α-Fe_2O_3陶瓷的气湿敏感性  

Gas-Humidity-Sensitivity of α-Fe_2O_3 Ceramics

作　　者：刘维跃[1] M.Pelino C.Cantalini 

机构地区：[1]天津大学材料系 [2]意大利拉奎拉大学材料系

出　　处：《硅酸盐通报》1993年第6期26-30,共5页Bulletin of the Chinese Ceramic Society

摘　　要：本文报道了由针铁矿物原料(α-FeOOH)通过真空热分解得到α-Fe_2O_3,烧结制成陶瓷气湿敏感元件。采用热分解得到的α-Fe_2O_3,其气孔率、比表面积、气湿敏感特性等通过工艺途径被有效地加以控制,从而制备出气孔率大、比表面积高的α-Fe_2O_3粉末。这种高性能的α-Fe_2O_3粉料是一种有希望、具有潜力的气敏陶瓷原料。A method for production of а--Fe_2O_3 through thermal decomposition of а--goethite(а-FeOOH) in vacuum is reported in this paper. The prepared а-Fe_2O_3 powder is characterized byhigher porosity and larger specific area, which is suitably used as material for gas-humidity-sensitiveceramics. The porous ceramic humidity sensor was obtained from sintering а-Fe_2O_3 and wascarefully investigated.

关 键 词：氧化铁陶瓷 陶瓷 气湿敏感性 

分 类 号：TQ174.758[化学工程—陶瓷工业]