Fabricating an anti-corrosion carbonate coating on Mg-Li alloy by low-temperature plasma

Li, YuchenXi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (författare)

QC 20220531
Despite the huge demand for ultra-light magnesium-lithium (Mg-Li) alloys, practical applications of Mg-Li alloys are still severely restricted due to their poor corrosion resistance. Here, we report a new method utilizing low-temperature plasma to grow an oxide layer on the Mg-Li alloys in atmospheric condition, which reacts with CO2 and water in the air and consequently transform into a protective coating. The prepared coating has a layered structure consisting of a Mg(OH)(2) inner layer and a Li2CO3 outer layer. The composition distribution can be attributed to the different migration rates between Li+ and Mg2+ during coating formation. The Li2CO3 outer layer is sufficiently compact and very stable, with an ultra-low solubility in water, explaining the superior corrosion resistance of the coating in 3.5% NaCl solution. This simple and eco-friendly surface treatment provides a novel way of fabricating protective coatings on Mg-Li alloys.

Kang, ZhenweiXi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (författare)
Zhang, XiaokeXi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (författare)
Pan, Jinshan,1962-KTH,Yt- och korrosionsvetenskap(Swepub:kth)u17ks6cf (författare)
Ren, YingXi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (författare)
Zhou, GenshuXi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. (författare)
Xi An Jiao Tong Univ, Ctr Adv Mat Performance Nanoscale CAMP Nano, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.Yt- och korrosionsvetenskap (creator_code:org_t)

Av författaren/redakt...: Li, Yuchen; Kang, Zhenwei; Zhang, Xiaoke; Pan, Jinshan, 19 ...; Ren, Ying; Zhou, Genshu

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Kemiteknik; och Korrosionsteknik

MEDICIN OCH HÄLSOVETENSKAP: MEDICIN OCH HÄLS ...; och Klinisk medicin; och Radiologi och bi ...

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