Tribological Characterization of Hybrid Metal Matrix Composites Processed by Powder Metallurgy

查看全文 作　　者：M. [1]Megahed;M. A. [1]Attia;M. [1]Abdelhameed;A. G. El-[1]Shafei

机构地区：[1]Department of Mechanical Design and Production Engineering,Faculty of Engineering,Zagazig University,P.O.Box 44519,Zagazig,Egypt

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2017年第30卷第8期,共10页

摘　　要：Aluminum(Al)-based aluminum oxide(Al_2O_3) and silicon carbide(SiC) particles hybrid metal matrix composites were processed by powder metallurgy technique, followed by sintering at 500 ℃ and then hot extrusion. The tribological properties of these composites with different weight fractions of Al_2O_3 and SiC were investigated; extrusion process significantly reduces the extent of porosity after cold compaction and sintering processes. Hybridization of the two reinforcements improved hardness and wear resistance of the composites. With an increase in SiC content, hardness was increased and consequently the wear resistance was enhanced also. Scanning electron microscopy observations show a better interfacial bond between matrix and reinforcements and a better distribution of the reinforcements. 关键词：混合金属矩阵合成粉末冶金学磨料穿坚硬孔

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Tribological Characterization of Hybrid Metal Matrix Composites Processed by Powder Metallurgy

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