Growth characteristics of scanning micro-arc oxidation coating on Ti6Al4V alloy

被引：8
|
作者：
Wang, Ye [1 ,2 ,3 ]
Shen, Jie [1 ,2 ,3 ]
Wu, Guolong [1 ,2 ,3 ,4 ,5 ,6 ]
Yao, Jianhua [1 ,2 ,3 ,4 ,5 ,6 ]
机构：
[1] Zhejiang Univ Technol, Inst Laser Adv Mfg, Hangzhou, Peoples R China
[2] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou, Peoples R China
[3] Zhejiang Univ Technol, Collaborat Innovat Ctr High End Laser Mfg Equipmen, Hangzhou, Peoples R China
[4] Zhejiang Univ Technol, Inst Laser Adv Mfg, Hangzhou 310014, Peoples R China
[5] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Peoples R China
[6] Zhejiang Univ Technol, Collaborat Innovat Ctr High End Laser Mfg Equipmen, Hangzhou 310014, Peoples R China
来源：
SURFACE ENGINEERING | 2023年 / 39卷 / 02期
基金：
中国国家自然科学基金;
关键词：
SMAO; titanium; growth; characteristics; discharge; PLASMA ELECTROLYTIC OXIDATION; OXIDE COATINGS; TITANIUM; BEHAVIOR; SURFACE; MICROSTRUCTURE; CHEMISTRY; MECHANISM; IMPROVE;
D O I：
10.1080/02670844.2023.2207930
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, the ceramic coating was prepared on Ti6Al4V alloy by scanning micro-arc oxidation (SMAO). The growth features of SMAO coating were investigated by combining the voltage and discharge variation. The result shows that a higher working voltage is obtained during SMAO treatment owing to additional resistance from the electrolyte column. As the SMAO goes on, the discharge region moves to the electrolyte column edge, exhibiting an annular shape. The current density with Gaussian distribution is observed between the stainless-steel tube (cathode) and titanium substrate (anode), which causes the SMAO coating to show a higher thickness in the middle and lower on both sides. Similar to traditional MAO, the SMAO coating has an enhancement in the thickness, pore size and Si content with increasing oxidation time, but coating degradation occurs in the later stage of SMAO. The SMAO coating mainly consists of amorphous SiO2, rutile and anatase phases.
引用
收藏
页码：218 / 228
页数：11
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