表面技术2018，Vol.47Issue(1)：85-91,7.DOI:10.16490/j.cnki.issn.1001-3660.2018.01.014
Ti2AlNb合金微弧氧化电解液优化及耐磨性研究
Optimization of Micro-arc Oxidation Electrolyte for Ti2AlNb Alloy and Wear Resistance of Coatings
摘要
Abstract
The work aims to optimize micro-arc oxidation (MAO) electrolyte formula for Ti2AlNb alloy and improve wear resistance of MAO coatings on Ti2AlNb alloy. Effects of Na2MoO4concentration on morphology, element composition and phase structure of MAO coatings on Ti2AlNb alloy were investigated in silicate-phosphate electrolyte system by virtue of SEM, EDS and XRD. Friction and wear properties of MAO coatings were tested with ball-disc wear tester. After the addition of Na2MoO4in the electrolyte, growth rate of MAO coatings increased, Mo element appeared on the MAO coatings and Mo con-tent increased gradually. Friction coefficient and volume wear rate of MAO coatings were reduced as Na2MoO4was added in the electrolyte. However, the wear resistance of MAO coatings did not increase linearly with the increase of Na2MoO4content.In the system with 6 g/L Na2MoO4, the friction coefficient of MAO coating reduced to nearly 0.25, and the volume wear rate was only 1.20×10?3mm3/(N·m), and the surface featured in slight abrasive wear. Na2MoO4in the electrolytes participates in the film-forming process, plays an important role in promoting growth of MAO coatings on Ti2AlNb alloy and can effectively im-prove its wear resistance.关键词
Ti2AlNb合金/微弧氧化/Na2MoO4/耐磨性Key words
Ti2AlNb alloy/micro-arc oxidation/Na2MO4/wear resistance分类
矿业与冶金引用本文复制引用
刘欢欢,王帅星,刘小辉,赵晴,余丽霞,高傲,钟宏..Ti2AlNb合金微弧氧化电解液优化及耐磨性研究[J].表面技术,2018,47(1):85-91,7.基金项目
轻合金加工科学与技术国防重点学科实验室开放基金(gf201501002) （gf201501002）
江西省教育厅科学技术项目(GJJ160712) （GJJ160712）
国家自然科学基金(51361025)Open Foundation of National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology (gf201501002 ), Science and Technology Project of Education Ministry of Jiangxi Province (GJJ160712) and National Natural Science Foundation of China (51361025) （51361025）
