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알루미늄합금-흑연 복합재료의 제조와 기계적 성질에 관한 연구
최승평,장우양,장충근 조선대학교 동력자원연구소 1986 動力資源硏究所誌 Vol.8 No.2
The preparation of aluminium alloy-graphite particle composite using uncoated graphite particles and the vortex method of dispersion are described. The pretreatment is required of heating the graphite particles to 400℃ in air for 1 hour just prior to their dispersion in the melts. It was also found that the stirrer shaft should be inclined 20˚∼25˚ from the vertical during the uncoated graphite particles being added. In aluminium alloy-graphite particle composite, the variation of mechanical properties at room temperature was investigated in accordance with the graphite content being varied from 0.5 wt% to 2.3 wt%. The values of tensile strength, elongation and hardness were significantly decreased with increasing the amount of graphite added, except for the value of yield strength.