Author(s)

Nairu He ¹, Jintao Qiu ¹, Jie Yang ¹

Affiliation(s)

¹ College of Mechanical and Electrical Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, China

Corresponding Author

Jie Yang

ABSTRACT

This study employed atmospheric plasma spraying (APS) technology to fabricate TiO₂ coatings on 310S stainless steel substrates, systematically investigating their corrosion-wear mechanisms under dry friction, deionized water, and 5% HCl solution environments. Experimental results revealed that under high contact stress, the coatings exhibited significantly enhanced tribological performance, with stable coefficients of friction (COF) in the ranges of 0.4–0.5 (dry friction), 0.2–0.3 (deionized water), and 0.18 (5% HCl solution). Quantitative wear rate analysis demonstrated a substantial reduction in the coating's volumetric wear rates compared to the substrate, measuring 7.18×10⁻⁶ mm³/(N•m), 9.20×10⁻⁷ mm³/(N•m), and 1.59×10⁻⁶ mm³/(N•m) in the respective environments, corresponding to reductions by factors of 2.45, 1.18, and 22.58. Despite the presence of micro-pores and cracks that induced a negative shift in the open-circuit potential within Cl⁻-containing media, the dense TiO₂ coating effectively mitigated corrosive ion penetration, reduced corrosion current density, and improved corrosion resistance.

KEYWORDS

Plasma spray; TiO2; coating; tribo-corrosion

CITE THIS PAPER

Nairu He, Jintao Qiu, Jie Yang, Tribo-corrosion behaviors of plasma sprayed ceramic coating in hydrochloric acid. Journal of Materials, Processing and Design (2025) Vol. 9: 66-80. DOI: http://dx.doi.org/10.23977/jmpd.2025.090108.

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