Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 824, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.153832
Keywords
Magnesium alloy; Corrosion resistance; Biocompatibility; Ion implantation
Categories
Funding
- National Science Foundation (NSF) of China [11675014]
- Ministry of Science and Technology of China [2013Y Q030595-3]
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Magnesium alloys have been considered to be favorable biodegradable metallic materials used in orthopedic and cardiovascular applications. We introduce NH2+ to the AZ31 Mg alloy surface by ions implantation at the energy of 50 keV with doses ranging from 1 x 10(16) ions/cm(2) to 1 x 10(17) ions/cm(2) to improve its corrosion resistance and biocompatibility. Surface morphology, mechanical properties, corrosion behavior and biocompatibility are studied in the experiments. The analysis confirms that the modified surface with smoothness and hydrophobicity significantly improves the corrosion resistance and biocompatibility while maintains the mechanical property of the alloy. (C) 2020 Elsevier B.V. All rights reserved.
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