二氧化钛阴极的粉末冶金制备与熔盐电解脱氧行为分析

《二氧化钛阴极的粉末冶金制备与熔盐电解脱氧行为分析》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、中南大学硕士学位论文ABSTRACTTitaniumhasmanyexcellentperformancessuchascorrosionresistance，nonmagnetic，strongaspectratioandsoon，thereforeithasbeenwidelyusedinaerospace，naval，chemicalindustry，medicalequipment，etcWiththerapidprogressanddevelopmentoftechnologyandeconomy，thedemandforti

2、taniuminvariousfieldsissignificantlyincreasing．ButthehighpreparingcostoftitaniumrestrictedthedevelopmentoftitaniumindustryThusthestudyofpreparingtitaniumbyfusedsaltelectrolysisfromTi02isverymeaningfulInthispaper,apowdermetallurgyprocessedTi02electrodeslicewasusedasnegati

3、vepolefurfusedsaltelectrolyticdeoxidizingexperiment。whichwasproceededat900℃withthecirculatingArgasasprotectionenvironment，underthenewconceptoftwoelectrolysisstepsThestudyfocusedonthepowdermetallurgytechnique，preferencesandcontrolofthemainparametersintheprocessofmoltensal

4、telectrolysis．Themainconclusionswerelistedasfollows：1)ThephasecompositionofTi02electrodeslice，thesizeofmicropanicle，microstructure，porosityandstrengthandotherfactorswerecomprehensivelystudied，andtheoptimizedpreparationtechniqueofthenegativepolewasdetermined：dopingcontent

5、ofcarbonpowderwith5％．formingat30MPapressingpressure，heatpreservationat950"(2for4hours2)Excesscrystalwaterinmoltensaltwasadversefortheelectrolyticexperiment．Itcouldberemovedthrotlghpreelectrolysismethod，andthemainparametersforelectrolysis：2．4Vconstantvoltageelectrolyzingf

6、or15hours3)Inthethreefactorsofporosity，electrolytictimeandelectrolytictemperature，theefficiencyofelectrolysiswasgreatestimpactedbyelectrolytietime，andthesecondfactorwasporosity4)Thedecompressionvolmgeoftitaniumoxidewasincreasinggraduallywiththedecreaseofvalenceoftitanium

7、elementsThelowvalenceoftitaniumwastheconstraintconditionoftheelectricitydeoxidizationprocessduringtheelectrolyticprocess中南人学硕士学位论文^BSTRACT5)Putsforwardtwostepelectricsolution，@usingTi02asthecathode，graphiteelectrodesastheelectrolysisanode，togetthecathodeproduct(titaniump

8、rotoxide)withmostoftheoxygenremoved；②usingthecathodeproductsforanode，metaltitaniumplateasthecathodefors