Sol-Gel Coating of Alumina on Stainless Steel (304L) Substrate and its property
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Authors
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School of Mines and Metallurgy, Kazi Nazrul University, Asansol-713340 ,IN
Soumya Mukherjee
DOI:
https://doi.org/10.24906/isc/2019/v33/i3/185423Keywords:
Sol-Gel, Alumina, Stainless Steel, Surface Morphology, Phase Analysis.Abstract
Sol gel coating over steel or stainless steel as substrate is important in terms of wear, hardness, high temperature stability and chemical resistance. For good quality coating it is vital that adhesive strength/bonding, surface preparations are needed to be focussed. Al-isopropoxide is used as the main precursors in water (proper mixing) followed by proper pH maintenance at around 3 with Nitric acid addition. Proper pH aids in deagglomeration among particulates at optimum temperature and soaking period. Sol is converted to gel by evaporation while coating of Al-isopropoxide over stainless steel substrate is carried by repeated vertical dipping. Annealing is carried at 600°C, 900°C and 1200°C for 2 hours in inert Nitrogen atmosphere.Downloads
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Published
2019-05-01
How to Cite
Mukherjee, S. (2019). Sol-Gel Coating of Alumina on Stainless Steel (304L) Substrate and its property. Indian Science Cruiser, 33(3), 37–40. https://doi.org/10.24906/isc/2019/v33/i3/185423
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