走南闯北曲周人分享 http://blog.sciencenet.cn/u/sfguo 走在生活的路上...

博文

Atmospheric Mg-based bulk metallic glass

已有 4019 次阅读 2013-8-28 12:51 |个人分类:非晶前沿|系统分类:论文交流| metallic, glass

Atmospheric RE-free Mg-based bulk metallic glass with high bio-corrosion resistance

  • a School of Materials Science and Engineering, Southwest University, Chongqing 400715, China

  • b State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China

  • c Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China

  • d College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

  • e Chongqing Research Center for Advanced Materials, Chongqing Academy of Science and Technology, Chongqing 401123, China

Highlights


A Mg69Zn27Ca4 bulk metallic glass was successfully prepared in atmospheric air.

This glassy alloy can be fabricated using recycled materials in atmospheric air.

This glassy alloy possesses high fracture strength and good corrosion resistance.

The findings are significant as a means of reducing the cost and manufacturability.


Abstract

In this work, a rare earth (RE) free Mg69Zn27Ca4 bulk metallic glass (BMG) of diameter 1.5 mm was successfully fabricated by the injection casting method using recycled materials in atmospheric air. Without using high vacuum conditions, high purity starting materials and expensive rare earth materials, the findings of the work are of significance in reducing the cost and improving the manufacturability of BMGs. The results of the uniaxial compression tests further showed that there were no obvious differences between BMGs prepared under high vacuum or in atmospheric environment. The electrochemical polarization measurements in simulated physiological media revealed that the atmospheric Mg69Zn27Ca4 BMG manifested much lower passive current densities, higher pitting potential and a wider passive region than those of ZK60 and pure Mg alloys. The findings not only present Mg69Zn27Ca4 BMG as low cost material for potential biomedical applications, but also provide new insights into understanding of the effects of oxygen on glass formation.


http://www.sciencedirect.com/science/article/pii/S0022309313004201

 




https://blog.sciencenet.cn/blog-4773-720347.html

上一篇:Effects of cooling rate on microstructure, mechanical and
下一篇:【备用】镁合金相关国标
收藏 IP: 222.177.24.*| 热度|

0

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...
扫一扫,分享此博文

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2024-3-28 17:40

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部