期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 34, 页码 28967-28979出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b05773
关键词
magnesium alloy; oxide layer; acceptor; donor; electrochemistry
资金
- National Research Foundation, Ministry of Education, Republic of Korea [NRF-2017R1D1A1A09000921]
- National Research Foundation of Korea [22A20130000202] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The electrochemical roles of electron-donor and-acceptor agents in surface reforming of magnesium alloy were investigated via plasma electrolysis. The surface modification was performed in an aluminate-based electrolyte, having urea and hydrazine with inherent molecular structures, which might act as electron acceptor and donor during plasma assisted electrochemical reaction. The presence of hydrazine working as donor would promote the formation of magnesium aluminates in the-oxide layer, resulting in superior compactness of the oxide:layer to that when urea was used as the working as acceptor since the precipitation of MgCO3 was favored in the electrolyte with urea. The thickness of the oxide layer formed by a combination of urea and hydrazine was higher than urea, while the porosity was higher than hydrazine. The electrochemical performance was enhanced in the order of hydrazine, urea and hydrazine combined, and urea, which was discussed on the basis of impedance interpretation.
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