Title: Effect of PH on the development of superhydrophobic coating on stainless steel

Authors: Vipul Kumar Mishra; Ravi Shankar Raman

Addresses: Department of Mechanical Engineering, AKTU University, Uttar Pradesh, India ' Department of Mechanical Engineering, IMS Engineering College, Uttar Pradesh, India

Abstract: In this research, nano-composite coatings were electrically co-deposited on AISI 304 using a Watts bath with two distinct ceramic particles (ZnO and TiO₂) without the use of any surfactants to develop nano-composite coatings with improved hardness and hydrophobic property. The influence of electro co-deposition process parameters was tuned, and the main focus was on the variation of properties by the changing of pH. In this paper two pH 3.5 and 4.0 are used and tried to study the comparative results. The coating hardness was found to be directly impacted by the kind of ceramic dispersions on different pH, with TiO₂ dispersion producing the highest value at pH 4.0, followed by ZnO at 4.0 pH. Also, the superhydrophobic property was measured using a contact angle test and found that Ni-TiO₂ coating with pH 4.0 has the highest contact angle of 149±2 degrees.

Keywords: nanocomposite; super hydrophobic; coatings; contact angle; electro co-deposition; zinc oxide; ZnO; titanium dioxide; TiO₂.

DOI: 10.1504/IJMATEI.2024.138605

International Journal of Materials Engineering Innovation, 2024 Vol.15 No.2, pp.143 - 156

Received: 02 Aug 2022
Accepted: 01 Jan 2023
Published online: 15 May 2024 *

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