Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process

Mostafa Amirjan; Mansour Bozorg

doi:10.1007/s12613-018-1551-5

Volume 25 Issue 1

Jan. 2018

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文章导航 > 矿物冶金与材料学报（英文） > 2018 > 25(1): 94-101

Mostafa Amirjanand Mansour Bozorg, Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 94-101. https://doi.org/10.1007/s12613-018-1551-5

Cite this article as:

Mostafa Amirjanand Mansour Bozorg, Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process, Int. J. Miner. Metall. Mater., 25(2018), No. 1, pp. 94-101. https://doi.org/10.1007/s12613-018-1551-5

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研究论文

Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process

Mostafa Amirjan^1,,
Mansour Bozorg²

Metallurgy Division, Department of Chemical and Materials Engineering, Niroo Research Institute, Tehran 1468617151, Iran
Faculty of Chemical & Materials Engineering, Shahrood University of Technology, Shahrood 3619995161, Iran

通讯作者:
Mostafa Amirjan E-mail: mamirjan@nri.ac.ir,Mostafa.Amirjan@gmail.com

中文摘要

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 NaCl particles were used as space holders. Then, the effect of nanoparticle reinforcement and different amounts of NaCl 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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Research Article

Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process

Mostafa Amirjan^1, and
Mansour Bozorg²

+ Author Affiliations

Abstract

Abstract

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 NaCl particles were used as space holders. Then, the effect of nanoparticle reinforcement and different amounts of NaCl 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.
- aluminum-alumina nanocomposite;
- metal foam;
- sintering-dissolution process;
- corrosion behavior;
- electrochemical impedance

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Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process

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Properties and corrosion behavior of Al based nanocomposite foams produced by the sintering-dissolution process

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