Mechanical Strength and Corrosion Rate of Aluminium Composites(Al/SiO2): Nanoparticle Silica (NPS) as Reinforcement

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Published: Apr 25, 2019
DOI: https://doi.org/10.21315/
Keywords:
Aluminium, silica (SiO2), AI/SiO2 composite, mechanical strength, corrosion rate

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Munasir
Department of Physics, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya (UNESA), Jl. Ketintang, Surabaya 60231, Indonesia
Triwikantoro
Department of Physics, Faculty of Mathematics and Sciences, Institut Teknologi Sepuluh, Nopember (ITS), Kampus ITS, Jl. Arif Rahman Hakim, Sukolilo, Surabaya 60111, Indonesia 
Darminto
Department of Physics, Faculty of Mathematics and Sciences, Institut Teknologi Sepuluh, Nopember (ITS), Kampus ITS, Jl. Arif Rahman Hakim, Sukolilo, Surabaya 60111, Indonesia 
Ralph Bäßler
BAM Federal Institute for Materials Research and Testing, Department Safety of Structure (Dpt.7), Unter den Eichen 87, 12205 Berlin, Germany

Abstract

The fabrication and characteristics of amorphous silica reinforced Al matrix composites are studied in this paper. The major starting materials were commercial Al powder and extracted nanoparticle SiO2 (NPS) powder from Indonesian silica sands. Two different active solutions, namely N-butanol and tetramethylammonium hydroxide (TMAH), were introduced during synthesis. Characterisations in terms of physical, mechanical, microstructural and corrosion rate examinations were also employed. Introducing the SiO2 nanoparticles into the Al matrix has decreased the density and increased the porosity of the composites. The addition of N butanol into Al/SiO2 (Al/SiO2(B)) led to broader and lower X-ray diffraction profiles than the addition of TMAH (Al/SiO2(T)). From the microstructural analysis, we found that the SiO2 particles enter and agglomerate into the opening gap of the Al sheets. Furthermore, yield strength, ultimate compression strength and modulus of elasticity tended to reduce the addition of SiO2. The corrosion rate of Al/SiO2(T) was lower than that of Al/SiO2(B) composites.

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Mechanical Strength and Corrosion Rate of Aluminium Composites(Al/SiO2): Nanoparticle Silica (NPS) as Reinforcement. (2019). Journal of Physical Science, 30(1), 81-97. https://doi.org/10.21315/
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Vol. 30 No. 1 (2019)
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