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1、ScienceDirect学科指南PorousAluminaCeramicsFabricatedbySparkPlasmaSintering多孔氧化铝陶瓷的放电等离子烧结技术制备WANGKun,FUZheng-yi*,PENGYong,WANGYu-cheng,ZHANGJin-gong,ZHANGQing-jie王坤，福郑毅，彭勇，王宇城，张晋宫，张庆街StateKeyLabofAdvancedTechnologyforMaterialsSynthesisandProcessing,WuhanUniversityofTechnologyWuhan,4300
2、70,China国家重点实验室先进的材料合成与加工技术，武汉理工大学，武汉，430070，中国Received10August2006;accepted6November20062006年8月10收到；2006年11月6日接受Abstract摘要Porousaluminaofregularsphericalparticleswasfabricatedwiththesparkplasmasintering(SPS)andthencomparedtothoseobtamedthroughconventionalhotpressing(HP).Theeffects
3、oftheparametersoftheheatingprocessonporositywerealsoinvestigated.Microstructuralstudiessuggestthatporousingotsincludingregularporesbemadeoutofregularsphericalaluminaparticlesduetotheclosespherepackages.AcomparativestudyontherelativenecksofthespecimensproducedbySPSandHPindicatesanen
4、hancementofneckgrowthwithSPS.Contrastingthetheoreticalvaluestotheexperimentalresultsovertherelativenecksindicatesthataproperrelationshipbetweentherelativenecksandtheporositycanbeestablishedbyasinteringmodel.多孔氧化铝为规则的球形颗粒与放电等离子烧结（SPS）制备，然后比较分析通过常规热压（惠普）。同时考察了加热过程的参数对孔隙率的影响。微观结构研究表明，
5、多孔硅锭包括定期毛孔被制造出来的规则的球形氧化铝颗粒由于接近球包。在SPS和惠普生产的标本，相对的脖子比较研究表明SPS颈部生长的增强。对比理论值的实验结果表明，在相对的脖子相对的脖子和孔隙度之间的关系可以通过烧结模型的建立。Keywords:sparkplasmasintering(SPS);porousaluminaceramics;sinteringneck关键词：放电等离子烧结（SPS）；多孔氧化铝陶瓷；烧结颈1Introduction1引言Porousaluminaceramics,whichhavebothfunctionalandstructu
6、ralproperties,havebeenwidelyappliedinthechemicalindustries,metallurgicalindustries,medicalindustries,andmanyotherfieldsofengineering[1].Thevariousdesignandperformancecharacteristicsofporousaluminaceramicsareprincipallyconcentratedaboutcontrolledporosityandpore-size,highstrength,hea
7、tandcorrosionresistance,durability,shockresistance,andgoodpermeability.Therearemanytechniquestofabricateporousaluminaceramics,butthemajorityofthoseneedtoaddorganicpolymersasporeformingmaterials[2].However,sparkplasmasintering(SPS)issuggestedtobeeffectiveonthefabricationofporousalum
8、inaceramicsbecauseitmakesp
