電容器級(jí)鉭粉和陽(yáng)極塊的顯微形貌及微觀結(jié)構(gòu)的研究.pdf

1、中南工業(yè)大學(xué)碩士學(xué)位論文電容器級(jí)鉭粉和陽(yáng)極塊的顯微形貌及微觀結(jié)構(gòu)的研究姓名：劉紅東申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：有色金屬冶金指導(dǎo)教師：鐘海云盧振達(dá)2000.6.1TheMicromorphologyandMicrostructureofTantalumPowderforCapacitorandTantalumAnodeAbstractThemicromorphology、mierostructure、componentsandporosity

2、oftantalumpowderforcapacitorandtantalumanodeindifferenttechnologicalstageswerestudiedbyusingSEM、TEM、EDSandmeasurementofporosityincombinedwiththemethodofliquiddepositionlocalinsetTheformeddefectsinTaparticleandoxidefilmwe

3、reexaminedindetailandreasonwasexplainedThemicroscopicmechanismforchangingpropertiesoftantalumpowderandtantalumanodewasstudied，whichprovidesaguidancefortheoptimumofthetechnologicalparametersinindustryTheresultsshowasfollo

4、ws：1ThemicromorphologyissimilarindifferentstagesforproducingTantalumpowder，beingaconcentricalparticleTherangeofthesizeisfromafewtoafewhundredmicrometerWiththetreatmenttotantalumpowderthecrystalinterfacesamongtheparticles

5、becomemoreobvious，andtheparticledensitygetshigherTantalumpowderisofcrystalstructureandthesizeislessthan1timAnimpuritydoesn’texist2Threesimilardefectsincludingthickcake、thehardsurNce、thecavity，exsitinsidetantalumpowderwhi

6、chareproducedinsodium—reductionprocess，areincreasedintheconsequences3TheanodeindifferentstageshassimilarfeatureofmicromorphologywithbeingtheporousThesizeinanodeisbiggerincomparedwithoriginaltantalumpowderOnlyatbeginningo