三元復(fù)合稀土鎢電極的加工工藝研究.pdf

1、北京工業(yè)大學(xué)碩士學(xué)位論文三元復(fù)合稀土鎢電極的加工工藝研究姓名：韓增軍申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：聶祚仁20040501ABSTRACTInthisthesis，therelationshipamongtheprocessingparametersofthetungstenelectrodedoped誦tllthreerareearthoxides，microstructureanditsdeformingabilityisc

2、arefullystudiedReasonableprocessingtechnologyisdetermined，SOthattherateoffailureofprocessingisdecreasedThetungstenelectrodedopedwiththreerare—earthoxideshasoutstandinghotelectronemissionabilityandhasnoradioactivityharmSO

3、thatitCanbeusedasal【indofgreenweldingmaterialHoweverduetoitsdifferentcompoundfromothertraditionalweldmaterialssomedimcuitieshavetobeovercomeintheprocessingundertheconditionofindustryInthisresearch，twoprocessingroutesared

4、esignedaccordingtothedifferenceoftheprocessingtemperatureanddeformingrate，whichareprovedtobedifferentintheprocessingfailurerateAndthedifferentmicrostructoresarediscoveredintheelectrodesproducedaccordingtodifferentprocess

5、ingparametersbymeansofOM，SEM，XRD，EDAXThecharacterofthemierostructureoftheelectrodewhichhaslowerfailurerateisthatthefabricshapegrainsarelongandorderlyarrangedTheexperimentsshowedthattheprocessingparametersCanaffectthemicr

6、ostructureandtheprocessingfailurerateaswellThroughOUrresearch，theprocessingfailurerateissignificantlydecreasedbyadjustingtheprocessingparametersAndtheaimpropertiesofthetungstenelectrodedoDedwiththreerareearthoxidesproduc

7、edinthefactoryaretestedundertheconditionofnationalstandardThestudyprovedthatthetungstenelectrodedopedwiththreerareearthoxidesCanbeproducedand叩pliedinindustryKeywordstungstenelectrodedopedwiththreerare。earthoxides；sinteri