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MODEL FOR INFILTRATION KINETICS OF LIQUID METALS AND ITS APPLICATION

XIA Zhenhai Hebei Institute of Technology , Tianjin , ChinaMAO Zhiying ZHOU Yaohe Northwestern Polytechnical University , Xi'an , China Doctor , Faculty of Foundry , Department of Mechanical Engineering No.2 , Hebei Institute of Technology , Tianjin 300132 , China

金属学报(英文版)

On the basis of fluid kinetics,a model for infiltration kinetics of liquid metals into fibre pre- fabricated composite has been proposed.The infiltration processing,together with the measurements of infiltrating velocity and permeability,for the C fibre-reinforced Al matrix composites have been studied.The model proposed seems to be in good agreement with the ex- perimental results.Two different infiltration modes,uniform and non-uniform,were found and a new technique was suggested.Thus,the quality composites of C fibre-reinforced Al may be made under low pressure regardless of non-wettability of liquid metal to the fibres.

关键词: liquid metal , null , null

BEHAVIOUR OF VACANCY INFLUENCE DURING DIFFUSION IN METALS

ZHANG Sanhong HE Xinlai CHU Youyi KE Jun (T.Ko) University of Science and Technology Beijing , China Doctor , Department of Materials Physics , University of Science and Technology Beijing , Beijing 100083

金属学报(英文版)

The effects of vacancies on diffusion of interstitial and substitutional atoms as well asinteraction between them in metals were discussed.In the interstitial alloy,a coupling betweeninterstitial atoms and vacancy is interrelated through the reaction of formation anddissociation of complex.For substitutional alloy with E_b

关键词: vacancy , null , null

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