理化检验-物理分册Issue(11)：806-809,4.DOI:10.11973/lhjy-wl201511014
海水泵叶轮316L不锈钢螺钉的腐蚀原因分析
Cause Analysis on Corrosion of 316L Stainless Steel Bolts of Seawater Pump Impeller
摘要
Abstract
Aiming to the corrosion phenomenon of 316L stainless steel bolt of seawater pump impeller,the cause of bolts corrosion was analyzed through macroscopic and metallographic inspection,chemical composition analysis,scanning electron microscopy and energy spectrum analysis,and potentiodynamic polarization analysis. The results show that the chemical composition of the corroded bolts didn’t meet the standard requirement,and microcracks existed in the metamorphic layer after sparkle drilling under high pulse current.The existence of residual metamorphic layer further degraded the corrosion resistance.Finally the corresponding suggestion was recommended to enhance the bolts corrosion resistance.关键词
海水泵/316L不锈钢/腐蚀/电火花/电偶Key words
seawater pump/316L stainless steel/corrosion/electric spark/galvanic couple分类
矿业与冶金引用本文复制引用
关锰,王冬颖,程从前,李倩,赵杰..海水泵叶轮316L不锈钢螺钉的腐蚀原因分析[J].理化检验-物理分册,2015,(11):806-809,4.基金项目
国家自然科学基金资助项目(51171051,51101024,51171037) （51171051,51101024,51171037）
国家自然科学基金委-神华集团“煤炭联合基金”资助项目(51134013) （51134013）
