Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process
来源期刊:International Journal of Minerals Metallurgy and Materials2018年第1期
论文作者:Mansour Bozorg
文章页码:94 - 101
摘 要:The properties of Al based nanocomposite metal foams and their corrosion behaviors were investigated in this study. For this, the composite metal foams with different relative densities(porosity) reinforced with alumina nanoparticles were prepared using a powder metallurgy-based sintering-dissolution process(SDP) and Na Cl particles were used as space holders. Then, the effect of nanoparticle reinforcement and different amounts of Na Cl space holders(corresponding porosity) on the microstructure, morphology, density, hardness, and electrochemical specifications of the samples were investigated. It was found that as the relative density increased from 60% to 70%, the wall thickness increased from about 200 to 300 μm, which led to a decrease in pore size. Also, the addition of nanoparticle reinforcement and the increased relative density result in increasing metal foam hardness. Moreover, electrochemical test results indicated that increasing the Al2O3 content reduced the corrosion rate, but increasing the porosity enhanced it.
Mansour Bozorg2
2. Faculty of Chemical & Materials Engineering,Shahrood University of Technology
摘 要:The properties of Al based nanocomposite metal foams and their corrosion behaviors were investigated in this study. For this, the composite metal foams with different relative densities(porosity) reinforced with alumina nanoparticles were prepared using a powder metallurgy-based sintering-dissolution process(SDP) and Na Cl particles were used as space holders. Then, the effect of nanoparticle reinforcement and different amounts of Na Cl space holders(corresponding porosity) on the microstructure, morphology, density, hardness, and electrochemical specifications of the samples were investigated. It was found that as the relative density increased from 60% to 70%, the wall thickness increased from about 200 to 300 μm, which led to a decrease in pore size. Also, the addition of nanoparticle reinforcement and the increased relative density result in increasing metal foam hardness. Moreover, electrochemical test results indicated that increasing the Al2O3 content reduced the corrosion rate, but increasing the porosity enhanced it.
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