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Journal of Electrochemical Science and Engineering, Vol. 12 No. 4, 2022.

Original scientific paper

https://doi.org/10.5599/jese.1423

A preliminary study into the effect of oxide chemistry on the bonding mechanism of cold-sprayed titanium dioxide coatings on SUS316 stainless steel substrate

Noor Irinah Binti Omar orcid id orcid.org/0000-0002-1281-9254 ; Faculty of Mechanical and Manufacturing Engineering Technology, Universiti Teknikal Malaysia Melaka,Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
Suhana Binti Mohamed ; Faculty of Business Management, Universiti Teknologi Mara Johor, Kampus Pasir Gudang, Jalan Purnama, Bandar Seri Alam, 81750, Masai, Malaysia
Yusliza Binti Yusuf orcid id orcid.org/0000-0001-8772-4041 ; Faculty of Mechanical and Manufacturing Engineering Technology, Universiti Teknikal Malaysia Melaka,Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
Toibah Binti Abdul Rahim ; Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
Zaleha Binti Mustafa ; Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
Syahriza Binti Ismail orcid id orcid.org/0000-0003-3448-7649 ; Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia
Ilyani Akmar Binti Abu Bakar ; School of Civil Engineering, College of Engineering, Universiti Teknologi Mara, 40450, Shah Alam, Selangor, Malaysia
Santirraprahkash Selvamani ; Department of Mechanical Engineering, Toyohashi University of Technology, 1-1 Tempaku-Cho, Toyohashi, Aichi 441-8580, Japan

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Abstract

Current attention has focused on the preparation of thick ceramic coating of nano­structured materials as feedstock material using the thermal spray process. The cold spray method has appeared as a promising process to form ceramic nanostructured coating without significantly changing the microstructure of the initial feedstock materials due to its low processing temperature. However, deposition of ceramic powders by cold spray is not easy due to the brittle characteristics of the material. In this study, TiO2 coatings were deposited on unannealed stainless steel substrates and substrates that were annealed from room temperature to 700 °C prior to spraying. The adhesion strength was evaluated to investigate the bonding mechanism. The influence of the remaining surface oxide layer of chromium oxide, Cr2O3, which is thermodynamically preferred for stainless steel, on the bonding mechanism involved was investigated. The results showed that by increasing the annealing substrate temperature of stainless steel, the adhesion strength of the coatings (thicker oxide) is also increased. As a result, the bonding between the cold-sprayed TiO2 particle and the steel substrate is given by the chemical bonding of an inter-oxide reaction.

Keywords

bonding mechanism, chromium oxide, TiO2 coatings, adhesion strength

Hrčak ID:

283619

URI

https://hrcak.srce.hr/283619

Publication date:

18.9.2022.

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