晶間腐蝕定量化表示方法研究.pdf

1、華北電力大學（保定）碩士學位論文晶間腐蝕定量化表示方法研究姓名：邊娜申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：張勝寒20081222華北電力人寧：碩十‘’≯俯論文摘蛩摘要本文研究了用硫酸浸蝕法產生的腐蝕溝槽寬度定量表示不銹鋼，惱11|J腐蝕敏感度的可行性。測量了敏化熱處理時問不同的不銹鋼在稀硫酸溶液IJ七q的腐蝕溝褙的寬度，同時用電化學再活化(EPR)法和草酸電解浸蝕法分別測定了這些不銹鋼的敏化度。結果表明，敏化熱處理時I’日J越長，E

2、PR法測得的敏化度越大、硫酸浸蝕法產生的腐蝕溝槽寬度也越大。EPR法測得的敏化度和硫酸浸蝕法測得的腐蝕溝槽寬度之I日J存在很好的線rE火系可以用腐飩溝槽寬度定：量表以4i銹鋼fl勺，嗷化度。荸酸電解浸蝕法4i能很好的區(qū)分不同敏化熱處理時I’ljJ的小銹鋼的敏化程度。關鍵詞：晶間腐蝕，304不銹鋼，EPR法ABSTRACTInthispaper，studiedthegroovewidthofsulfuricacidcorrosionero

3、sionmethod，andquantitativesaidthefeasibilityofintergranularcorrosionsensitivityofstainlesssteel1measuredSensitizationofthestainlesssteelwhichwereheatedtreatmentatdifferenttimesinsulfuricacidsolutionresultingfromcorrosion

4、groovewidthAtthesametime，electrochemicalreactivation(EPR)andoxalicacidelectro—etchingweremeasuredthedegreeofsensitizationofstainlesssteelTheresultsshowedthatheatedtreatmentsensitizedlonger，EPRmethodmeasuredthegreaterthed

5、egreeofsensitization，sulfuricacidcorrosionerosionmethodgroove7idthgreater，TheEPRmethodmeasuredsensitizationandsulfuricacidetchingmethodmeasuredthewidthofthetrenchbetweencorrosiongoodlinearrelationship1’heEPRmethodmeasure

6、dsensitizationandsulfuricacidetchingmethodmeasuredthewidthofthetrenchbetweencorrosiongoodlinearrelationship，Corrosiongroovewidthcanbeusedtoquantifydegreeofsensitizationofstainlesssteel，Oxalicacidelectro—etchingmethodcann

7、otbegoodtodistinguishbetweendifferentsensitizedstainlesssteelheattreatmenttimethedegreeofsensitivityBianNa(EnvironmentalEngineering)DirectedbyprofZhangShenghanKEYWORDS：intergranularcorrosion，304stainlesssteel，theEPRmetho