材料科学技术(英文版)2024，Vol.179Issue(12) ：26-39.DOI:10.1016/j.jmst.2023.08.056

Influence of high temperature oxidation on mechanical properties and in vitro biocompatibility of WE43 magnesium alloy fabricated by laser powder bed fusion

Jinge Liu Shuyuan Min Zijun Mao Mengran Zhou Bingchuan Liu Dazhi Liu Fei Song Peng Wen Yun Tian Yufeng Zheng
材料科学技术(英文版)2024，Vol.179Issue(12) ：26-39.DOI:10.1016/j.jmst.2023.08.056
✕
  • NETL
  • NSTL
  • 万方数据

Influence of high temperature oxidation on mechanical properties and in vitro biocompatibility of WE43 magnesium alloy fabricated by laser powder bed fusion

Jinge Liu 1Shuyuan Min 2Zijun Mao 1Mengran Zhou 3Bingchuan Liu 2Dazhi Liu 4Fei Song 5Peng Wen 1Yun Tian 2Yufeng Zheng6
扫码查看

作者信息

  • 1. The State Key Laboratory of Tribology in Advanced Equipment,Tsinghua University,Beijing 100084,China;Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China
  • 2. Department of Orthopaedics,Peking University Third Hospital,Beijing 100191,China;Engineering Research Center of Bone and Joint Precision Medicine,Ministry of Education,Beijing 100191,China
  • 3. Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China
  • 4. Tangshan Weihao Magnesium Powder Co.,Ltd.,Qian'an 064406,China
  • 5. Institute for Precision Medicine Tsinghua University,Beijing Tsinghua Changgung Hospital,Beijing 102218,China
  • 6. School of Materials Science and Engineering,Peking University,Beijing 100871,China
  • 折叠

Abstract

Laser powder bed fusion(L-PBF)has been used to fabricate biodegradable Mg implants of WE43 alloy,but the degradation is too fast compared with the term bone reconstruction.Previous studies show that high temperature oxidation(HTO)can successfully inhibit the degradation of WE43 alloy.In this work,the influence of HTO on L-PBF samples of WE43 alloy was investigated regarding tensile,compressive,and abrasive resistance,as well as in vitro cytotoxicity,cell proliferation,hemolysis,and osteogenesis.Compared with the as-built L-PBF samples,HTO increased grain size and grain texture,stabilized and coarsened precipitates,and caused discontinuous static recrystallization in the matrix.The oxide layer at the surface of the HTO samples improved surface roughness,hydrophilia,hardness,and abrasive resis-tance.The tensile strength decreased slightly from 292 to 265 MPa,while the elongation substantially increased from 10.97％to 16.58％after HTO.The in vitro cell viability,cell proliferation,hemolysis,and osteogenic effect were considerably enhanced due to the improvement of surface quality and the initial inhibition of excessive Mg2+releasement.Overall,HTO is of great benefit to the surface performance,ductility,and biocompatibility of WE43 alloy fabricated by L-PBF for biodegradable applications.

Key words

Additive manufacturing/Biodegradable metal/Magnesium alloy/WE43/High temperature oxidation

引用本文复制引用

基金项目

National Key Research and Development Program of China(2018YFE0104200)

National Natural Science Foundation of China(52175274)

National Natural Science Foundation of China(82172065)

National Natural Science Foundation of China(51875310)

Tsinghua Precision Medicine Foundation and Tsinghua-Toyota Joint Research Fund()

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
参考文献量72
段落导航相关论文