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对 Al2 O3颗粒预制体的气孔率测定方法进行了探讨 ,研究了颗粒粒度与压制压力对气孔率的影响。结果表明 :可采用煤油浸渗法来测定颗粒预制体的气孔率 ,颗粒粒度与压制压力是影响气孔率的关键因素
The method for determining the porosity of Al 2 O 3 preform has been discussed. The effect of particle size and pressing pressure on the porosity has also been investigated. The results showed that kerosene infiltration method can be used to determine the porosity of the preform, particle size and pressing pressure are the key factors affecting the porosity