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《Powder Metallurgy Technology》 2013-01
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Infuluence of sintering temperature on microstructure evolution and mechanical properties of YAG porous ceramics

Song Jieguang,Wang Fang,Li Shibin,Ji Gangchang,Xu Ting,Li Wentao(School of Mechanical and Materials Engineering,Jiujiang University,Jiujiang Key Laboratory of Green Remanufacturing,Jiujiang Jiangxi 332005,China)  
Due to some excellent properties of YAG,it is studied and applied widely.The YAG porous ceramics were prepared via the vacuum sintering technology.The results show that the pore microstructure and crystal particles of YAG porous ceramics prepared by the vacuum sintering method at 1 500 ℃ are homogeneous and regular,pore size is about 5μm,and the fracture type is of intergranular fracture.The pore mivrostructure of YAG porous ceramics prepared at 1 550 ℃ are homogeneous and regular,the pore size is about 2-5 μm,the crystal has rod-shape or acicular structure,and the fracture type is of intergranular fracture and intracrystalline fracture.The pore microstructure of YAG porous ceramics sintered at 1 600℃ is disappeared basically,the crystal has laminate structure,and the fracture type is of intracrystalline fracture.With increasing the sintering temperature,the porosity is decreased gradually and the energy consumption is increased,the suitable sintering temperature of YAG porous ceramics is 1 550 ℃.
【Fund】: 江西省自然科学基金资助项目(20114BAB216023);; 江西省教育厅科学技术研究基金项目(GJJ09595);; 江西省“十二五”重点学科(材料加工工程)建设项目
【CateGory Index】: TQ174.1
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