发明名称 CERAMICS MATERIAL HAVING LOW THERMAL EXPANSION AND ITS PRODUCTION
摘要 PURPOSE:To improve strength of blending Ti0z powder with Al2O3 powder in a stoichiometric amount ratio, adding specific total amounts of SiO2, MgO and Al2O3, slurrying the blend with water, molding, drying and burning. CONSTITUTION:TiO2 powder and Al2O3 powder both having <=0.5mu average particle diameter are blended in a stoichiometric amount ratio. The blended powder is mixed with agalmatolite and talc so as to give 8-12wt.% total ratio of SiO2, MgO and Al2O3 to give raw material powder. Then the raw material powder is mixed with a proper amount of water, mixed by a ball mill, etc., to prepare a slurry. The slurry is cast into a gypsum mold, dried and solidified to form a molded article. Then, the molded article is removed from the mold, dried, solidified and burnt at 1,450-1,525 deg.C to give ceramics materials of low thermal expansion, such as burnt material of ammonium titanate, having <=20mum particle diameter, 10-15% controlled pore volume, high strength and low thermal expansion.
申请公布号 JPH05279116(A) 申请公布日期 1993.10.26
申请号 JP19920104051 申请日期 1992.03.31
申请人 发明人
分类号 C04B35/46 主分类号 C04B35/46
代理机构 代理人
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