발간논문

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Vol.25, No.3, 183 ~ 191, 1987
Title
Liquid - Grain Mixture Flow and Isolated Pore Elimination during Early stage of Liquid Phase Sintering
박상엽Sang Yeup Park, 백용균Yeong Kyeun Paek, 강석중Suk Joong Kang
Abstract
Liquid-grain mixture flow for the elimination of isolated pores during liquid phase sintering has been studied. Isolated pores have been created in various Mo-Ni alloys by embedding 3 wt % of spherical Ni particles of 100㎛ diameter in fine Mo-Ni powder compacts. The total Ni content has been varied from 4 to 10 wt %. In the specimens with lower liquid content (=8 vol %), the skeleton of 9 grains around pores remains intact and the pores are mainly filled by liquid, producing liquid pockets at the pore sites. With increasing the liquid content, the dominant mechanism operating for the elimination of large pores becomes liquid-grain mixture (low into pores, forming liquid-grain mixture pockets. Effect of initial Mo powder size on the pore elimination processes is also discussed.
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