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纳米Si3N4 TC4钛合金微弧氧化层微观结构和性能的影响
引用本文:高巍,刘江南,丁智松,张勇,要玉宏,杨巍. 纳米Si3N4 TC4钛合金微弧氧化层微观结构和性能的影响[J]. 稀有金属材料与工程, 2022, 51(5): 1537-1542
作者姓名:高巍  刘江南  丁智松  张勇  要玉宏  杨巍
作者单位:西安工业大学,西安工业大学,西安工业大学,西安工业大学,西安工业大学,西安工业大学
基金项目:Natural Science Foundation of China (52071252) and Key Research and Development Program of Shaanxi Province (2021ZDLSF03-11 and 2021GY-208).
摘    要:在基电解液中加入氮化硅纳米颗粒,对TC4钛合金进行微弧氧化(MAO)处理,研究了Si3N4浓度对微弧氧化层表面形貌、耐蚀性和耐磨性的影响。添加Si3N4的MAO层呈现多孔结构,当Si3N4浓度为1 g/L时,涂层厚度最大,且经过7 d的酸腐蚀试验,该涂层的耐蚀性良好,腐蚀速率最低,约为0.057 mg·cm-2·d-1。随着Si3N4的加入,MAO涂层的抗菌性能先升高后降低。当Si3N4的添加量为1 g/L时,该MAO层的抗菌性能最好。Si3N4的加入能明显提高涂层在模拟海水中的耐磨性。当Si3N4的添加量为3和4 g/L时,所得涂层的摩擦系数低且稳定,且添加3 g/L Si3N4制备来的MAO涂层表现出优异的耐磨性。

关 键 词:TC4钛合金  微弧氧化  Si3N4纳米颗粒  微观结构  性能
收稿时间:2021-08-27
修稿时间:2021-11-17

Influence of Si3N4 Nanoparticles on Microstructure and Properties of Microarc Oxidation Coatings on TC4 Alloy
Gao Wei,Liu Jiang Nan,Ding Zhi Song,Zhang Yong,Yao Yu Hong and Yang Wei. Influence of Si3N4 Nanoparticles on Microstructure and Properties of Microarc Oxidation Coatings on TC4 Alloy[J]. Rare Metal Materials and Engineering, 2022, 51(5): 1537-1542
Authors:Gao Wei  Liu Jiang Nan  Ding Zhi Song  Zhang Yong  Yao Yu Hong  Yang Wei
Abstract:TC4 titanium alloy was treated by microarc oxidation (MAO) with Si3N4 nanoparticles into the base electrolyte. The effect of the Si3N4 content on the surface morphology, corrosion resistance, and wear resistance of the coatings was studied. The results show that MAO coatings with Si3N4 addition present the porous structure, and the coating is the thickest as the Si3N4 content is 1 g/L. The coating with the addition of 1 g/L Si3N4 after acid corrosion test for 7 d shows excellent corrosion resistance with the lowest corrosion rate of about 0.057 mg·cm-2·d-1. With the addition of Si3N4, the antibacterial property of MAO coatings is firstly increased and then decreased, which is optimal when the Si3N4 addition is 1 g/L. The Si3N4 addition can obviously enhance the wear resistance of the coatings in the simulated seawater. When the Si3N4 addition is 3 and 4 g/L, the friction coefficient of MAO coatings is low and stable. In addition, MAO coating with the addition of 3 g/L Si3N4 shows the excellent wear resistance.
Keywords:TC4 alloy  microarc oxidation  Si3N4 nanoparticles  microstructure  properties
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