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- Title
Laser-Sintered Mg-Zn Supersaturated Solid Solution with High Corrosion Resistance.
- Authors
Yang, Youwen; Wang, Wei; Yang, Mingli; Yang, Yingxin; Wang, Dongsheng; Liu, Zhigang; Shuai, Cijun
- Abstract
Solid solutions of Zn as an alloy element in Mg matrixes are expected to show improved corrosion resistance due to the electrode potential being positively shifted. In this study, a supersaturated solid solution of Mg-Zn alloy was achieved using mechanical alloying (MA) combined with laser sintering. In detail, supersaturated solid solution Mg-Zn powders were firstly prepared using MA, as it was able to break through the limit of phase diagram under the action of forced mechanical impact. Then, the alloyed Mg-Zn powders were shaped into parts using laser sintering, during which the limited liquid phase and short cooling time maintained the supersaturated solid solution. The Mg-Zn alloy derived from the as-milled powders for 30 h presented enhanced corrosion potential and consequently a reduced corrosion rate of 0.54 mm/year. Cell toxicity tests confirmed that the Mg-Zn solid solution possessed good cytocompatibility for potential clinical applications. This study offers a new strategy for fabricating Mg-Zn solid solutions using laser sintering with MA.
- Subjects
SOLID solutions; CORROSION resistance; LASER sintering; MECHANICAL alloying; SUPERSATURATED solutions
- Publication
Micromachines, 2021, Vol 12, Issue 11, p1368
- ISSN
2072-666X
- Publication type
Article
- DOI
10.3390/mi12111368