Abstract
A novel tandem technique consisting of gradient bias voltage (GBV) and arc enhanced glow discharge (AEGD) was applied to tailor the growth structure, wear, and corrosion properties of TiN coatings. TiN coating without the GBV + AEGD exhibited a loose growth microstructure, which significantly degraded its barrier capacity and toughness resulting in poor resistance to wear and corrosion. The GBV + AEGD tandem technique significantly improved the densities, H/E, and H3/E2 ratios of the growth microstructure. These refined microstructures had strong barrier capacities and toughnesses, which led to significant enhancements in corrosion and wear resistance. The density, H/E, and H3/E2 ratios of TiN coatings gradually increased with increasing GBV times. TiN coating with the longest GBV showed better anti-wear and anti-corrosion performances.
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