熔鹽電化學(xué)法制備Mo—MoSi-,2-功能梯度材料的基礎(chǔ)研究.pdf

1、河北理工大學(xué)碩士學(xué)位論文熔鹽電化學(xué)法制備Mo—MoSi功能梯度材料的基礎(chǔ)研究姓名：何小鳳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：冶金物理化學(xué)指導(dǎo)教師：李運(yùn)剛20060401河北理工人學(xué)碩十學(xué)位論文Abs打actMosi2llasgoodpe晌mancessuchashigllmelnngpoint、inoxidizabili‘yunderhi曲t鋤perature、moderategravity、goodheatandelectricalconduct

2、ivitybut，asmehi曲tcmpemturestmc咖lma渤甜，itsapplicationiscon的edbyf’砌舒bⅢ哆under『oom—temperature鋤dbadint曲sityunderh培htemperatureMoh嬲highmeltingpoint、wearability、goodheatconductiVi母andexcellentmachiIlingpropeny，howeveritisapttop

3、mduceVolatileM003onsIlrfhceinoxidemediumunderhightemperatureInordert0make矗dlu∞ofeXcellcntpropemesofMoandMoSb，怕盯eisveryimportaIlttheoreticaIpIlrpose鋤dapplicationvaluetoreseachtcchniqueofpreparationaboutMoMoSi2fIlI】ctional

4、gradientmatedalAtpresent，t1】ereisn0reportingofresearch6ndingaboutKCl一NaCl_NaFSi02口CLNAKSl0)saltssystemThereisastudy0nbaseaboutpreparationofMoMosi2FGMbyelecm)che戚calmethodinthissystemUsingisothennalsaturationmetllod，wehav

5、eastudyonsilica’ssolubilit)，Theresultjndicatell】atsjJjca’ssoJubjljtya幢鼯謝thtlleinc腳oftempe瑚turea11dNaFconfentusingdiⅡbre塒alandIysismemod，wehaveasnldyanpr主marycrystaItelIlperahlreofFCLNAKSIOsysEernTheresultwhichthereisnosl

6、larpvari撕on誦tIltheincreaseofSi02additionshowt11atSi02hasnosharpinnuenceonpdmary。rystaltemperatllre；PrimarycrystaItcmpcratIlreoftllissystemadsewitlltlleincreaseofNaFcorltentU血gcyclicvolta哪e虹yandch0nopotentiome自ry，wehaveas

7、tLldyonreductionmech砌cs，Theres“tmdicatetl】atredllctionofsiliconisinre、rcrsibleDrocesscon訂olledbydi伍Ision；11ledifmsedcoe幣cientofsi4上is13310氣m2／s(c島鮒=I2IlO一4mol，cm3，T=1073融Usingcyclicvon甜衄etryandclmnoamperome畸，wehaveas“l(fā)dy

8、onprocessofSi町stalli刎onTheresllltindicate恤tpmcessofSi吖stallizanonishemisphcrictridimensionalcrys“nucleusaIldcontinuousgro、vingprocedure；Thedens蚵ofcrystalnucleuscallbeincreasedandgoodsedimentaryfomationc姐beobtainedifexces