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首页> 外文期刊>日本セラミックス協会学術論文誌 >CH_4-Sensing and High-Temperature Mechanical Properties of Porous CaZrO_3/MgO Composites with Three-Dimensional Network Structure
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CH_4-Sensing and High-Temperature Mechanical Properties of Porous CaZrO_3/MgO Composites with Three-Dimensional Network Structure

机译：具有三维网络结构的多孔CaZrO_3 / MgO复合材料的CH_4传感和高温力学性能

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摘要

Uniformly open-porous CaZrO_3/MgO composites were prepared by pressureless reactive sintering of CaMg (CO_3)_2 and ZrO_2 with 0.5 mass percent LiF additive, and their gas sensing properties to CH_4 were investigated at 700-900 deg C. At > 800 deg C, the porous composites showed rapid responses (approx 1 min) to 1000 ppm CH_4 with sensitivities (R_0/R) of approx 1.7. In addition, the fracture strength (#sigma#_f) of the porous composites was kept constant up to 1300 deg C (#sigma#_f approx 35 MPa for porosity of 47 percent), which demonstrated their high structural stability. The results suggest the feasibility of the porous composites as multi-functional filter materials, i.e., simultaneous hot gas-filtering and gas-sensing in one component.
机译：通过对含0.5质量％LiF的CaMg（CO_3）_2和ZrO_2进行无压反应烧结，制备出均匀开孔的CaZrO_3 / MgO复合材料，并在700-900℃下研究了它们对CH_4的气敏特性。> 800℃ ，多孔复合材料显示出对1000 ppm CH_4的快速响应（约1分钟），灵敏度（R_0 / R）约为1.7。另外，多孔复合材料的断裂强度（＃sigma＃_f）在高达1300℃下保持恒定（＃sigma＃_f约为35 MPa，孔隙率为47％），这表明它们具有很高的结构稳定性。结果表明多孔复合材料作为多功能过滤材料的可行性，即在一个组分中同时进行热气过滤和气敏。

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