4.7 Article

A crack-free anti-corrosive coating strategy for magnesium implants under deformation

期刊

CORROSION SCIENCE
卷 132, 期 -, 页码 116-124

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2017.12.030

关键词

Magnesium; Corrosion resistance; Deformation; Hard coating; Biomaterials

资金

  1. AcRF from Ministry of Education (MOE) of Singapore [2017-T1-001-246 (RG51/17)]
  2. Nanyang Technological University
  3. National Research Foundation (NRF) of Korea [2015R1D1A1A01057311]
  4. National Science Foundation (NSF) [CMMI-1362893]
  5. University of New Hampshire
  6. Div Of Civil, Mechanical, & Manufact Inn [1362893] Funding Source: National Science Foundation

向作者/读者索取更多资源

Surface patterns can be used as a selective coating platform on metal surfaces, in particular, under various deformation conditions because they induce local strain gradients along with pattern geometry. In this study, hard and flexible coating materials were introduced to regions with small and large deformations, respectively, on patterned magnesium (Mg) surfaces. Despite significant deformation, a polymer-ceramic coating on patterned Mg maintained its protection, as opposed to a ceramic coating on a flat Mg surface. Our proposed approach can be implemented in various Mg-based medical-device platforms by optimizing surface patterns on Mg depending on their loading conditions for clinical use.

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