porous diffusion

Effect of the outer casing of a porous diffusion type silencer on the noise reduction of silencer

多孔扩散型消声器外壳对其性能影响的研究

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Covered the porous membrane in the evaporation pipe, the diffusion processes divided into two parts, one for free diffusion into the free gas. the other for a period of diffusion into porous membrane.

即在蒸发管管口粘覆被测多孔介质，将扩散质组分通过扩散组分的扩散分为两段，一段为通过静止气体的自由扩散，另一段为通过多孔介质的扩散。

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Oxygen sensor of limiting current type with a porous layer on platinum film electrode to limit the diffusion rate of oxygen was fabricated using the solid electrolyte of nanocrystalline ( 20~ 30nm) YSZ based.

制作了以纳米（20～30nm）YSZ粉体为原料的电解质基片、Pt电极上带有多孔涂层的扩散控制极限电流型氧传感器。

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The effect of the current density and fuel cell temperature, humidified temperature of cathode and anode, porosity of porous diffusion layer on the results mentioned above are discussed.

讨论了质子交换膜燃料电池运行电流密度和温度、阴极和阳极加湿温度、气体扩散层孔隙率等参数对以上结果的影响。

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Development survey of fuel cell and electrode material with gas-diffusion porous substrate made up of carbon-fiber paper home and abroad were demonstrated in the article. The function and performance demand and application prospect of carbon-fiber paper were also presented in it.

阐述了国内外燃料电池及其多孔扩散层电极材料&碳纤维纸的发展概况，介绍了碳纤维纸的作用、性能要求与应用前景。

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The principle of the limit current type oxygen sensor are briefly described, based on this theory, the porous layers type oxygen sensor is made, which diffusion layer is composed of ZrO_2 solid electrolyte and the porous ceramics plate.

极限电流型氧传感器工作原理是基于稳定ZrO2固体电解质的氧泵作用，通过气体扩散控制供给阴极的氧而得到极限电流。

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