Open AccessStudy of sintered aluminum materials with nanoparticles microadditions
Author(s) -
Л. Е. Агуреев,
С. В. Савушкина,
И. Н. Лаптев,
Б. С. Иванов,
А. В. Иванов,
В. И. Костиков,
Ж. В. Еремеева
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/848/1/012078
Subject(s) - materials science , indentation hardness , corrosion , nanoparticle , zirconium , metallurgy , microstructure , sulfuric acid , aluminium , grain size , magnesium , particle size , powder metallurgy , nitric acid , nuclear chemistry , chemical engineering , chemistry , nanotechnology , engineering
Sintered aluminum materials with small additions (0.01-0.15 vol.%) of aluminum, zirconium and magnesium oxide nanoparticles were obtained by powder metallurgy. The microstructure of the samples and the effect of the nature and concentration of nanoparticles on the matrix grain size, density, microhardness, and corrosion resistance in 10% solutions of nitric and sulfuric acids were studied. The addition of nanoparticles led to matrix grains decrease, an increase in the density, microhardness, and corrosion resistance of sintered aluminum samples. The lowest value of grain size was shown by the sample with 0.1% vol. magnesium oxide. Sintered aluminum material with 0.05% vol. zirconium oxide nanoparticles had the highest density∼ 2.67 g/cm 3 . The highest Vickers microhardness at the level of 0.474 GPa was obtained for material with the addition of 0.1 vol.% Al 2 O 3 nanoparticles. All samples showed significantly greater corrosion resistance in comparison with pure sintered aluminum. The samples with nanoparticles withstood 30 hours of testing, and pure aluminum dissolved in nitric acid in 15 hours, and in sulfuric acid in 10.