電力應用銅鎳-銅鋅合金耐腐蝕機理的光電化學研究.pdf

1、上海大學碩士學位論文電力應用銅鎳銅鋅合金耐腐蝕機理的光電化學研究姓名：萬宗躍申請學位級別：碩士專業(yè)：物理化學指導教師：印仁和徐群杰20080501上海人學碩士學位論文AbstractThecopperalloyisusedmoreandmorewideinnationaleconomyanditscorrosionhasalsobeenconcernedButthereislittleresearchaboutthemechanismo

2、fcupronickelandbrassinsomespecificallyappliedsystemforelectricpowermilitaryaffairsandSOonItwillbeagoodinstructionalvaluebystudyingthemechanismforcopperalloycorrosioninsupervisingproductionandapplicationforthefuture，aswel

3、lasbasicresearchInthispaperitisfirsttimetostudytheanticorrosionandinhibitingmechanismforcupronickelB30，B10andbrassinsimulatedcoolingwaterbyusingelectrochemical，photocurrentresponsemethodsandEISThephotocurrentresponsemeas

4、urementsindicatedthatthecopperalloyelectrodeshowedaP—typephotoresponsewhichcamefromCu20layeronitssurface，butitsWaslessthaninboraxbuffersolutionItshowedaPtypephotoresponseonpositivepotentialscanforcupronickelB30electrodei

5、nsimulatedcoolingwatercontainingvariousCI。，S04厶concentrations，butitWaschangetontypeonnegativeTherefore，thecorrosionresistingpropertyofthecupronickelB30electrodeappearsworsewiththeincreasingoftheirconcentrationsIts知虬眥decr

6、easedwhenthecupronickelB10electrodeWasimmersedinsimulatedcoolingWaterItalsoshowedthatthecorrosionresistingpropertyofthecupronickelB10electrodeWasgettingworseandthecorrosionextentincreasedwiththeincreasingofconcentrationo

7、fC1。、S042andS2ions，aswellaspHButthephotoresponsechangedfromptypetontypegraduallyasthetemperatureWasincreasedTherefore，thecorrosionresistingpropertyWasgettingworseThebrasselectrodeshowedaptypephotoresponseonpositiveandneg

8、ativepotentialscan)whichcamefromCB20layeronitssurfaceThecorrosionresistingpropertyofthebrasselectrodeappearedbetter研ⅡltheincreaseintheconcentrationofCl。，S042‘，andS2ionsunder4992m#L、808mg／L、lOmg／LrespectivelyBesidethat，th

9、ecorrosionofbrasswasgettingWOrseAsthepHincreasedintherangeof7to10，thecorrosionresistingpropertyofbrasselectrodewasenhanced，whileit’SlowerasitspHbeyond10Inadditionwhenthetemperaturerosebetween20℃～60℃，andthecorrosionresist

10、ingpropertyWasenhancedlittle，nleselfassembledmonolayer(SAMs)ofphyticacid(PA)and3aminoI，2，4triazole(ATA)onthesurfaceofcopperalloyofanticorrosionandinhibitingmechanismhavealsobeeninvestigatedbyelectrochemicalandphotocurren