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采用化学沉淀法与浸渍法结合制备的Ａｇ－ＳｎＯ＿２粉料，金属银无规则地分布于ＳｎＯ＿２的表面，当Ａｇ的掺杂量为２ｗｔ％左右、工作温度在２６０℃左右时，可获得气敏性能良好的可燃气体敏感元件。
Ag-SnO 2 powder prepared by chemical precipitation and impregnation method was used. The silver metal was randomly distributed on the surface of SnO 2. When the doping amount of Ag was about 2 wt% and the working temperature was about 260 ℃, the gas sensitivity Good performance of combustible gas sensitive components.