Effect of SiO_(2) Nanoparticles/Silicate on Characteristics of Micro-arc Oxidation Coating Formed on TC4 Alloy

作     者：Sun Fengyu Yang Zhao Hu Jie Gong Yunbai Wang Ping Luo Qiming Zhu Manlan 孙枫宇;杨钊;胡杰;龚云柏;王平;罗启铭;朱满兰

作者机构：School of New Energy and MaterialsSouthwest Petroleum UniversityChengdu 610500China State Key Laboratory of Low-carbon Smart Coal-fired Power Generation and Ultra-clean EmissionNanjing 210046China 

出 版 物：《稀有金属材料与工程》 (Rare Metal Materials and Engineering)

年 卷 期：2025年第54卷第1期

页      面：76-83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：Sichuan Science and Technology Program(2022YFSY0018) 

主　　题：micro-arc oxidation TC4 alloy coatings corrosion wea 

摘      要：TC4 micro-arc oxidation(MAO)coatings were prepared by adding SiO_(2) nanoparticles or sodium silicate to the sodium meta-aluminate-based *** effect of additives was investigated by XRD,SEM,EDS,electrochemical and wear *** results show that additives can considerably accelerate the formation of MAO *** coatings are mostly composed of rutile and anatase TiO_(2),α-Al_(2)O_(3),γ-Al_(2)O_(3),Al_(2)TiO_(5) and SiO_(2).Sodium silicate and SiO_(2) nanoparticles added to the coating can effectively reduce the size of micropores and increase its thickness,whereas SiO_(2) nanoparticles with superior physical properties can be directly deposited at the discharge channel,significantly increasing the coating s resistance to wear and *** coating with SiO_(2) nanoparticles exhibits the best overall performance,with the lowest corrosion rate and average friction coefficient of 4.095×10^(-5)mm/a and 0.30,respectively.