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Oxidation properties of nanometer aluminium powders

Hailong Wang

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Abstract

The DSC/TG、XRD and SEM were used to characterize the thermo-reaction properties of nanometer aluminum powders and micro-aluminum under air.The different oxidation condition of these two kinds of powders was studied.The experimental results confirm the different thermo-reaction properties between nanometer aluminum powders and micrometer aluminum.Nanometer aluminum powders would not be oxidized under 550℃,and micrometer aluminum would not be oxidized markedly till 950℃.Nanometer aluminum powders could be obviously oxidized after sintered at 1050℃ for 30min in air and α-Al2O3 particles could be formed at the particle surface.The obtained α-Al2O3 powders has no obvious agglomeration,spherical shape and a mean particle of 100 nm.

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What this paper is about

The DSC/TG、XRD and SEM were used to characterize the thermo-reaction properties of nanometer aluminum powders and micro-aluminum under air.The different oxidation condition of these two kinds of powders was studied.The experimental results confirm the different thermo-reaction properties between nanometer aluminum powders and micrometer aluminum.Nanometer aluminum powders would not be oxidized under 550℃,and micrometer aluminum would not be oxidized markedly till 950℃.Nanometer aluminum powders could be obviously oxidized after sintered at 1050℃ for 30min in air and α-Al2O3 particles could be formed at the particle surface.The obtained α-Al2O3 powders has no obvious agglomeration,spherical shape and a mean particle of 100 nm.

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Available abstract

The DSC/TG、XRD and SEM were used to characterize the thermo-reaction properties of nanometer aluminum powders and micro-aluminum under air.The different oxidation condition of these two kinds of powders was studied.The experimental results confirm the different thermo-reaction properties between nanometer aluminum powders and micrometer aluminum.Nanometer aluminum powders would not be oxidized under 550℃,and micrometer aluminum would not be oxidized markedly till 950℃.Nanometer aluminum powders could be obviously oxidized after sintered at 1050℃ for 30min in air and α-Al2O3 particles could be formed at the particle surface.The obtained α-Al2O3 powders has no obvious agglomeration,spherical shape and a mean particle of 100 nm.

Key concepts: Nanometre, Aluminium, Materials science, Micrometer, Particle size, Particle (ecology), Economies of agglomeration, Metallurgy

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Oxidation properties of nanometer aluminium powders — Research Paper | ScholarLens