Effect of long period stacking ordered structure on the biocorrosion resistance and osteogenesis ability of Mg-Zn-Y-Mn alloys

被引：3
|
作者：
Tian, Jing [1 ]
Yang, Ge [3 ]
Lei, Zehua [4 ]
Huang, Jiehua [5 ]
Zhang, Zhiwen [5 ]
Xie, Jianhui [2 ]
机构：
[1] Hunan Childrens Hosp, Dept Ophthalmol, Changsha 410006, Hunan, Peoples R China
[2] Hunan Childrens Hosp, Dept Nursing, Changsha 410006, Hunan, Peoples R China
[3] Hunan Childrens Hosp, Dept Orthoped Surg, Changsha 410006, Hunan, Peoples R China
[4] Southern Med Univ, Guangdong Prov Peoples Hosp, Guangdong Acad Med Sci, Dept Orthoped, Guangzhou 510080, Peoples R China
[5] Huizhou Cent Peoples Hosp, Inst Orthopaed, Huizhou 516001, Guangdong, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 347卷
关键词：
Magnesium alloys; Long period stacking ordered; Corrosion resistance; Osteogenesis; DEGRADATION; CORROSION;
D O I：
10.1016/j.matlet.2023.134606
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microstructure, biocorrosion resistance, and osteogenesis performances of as-cast Mg-Zn-Y-Mn alloys with different volume fraction of long period stacking ordered (LPSO) structure are investigated. 18R-LPSO phase can be formed in Mg-1Zn-2Y-0.5Mn (ZWM120), Mg-2Zn-4Y-0.5Mn (ZWM240) and Mg-4Zn-8Y-0.5Mn (ZWM480) alloys, and their volume fraction increases with the elevating Zn and Y content. The micro-galvanic effect between cathodic LPSO and anodic & alpha;-Mg dominate the corrosion mechanism of the three alloys, resulting in the accelerating corrosion rate with the increasing volume fraction of LPSO phase in Hank's solution. With least LPSO phase, ZWM120 exhibits best cytocompatibility and osteogenic differentiation ability in rat bone marrow stem cells, suggesting that few Zn and Y addition is more potential for orthopedic applications.
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页数：4
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