【摘要】 本文对 BaTiO₃-SrTiO₃（简称 BST）温湿敏多孔陶瓷材料进行了实验研究。用高纯超细草酸氧钛钡和草酸氧钛锶粉体研制的不掺杂或少掺杂 Ba_0.5Sr_0.5TiO₃和 Ba_0.4Sr_0.6TiO₃多孔陶瓷具有良好的多孔性,气孔三维连通。全湿范围内（10～100RH%）湿敏特性接近线性,响应时间<15s。感温特性在居里温度以上30℃之后呈线性关系,测温范围为-20（或-40℃）～+100℃。用工业生产的高纯超细粉体可重复获得相近的性能。更多还原

【Abstract】 In present work,BaTiO₃-SrTiO₃ （BST） temperature-humidity sensing porousceramics has been investigated experimentally.Undoped Ba_0.5Sr_0.5TiO₃ and Ba_0.4Sr_0.6TiO₃ porous ceramics obtained from high-purity,ultra-fine barium oxalate andstrontium oxalate powders have good porosity and three-dimensionally linkedpores.In the whole humidity range（10—100 RH%）,the humidity sensing propertyis nearly linear and responce time is less than 15 s.The temperature sensing pro-perty presents linearity above the temperature which is 30℃ higher than the Curietemperature,temperature measuring range is -20（or -40℃）to +100℃.Very si-milar results can be obtained when industrial high-pure,ultra-fine powders are used.更多还原