DETERMINATION OF THRESHOLD PRESSURE FOR INFILTRATION OF LIQUID ALUMINIUM INTO SHORT ALUMINA FIBER PREFORM

来源期刊：中国有色金属学报(英文版)1996年第4期

论文作者：Hu Lianxi Luo Shoujing Huo Wencan

文章页码：133 - 137

Key words：liquid infiltration;　effective capillary tube radius　;threshold infiltration pressure

Abstract: The statics of infiltration of liquid metal into short fiber preform was theoretically analysed by treating the fiber preform as a porous body. Two representative fiber distribution models, of which one assumed a planar distribution while the other assumed a quasi-planar distribution, were proposed and equations for calculating the effective capillary tube radius of the preform and the threshold pressure for infiltration corresponding to either fiber distribution model were derived respectively. By liquid infiltration experiment, the threshold pressure for infiltration of an Al-1.5 Mg aluminium alloy /short alumina fiber preform system was measured and the theoretical analysis results were well verified.