β-Sialon微細粉的合成及Si-,3-N-,4--Al-,2-O-,3-梯度連接材料的制備.pdf

1、桂林工學院碩士學位論文βSialon微細粉的合成及SiNAlO梯度連接材料的制備姓名：張燁申請學位級別：碩士專業(yè)：材料學指導教師：王林江20070401桂林工學院碩士學位論文AbstractUltrafineflSialonpowdersWCI“epreparedbyusingsol—gelreductionnitridationprocessingAfterofthis，usingtheBsialonpowderforthemediu

2、mmaterialofthegradientmesosphere，completestructureSi3NdAl203functionallygradientconnectingmaterialhasbeenfabricatedbypowderstackingandgaspressuresinteringwithN2protectingandsuitableprocessThecapabilityoftheFGMWasanalysed

3、SuccessfullysynthesizedtheBSialonuitrafmepowder(thecontentisOVer90％1fortherawmaterialoftheexperimentationDesignandoptimizearcthelinchpintoproducematerialwitlltheascendantperformanceTostudythecomponentchangeoftheFGM，wepre

4、paredthesamplescorrespondedtothesinglelayeroftheFGMAndthecompositiondensitymicropenetrationhardnessandthermalexpansionofthesampleweretestedBasedonthetestresults，thechangingtrendofFGM’Scompositionandperformancewereconject

5、uredOnthebaseofstudyingthecapabilitiesofthesinglelayersamplesandtheresearchresultsoftheotherpeoples，weascertainedthelayernumberoftheSi3NdAl203functionallygradientconnectingmaterialis2011lesampleoftheSi3N4／A1203functional

6、lygradientconnectingmaterialwithdensity29329／era3ispreparedwithpowderstackinggaspressllresiuteringwithN2protectingandappropriatesinteringsystemn峙Si3N4／A1203functionallygradientconnectingmaterialscomposedistributionslices

7、urface，finetextureandmierohardnesswereanalyzedbythemeallSofXRD，SEMandmicro∞lerometerete髓etcstresultswerecontrastedwiththeforecastbeforetheexperimentation11地resultsshows：n”componentofthematerialhasagradientdistributionand

8、asymmetryinthemacroscopicbutsuccessionalinthemicrocosmic11圮microhardnessofthematerialisgradientchangingwiththechangeofthemicro—structure，andpfes鋤tachangingcurrentofriseflratthendownThechangingcurrentmoreprovedtherehadsol

9、idsolutionreactioninthesinteringprocessoftheSi3N4／A1203fimctionallygradientconnectingmaterialneresearchonthecrackshowstheinterfaceofmaterialistightcouplingandhasnostressconvergenceTestresultofthermalshockandthermalfatigu

10、ecracksinthesampleoftheSi3NdAl203functionallygradientconnectingmaterialatla00“Cand900℃temperaturedifferenceshowgoodcharactersofthermalstressrelaxingandhightemperatureThisfigureoutthecorrectnessofstructuredesignKeywords：S