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Abstract Electrochemical measurements and microstructural analysis were performed to study the formation mechanism and corrosion behavior in mixed solution of the Ti-TiN composites produced by selective laser melting (SLM) and… Click to show full abstract
Abstract Electrochemical measurements and microstructural analysis were performed to study the formation mechanism and corrosion behavior in mixed solution of the Ti-TiN composites produced by selective laser melting (SLM) and commercially pure titanium (CP-Ti) for comparison. The Ti-TiN composites comprise α′-Ti and δ-TiN, where the acicular α′ martensite is refined compared to that in the CP-Ti. The passive film of all samples comprises TiO2, Ti2O3 and TiO. Compared to CP-Ti, the Ti-TiN composites demonstrate higher corrosion resistance, owing to the fine grains, the initial rapid passivation and the corrosion shadow protection effect of the alloyed reaction layer on the α′-Ti.
Journal Title: Journal of Alloys and Compounds
Year Published: 2021
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