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二氧化硅修饰纳米氧化锆陶瓷材料的制备及性能

Jian-hui GUO,Zhi-jun ZHANG

Chemical Research（2012）

Cited 1|Views13
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Abstract
以二甲基二乙氧基硅烷为硅源,在水溶液中成功制备了SiO2修饰纳米ZrO2颗粒；利用透射电子显微镜、热重分析仪、X射线衍射仪、红外光谱仪分析了样品的形貌和结构；将SiO2/ZrO2与α-Al2O3制成陶瓷材料,考察了其机械性能.结果表明,所制备的SiO2/ZrO2晶粒均一,直径约为10 nm,硅原子在SiO2/ZrO2中以Si-O-Zr键合形式存在,SiO2不影响ZrO2的晶型.引入SiO2使得ZrO2晶粒细化、尺寸均匀性提高；SiO2/ZrO2/Al2O3陶瓷气孔率小,具有致密的显微结构和优异的机械性能.
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Key words
preparation,nano-ZrO2,SiO2,properties,ceramic composite
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