Effect of electrolyte on mechanical properties of AZ31B Mg alloy in electrolytic plasma processing

被引：6

作者：

Ahn, Byung Hyun ^{[1
]}

Song, Jung Il ^{[2
]}

Koo, Bon Heun ^{[1
]}

机构：

[1] Changwon Natl Univ, Sch Nano & Advace Mat Engn, Chang Won 641773, South Korea

[2] Changwon Natl Univ, Dept Mech Engn, Chang Won 641773, South Korea

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷

基金：

新加坡国家研究基金会;

关键词：

AZ31B Mg alloy; surface treatment; electrolytic plasma processing; MICRO-ARC OXIDATION; MAGNESIUM ALLOY; COATINGS; CORROSION; SILICATE; AZ91D; FLUORIDE; GROWTH;

D O I：

10.1016/S1003-6326(14)63298-2

中图分类号：

TF [冶金工业];

学科分类号：

080601 [冶金物理化学];

摘要：

Coatings on Mg alloys were prepared using NaOH + Na2SiO3 as basic electrolyte containing electrolyte of Na2SiF6 or NaF. EPP treatment was carried out on AZ31 Mg alloys matrix under a hybrid voltage of AC of 200 V combined with DC of 260 V for 30 min. Structural and morphological analyses of ceramic coatings were analyzed by XRD and SEM. Wear and hardness of coatings were measured by pin-on disk test and Vickers hardness test. The coatings formed in Na2SiF6 and NaF electrolytes were mainly composed of MgO and Mg2SiO4. The measured micro-hardness of coating formed in Na2SiF6 electrolyte was found to be over HV 1100, while, coating formed in NaF electrolyte possessed micro-hardness of HV similar to 900. These results show that the mechanical properties of AZ31B Mg alloys can be enhanced by the proper selection of electrolyte agent.

引用

页码：S125 / S128

页数：4

共 17 条

[1]

The role of the magnesium industry in protecting the environment [J].