Growth kinetics and mechanism of microarc oxidation coating on Ti-6Al-4V alloy in phosphate/silicate electrolyte

作     者：Dajun Zhai Tao Qiu Jun Shen Keqin Feng Dajun Zhai;Tao Qiu;Jun Shen;Keqin Feng

作者机构：College of Materials Science and EngineeringChongqing UniversityChongqing 400044China School of Mechanical EngineeringSichuan UniversityChengdu 610065China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2022年第29卷第11期

页      面：1991-1999页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by China Postdoctoral Science Foundation (No.2021M700569) Chongqing Postdoctoral Science Foundation (No.cstc2021jcyj-bsh0133) 

主　　题：microarc oxidation titanium alloy phosphate silicate growth kinetics growth mechanism 

摘      要：Microarc oxidation(MAO)is an effective surface treatment method for Ti alloys to allow their application in extreme ***,binary electrolytes consisting of different amounts of sodium phosphate and sodium silicate were designed for *** surface morphology,composition,and properties of MAO coatings on Ti-6Al-4V alloy treated in 0.10 mol/L electrolyte were investigated to reveal the effect of PO_(4)^(3-)and SiO_(3)^(2-)ray diffraction,and potentiodynamic *** results showed that PO_(4)^(3-)is beneficial for generating microarcs and forming pores within the coating,resulting in a thick but porous ***_(3)^(2-)eration of microarcs,resulting in a thin dense *** thickness,density,phases content,and polarization resistance of the MAO coatings are primarily affected by the intensity of microarcs for low SiO_(3)^(2-)ciently *** thickness of MAO coatings obtained in P/Si electrolytes shows a piecewise linear increase with increasing process time during the three stages of microarc ***_(3)^(2-)discharge,but slows down the growth of the coating formed in the next stage.