聚空心球对陶瓷性能影响的分析-材料物理与化学专业论文.docx

下载文档 降价啦

6
0
约3.77万字
约 57页
2018-05-05 发布于上海
举报
版权申诉
保障服务

聚空心球对陶瓷性能影响的分析-材料物理与化学专业论文.docx

1、本文档共57页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

聚空心球对陶瓷性能影响的分析-材料物理与化学专业论文

EffectofPloy-hollowSpheresonThePerformancesofCeramicAbstractMicron-ceramicploy-hollowspheresarecompositedofsomeceramichollowspheres andparticalsizeisinseveralmicronstoafewhundredmicrons.Theyarecharacteristicof lightweight,highstrength,lowheatconductivity,soundinsulation,wear-resisting,high dispersion,electricinsulationandheatstabilityduetohollow-structure.Asanewlight industrialbasematerial,theyarewidelyusedinmanyareas,suchasaerospace,aviation, military,medicine,chemicalindustry,petroleum,roads,buildingmaterials,refractory insulation,plastics,rubber,resinmaterial,highwaterandsoilconservationanddesert management.Toimprovetheperformanceofceramic,poly-hollowsphereswereaddedinceramic materials.Whenthecrackextendsacrossingthelayerofpoly-hollowsphere,theenergygets dissipationandcrackexpansiondeflects.Bassontheenergyreleaseandcrackdeflectionover and over, high-performanceceramicmaterials arepreparation.Inthispaper,thedensity,contractibilityrate,waterabsorptionandstrengthofAl2O3 porousceramics,preparedbydirect-mixtureaddingpoly-hollowspheres,wereinvestigatedat different sinteringtemperature.Theresultsshowedthatwaterabsorptionofpoly-hollow spherehadnoclearchangingwithdifferentsinteringtemperature.Theceramicweremore compact,withsinteringtemperatureincreasing,theperformancegotimproved.Thefracture toughnessandflexurestrengthincreasedfrom0.5MPa?m1/2and25MPato2.25MPa?m1/2and 250MPa,respectively,at1550degreecomparedat1200degree.Thebondingforcebetween poly-hollow-sphereandmatrixgraduallyincreased,andthefracturebehaviorsof poly-hollow-spheretransform formed inter-hollow spheres to trans-hollow spheres.Wepreparedlaminatedceramicsbyaddingpoly-hollowspheresintosoftlayer. MechanicalpropertiesofAl2O3-Al2O3 andSi3N4-Si3N4 laminatedceramicswerecompared bydifferent massfractions of poly-hollow-spheres andlayer thickness ratios. Samples wereliabletodelaminatingwithvariousmaterialofpoly-hollowsphereandbasalbodydueto differentThermalexpansioncoefficientatdifferentsinteringtemperature.Thehighest