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γ-F_2eO_3中加入适当的稀土氧化物及Al_2O_3等制成表面或体电阻型体传感元件,用于可燃气体防爆预警器意义很大,这是γ-Fe_2O_3,磁粉的又一应用,已成功地制备出多孔型γ-Fe_2O_3的气敏元件,并初步对可燃气体进行了测试,显示良好的特性,同时对γ-Fe_2O_3气敏机制,做了适当的探讨。
γ-F 2eO_3 by adding the appropriate rare earth oxides and Al 2 O 3 made of surface or bulk resistive body sensing element for combustible gas explosion warning device great significance, which is γ-Fe 2 O 3, another application of magnetic powder has been successful Gas sensors of porous γ-Fe_2O_3 were prepared. The flammable gas was initially tested and showed good properties. Meanwhile, the gas sensitization mechanism of γ-Fe_2O_3 was also discussed.