Corrosion and Wear Properties of h-BN Modified TC4 Titanium Alloy Micro-Arc Oxide Coatings

IF 2.7 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Surface Innovations Pub Date : 2022-01-10 DOI:10.1680/jsuin.21.00070

X. W. Chen, Pengyuan Ren, D. F. Zhang, J. Hu, C. Wu, D. Liao

引用次数: 4

Abstract

In this study, ceramic coatings were prepared on the surface of TC4 titanium alloy by micro-arc oxidation (MAO). The morphology, element distribution and phase composition of MAO coatings were analyzed by SEM, EDS, XRD and other analytical methods. The effect of hexagonal boron nitride(h-BN) doping on wear resistance and corrosion resistance of micro-arc oxidation layer was studied. The results show that the coating is mainly composed of rutile TiO2, anatase TiO2 and a small amount of h-BN. Furthermore, the composite coating containing h-BN was less porous than particle-free coating. The test results show that h-BN doping slightly affects the hardness of the MAO coating, and it is helpful in improving the thickness, corrosion resistance and wear resistance of the coatings. When the amount of h-BN is 3 g/L, the corrosion current density of the coating is the smallest; When the addition of h-BN is 1.5 g/L, the friction coefficient of the coating is the smallest. The wear mechanism was adhesive wear, accompanied by slight abrasive wear.

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h-BN改性TC4钛合金微弧氧化涂层的腐蚀磨损性能

本研究采用微弧氧化法在TC4钛合金表面制备陶瓷涂层。研究了六方氮化硼(h-BN)掺杂对微弧氧化层耐磨性和耐腐蚀性的影响。结果表明，该涂层主要由金红石型TiO2、锐钛型TiO2和少量的h-BN组成。此外，含h-BN的复合涂层比无颗粒涂层的多孔性更小。当h-BN用量为3 g/L时，镀层的腐蚀电流密度最小;当h-BN的加入量为1.5 g/L时，涂层的摩擦系数最小。磨损机理为黏着磨损，并伴有轻微的磨粒磨损。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

5.80

自引率

22.90%

发文量

期刊介绍： The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.