| Double glow plasma surface alloying (DGPSA) process is an effective approach to providing satisfactory surface protection and enhancement of metallic materials. DGPSA can accomplish surface alloying by both non-metallic elements and solid metallic elements as alloying elements to create a strong/gradient metallurgical bonding between the coating and the substrate. This review begins with the technological principle and processing research of DGPSA. The studies and applications of the DGPSA for improving tribological performance of TC4 titanium alloy in China are reviewed in the sight of alloying element selections. |
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