期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 762, 期 -, 页码 171-183出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.05.217
关键词
Sputtering; Hydrogenated diamond-like carbon; SiNx; N+ ions implantation; Amorphous Mg alloy AZ31
资金
- National Natural Science Foundation of China [51601226]
- Open-End Fund for the Valuable and Precision Instruments of Central South University
- National Key Research and Development Program of China [2016YEB0301402]
- State Key Laboratory of Powder Metallurgy
Bilayer amorphous hydrogenated diamond-like carbon (DLC:H)/SiNx film was successfully deposited onto Mg alloy AZ31 by reactive magnetron sputtering. Etching Mg alloy AZ31 in Ar and N-2 atmosphere by radio frequency bias (Ar&N/AZ31), not only implanted N+ ions into the substrate but also changed its crystal structure into amorphous state. DLC:H/SiNx/Ar&N/AZ31 shows an increase in corrosion resistance during 120 h immersion in 3.5 wt% NaCl solution. The high corrosion resistance is attributed to combination of good barrier effect of the bilayer DLC:H/SiNx film, the self-stabilized and self-sealed ability of SiNx, and the amorphous layer of Mg alloy AZ31 surface. (C) 2018 Elsevier B.V. All rights reserved.
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