NDLI: Effect of $Si_{3}N_{4}$/TaC Particles on the Structure and Properties of Microarc Oxidation Coatings on TC4 Alloy

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Effect of $Si_{3}N_{4}$/TaC Particles on the Structure and Properties of Microarc Oxidation Coatings on TC4 Alloy

Content Provider	MDPI
Author	Gao, Wei Wang, Liqun Jin, Yaohua Yao, Yuhong Ding, Zhisong Yang, Wei Liu, Jiangnan
Copyright Year	2022
Description	$Si_{3}N_{4}$/TaC composite MAO coatings were fabricated by microarc oxidation (MAO) on a Ti–6Al–4V (TC4) alloy in a phosphate-based electrolyte containing $Si_{3}N_{4}$/TaC mixed particles. The influence of the amount of $Si_{3}N_{4}$/TaC particles on the microstructure, composition, tribological behavior, and corrosion properties of the MAO coatings has been investigated. Morphological research of the MAO coatings was carried out using scanning electron microscopy (SEM), with the surface porosity analyzed by ImageJ software. X-ray diffraction (XRD) was used for the detection of the phase characteristic of the MAO coatings, and an abrasive wear test and electrochemical measurements were conducted in the artificial seawater solution by the ball-on-disc friction tester and the electrochemical workstation, respectively. The results showed that $Si_{3}N_{4}$/TaC particles could be successfully incorporated into the composite coatings, and the addition of $Si_{3}N_{4}$/TaC particles greatly reduced the porosity of the coatings, thus improving both tribological and corrosion properties of the composite MAO coatings. The composite MAO coating with the addition of 1 g/L $Si_{3}N_{4}$ + 0.5 g/L TaC particles showed the best tribological property and the optimum corrosion properties.
Starting Page	1247
e-ISSN	20796412
DOI	10.3390/coatings12091247
Journal	Coatings
Issue Number	9
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-08-26
Access Restriction	Open
Subject Keyword	Coatings Coatings and Films Microarc Oxidation Tc4 Alloy Si3n4/tac Particles Porosity Tribological Property Electrochemical Corrosion
Content Type	Text
Resource Type	Article

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