steel in 3.5% NaCl solution were investigated using an ultrasonic cavitation erosion (CE) facility. The morphologies of specimen after cavitation erosion were observed by scanning electron microscopy (SEM). The results showed that the addition of Mo can sharply decrease the mean depth of erosion (MDE) of 316 L SS, implying the increased resistance of cavitation erosion. In order to better understanding the influence of Mo on the cavitation erosion of 316 L SS, the semi-conductive property of passive films on 316 L SS containing different concentrations of Mo were studied by Mott-Schottky plot. Based on Mott-Schottky results and semiconductor physics, a physical model was proposed to explain the effect mechanism of Mo on cavitation erosion of 316 L SS.