Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 20    No. 6    June 2010

[PDF Download]        

    

Improvement of surface corrosion resistance for magnesium alloy by combining thermal spray and cast-infiltration
ZHANG Zhong-li(张忠礼), DING Yong(丁 勇), WANG Xin(王 鑫),
YANG Guo-qiang(杨国强), SHEN Wei-wei(沈威威), HAN Hai-ling(韩海玲)

School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

Abstract:The present work focuses on a new method combining cast-infiltration with thermal spraying technology to improve the surface corrosion resistance of magnesium alloy. A zinc-based alloy layer was fabricated on the surface of AZ91D magnesium alloy. The microstructure of the layer was characterized by scanning electron microscopy equipped with an energy dispersive X-ray spectroscopy (EDS). The phase constituent of these alloys was identified by X-ray diffractometry (XRD). The analysis results reveal that a zinc-based alloy layer with a thickness of 700 μm can form on the surface of AZ91 alloy matrix. The layer is composed of Mg7Zn3, MgZn and a small amount of α-Mg solid solution. The results indicate that the corrosion-resistance of the specimen with a zinc-based alloy layer is much better than that of the specimen without the layer after being immersed in 5% NaCl solution for 240 h, and the layer is more protective for the AZ91 alloy.

 

Key words: arc spraying; cast-infiltration; magnesium alloy; corrosion resistance

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com