材料科学
烧结
微观结构
衍射仪
维氏硬度试验
复合材料
复合数
粉末冶金
石墨烯
扫描电子显微镜
铝
纳米技术
作者
Mevlüt Gürbüz,Mahmut Can Şenel,Erdem Koç
标识
DOI:10.1177/0021998317740200
摘要
Currently, graphene is used in aluminum matrix composite manufacturing due to its superior mechanical properties. However, few detailed studies exist on the effect of the process conditions such as sintering temperature ( T S ), time ( t S ), and a number of graphene nanoplatelets. Therefore, the effects of different sintering times ( t S = 60, 120, 180, 300 min), sintering temperatures ( T S = 550, 600, 630℃), and graphene addition (0.1, 0.3, 0.5 wt%) on apparent density and hardness were reported in detail in this study. The crystal structure and microstructure of fabricated composites by powder metallurgy method were examined with X-ray diffractometer and scanning electron microscopy. Apparent density and mechanical properties were tested by density meter and micro Vickers hardness tester. The results indicated that the best sintering time, sintering temperature, and graphene addition were determined to be 180 min, 630℃, and 0.1 wt%, respectively, for the best hardness of composite. The hardness of composite increased from 38 to 57 HV when compared with pure aluminum under the best process conditions.
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