礬土基-氧化鋁基α-Al-,2-O-,3-納米粉體的制備.pdf

1、鄭州大學碩士學位論文礬土基氧化鋁基αAlO納米粉體的制備姓名：崔香枝申請學位級別：碩士專業(yè)：材料學指導教師：鐘香崇賈曉林20060501鄭州大學碗1：學位論義AbstractPr印ar撕onofdA1203nanopowderwimtllreem甜lodsa)calcimnganddecompositiondirectly齔吼aluInin啪hydIoxidc，b)S01GelmetIlodusingiIldu姍ala1啪inaSol，

2、c)hydromefmalmeIhodbasedbaux王tl：wi也highalumjnacontentwasinV％tig曲耐Thedf＆船ofseed，phasetr柚sfoIm撕onaddinVe’synmesist咖p啪mI龜synthesistinle明ddispersalltonphaSet【aIlsfonnationt鋤p鋤mfeofalumina鋤d盯ainsizewercdiscllssed，鋤dposttreatI

3、llentofpowdcrpr印aredabovewasalsostlldied11leresultsshowedasf0110ws：Mdhoda)，phase缸ansfomI州ont鋤peratureofaA1203w0111dbelowedto950℃wimadditionofl叭％seed(aA1203n粕opowder)鋤d31vt％A1F3orl州％ZnF2柚dwjtllmilling3h，蛐d乒ainsizeof30nm鋤d

4、33nm碥平e嘶vely、Ⅳ0uldbeobtainedfor1hheatpreservationwims鋤eadditionofseed鋤daddi石ves，sampleA4wimdrymilling鋤ds鋤pleC2withwetmillingwouldbe打鋤sf0珊cdtoaA1203atllOO℃and950℃rcsp。嘶vely，andt11e1a札日’sphasetransfomationt鋤peranⅡewouldbel

5、ow刪150℃nlan也ef0Ⅱner’sAnerposttrcaⅡnent，t11esecondaryparticlesizeofpowderis168nm，硼dthesizedis缸jbutionwasn秈w；TEMshowed廿I亂tllemorph0109yofⅡA1203簪ainwasirregularlypoly90na11ddispersedwellMemodb)，Ⅱ一A1203n粕opowder慚tll鰣nsizeof2

6、6眥caIlbep泖aredat800℃wilhadditionofl叭％伊ainseed(Ⅱ一A1203n蛐opowder)aIld1w％ZIlF2，鋤dwitllPEGasdispers蚰t鋤dbyusillgalcoh01asm珊ingm礎llIn111㈣singadditionofZnF2hadlittlee髓ctonthephase仃ansfom撕onteIllperah鵬ofaA1203，butc柚increasetheg咖

7、nsizeofit；lncre舔ingcalcinedteJnperatIIre鋤dreacnontimecanalsesultinincreasingofgminsizeAts啪econdi虹on，usingalcoholas“11jngm鋤uInw髂good鋤咖fo珊ityofshmkingandsolidphasereactionduringcalcinabonsPowder’ssecondarypaniclcsizeis1861

8、111lanerpost‘treatlllent；andTEMshowedthemorphologyofd—A1203n柚opowde‘pr印aredabovewasballrMethodc)，28nmdA1203po、砌erwimalinle枷lliteph船ecaIlbepreparI。dat380℃2hw“hcaldnedslightlybauxite州mhgha1砌ina粥r∞ctallt粕d謝t1101m01L一1NaoHad

9、dition，a11drelativecont朗tsofa—A120，柚dmulliteinhydrothemalproductwere86％、9％，respectiVely；wimmeconc∞tra吐onofNaOHincreasingⅡlehydrothe加a1produm，scolourwouldbecomedark伊adualJy，觚dh盯ddregs印peared，tllesizeofpowderalsoincreased；