六鋁酸鈣多孔陶瓷的合成研究

1、武漢科技大學(xué)碩士學(xué)位論文六鋁酸鈣多孔陶瓷的合成研究姓名：李天清申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：李楠20040510第1I頁(yè)武漢科技大學(xué)碩士學(xué)位論文ABSTRACTEnergyshortagehasbeenbecomeoneofthemainfactorswhichpreventthedevelopingspeedoftheworldeconomyin21centuryDevelopingtheenergysavingsengin

2、eeringrapidlyandusingthehi出qualityinsulatingmaterialswidelyareveryimportanttotheconstructionofthenationaleconomyAsanewenvironmentalandexcellentinsulatingmaterial，calciumhexalunlinatewithporousmicrostructurehasbeennoticed

3、bysomeoverseasscientistsThisporousmaterialcansubstitutefortheconventionalinsulatingmaterials，suchasrefractoryfibermaterials，anditsapplicationprospectisveryextensive111einfluenceofaseriesfactorsonphasesevolutionmicrostruc

4、tureandphysicalpropertiesoftheporouscalciumhexaluminatehasbeeninvestigatedbymeansofTGDSC，XRDandSEMinthispaperThemainresultsareasfollows：1、Theoptimalsynthesistemperatureofcalciumhexaluminateisabovel500℃andnoplanargrainfor

5、minthematerialusingpseudo—boehmiteasrawmaterialCorrespondinglytheoptimalsynthesistemperatureisabout1500“Candthemorphologyofcalciumhexaluminategrainsisallplanal“usingindustrial7alumina，activet／aluminaandaluminiumhydroxide

6、asrawmaterials2)Thephysicalproperties，optimalsynthesistemperatureandmicrostructureofporouscalciumhexaluminateareinfluenceddistinctlybytheparticlesizedistributionofindustrial7alumina漸曲increasingofaverageparticlesizeofindu

7、strial“raluminathethicknessoftheplanargraindecreasesgraduallytheporesizeenlarges，theapparentporosityaddsandthecoldrushingstrengthdescendssharplyThelargestamountofcalciumhexaluminateappearswhentheparticlesizesofindustrial

8、“raluminaandlightweightcalciumcarbonatearecloseeachother3)Comparedwiththetemperaturefactortheinfluencesofmouldingpressure，heatingtimeandmechanicalmillingtimeonphysicalpropertiesoftheporousmaterialisonthesmallside4、Introd

9、ucingcarbonblackintothematerialCandecreasethethicknessoftheplanargrain，increasetheapparentporosityanddescendthecoldrushingstrengthcorrespondingly5)TheinfluenceofMg(CH3COO)2contentonapparentporosityisinsignificant。butonco

10、ldrushingstrengthandmicrostmctureisdistinctWithincreasingofcontentofMg(CH3COO)2，thegrainsizeminishesandthecoldrushingstrengthenhances111egrainsizeenlargesreverselywhenthecontentofMg(CHsC00)2exceeds4％6、TheinfluenceofufSi0

11、2contentonapparentporositycoldrushingstrengthandmicrostructureissignificantWithincreasingofcontentofufSi02，thesizeofplanargraindecreases，NoplanargrainwithedgeformswhenthecontentofSi02exeeds1％KeyWords：calciumhexaluminate，