晶間腐蝕定量化表示方法研究.pdf

1、華北電力大學(xué)（保定）碩士學(xué)位論文晶間腐蝕定量化表示方法研究姓名：邊娜申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：環(huán)境工程指導(dǎo)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(chǎn)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(cè)量了敏化熱處理時(shí)問(wèn)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(shí)用電化學(xué)再活化(EPR)法和草酸電解浸蝕法分別測(cè)定了這些不銹鋼的敏化度。結(jié)果表明，敏化熱處理時(shí)I’日J(rèn)越長(zhǎng)，E

2、PR法測(cè)得的敏化度越大、硫酸浸蝕法產(chǎn)生的腐蝕溝槽寬度也越大。EPR法測(cè)得的敏化度和硫酸浸蝕法測(cè)得的腐蝕溝槽寬度之I日J(rèn)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(shí)I’ljJ的小銹鋼的敏化程度。關(guān)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