Influence of nano and micro particles on the expansion and mechanical properties of aluminum foams
Abstract In this study, the foaming behavior of metal matrix composites (MMCs) containing micron- and nano-sized TiB 2 particles was compared. Foaming was achieved by adding blowing agent into the MMC melt at 670°C. Macrostructural and microstructural characterization of the foams were performed by using X-ray tomography and scanning electron microscopy. Quasi-static compression tests were conducted to analyze the mechanical behavior of the foams. Foams stabilized by nanoparticles showed higher expansion than those stabilized by micron-sized particles indicating a better stabilization by nanoparticles. The foams containing nanoparticles also exhibited better mechanical properties. This is mainly due to the presence of nanoparticles in the microstructure.
원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
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