当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2013年
1期
53-54
,共2页
高硫油品%晶间腐蚀%应力腐蚀开裂
高硫油品%晶間腐蝕%應力腐蝕開裂
고류유품%정간부식%응력부식개렬
High-sulfur oil%Intergranular corrosion%Stress corrosion cracking
针对高硫油品环境下的典型奥氏体不锈钢 TP321的裂纹进行了详细分析,能谱分析及扫描电镜照片显示硫化物引起的晶间腐蚀和应力腐蚀开裂是裂纹形成的主因.当材料的工作环境由高温向低温转化后,由硫化物新生的连多硫酸引起的腐蚀行为应当被引起足够的重视.
針對高硫油品環境下的典型奧氏體不鏽鋼 TP321的裂紋進行瞭詳細分析,能譜分析及掃描電鏡照片顯示硫化物引起的晶間腐蝕和應力腐蝕開裂是裂紋形成的主因.噹材料的工作環境由高溫嚮低溫轉化後,由硫化物新生的連多硫痠引起的腐蝕行為應噹被引起足夠的重視.
침대고류유품배경하적전형오씨체불수강 TP321적렬문진행료상세분석,능보분석급소묘전경조편현시류화물인기적정간부식화응력부식개렬시렬문형성적주인.당재료적공작배경유고온향저온전화후,유류화물신생적련다류산인기적부식행위응당피인기족구적중시.
The corrosion behavior of austenitic stainless TP321 in high-sulfur oil was studied. The mechanism and general influence factors of the corrosion were analyzed by energy spectrum analysis and scanning electron microscope. The results show that main formation reasons of the corrosion cracking are intergranular corrosion and stress corrosion caused by sulfides. At the same time, the corrosion behavior caused by polythionic acid formed from sulfides should be paid attention to when the work temperature changes from high temperature to low temperature.
