Study on the corrosion behavior of cold sprayed aluminum-based coatings on Mg-based alloy in chloride containing solution: Effect of N2 processing gas temperature

被引：10

作者：

Daroonparvar, M. ^{[5
,6
]}

Helmer, A. ^{[2
]}

Ralls, A. M. ^{[1
]}

Kasar, A. K. ^{[1
]}

Khan, M. U. Farooq ^{[3
]}

Menezes, P. L. ^{[1
]}

Misra, M. ^{[4
]}

Shao, S. ^{[5
,6
]}

Gupta, R. K. ^{[2
]}

机构：

[1] Univ Nevada, Dept Mech Engn, Reno, NV 89501 USA

[2] North Carolina State Univ, Coll Engn, Dept Mat Sci & Engn, 911 Partners Way, Raleigh, NC 27695 USA

[3] Texas A&M Univ, Dept Nucl Engn, College Stn, TX 77843 USA

[4] Univ Nevada, Dept Chem & Mat Engn, Reno, NV 89501 USA

[5] Auburn Univ, Natl Ctr Addit Mfg Excellence, Auburn, AL 36849 USA

[6] Auburn Univ, Dept Mech Engn, Auburn, AL 36849 USA

来源：

CORROSION SCIENCE | 2023年 / 223卷

基金：

美国国家科学基金会;

关键词：

Magnesium; X-ray diffraction; EIS; Corrosion; Surface; SEVERE PLASTIC-DEFORMATION; PITTING CORROSION; MECHANICAL-PROPERTIES; COMPOSITE COATINGS; MAGNESIUM ALLOY; RESISTIVITY DISTRIBUTIONS; PURE ALUMINUM; RESISTANCE; AL; MICROSTRUCTURE;

D O I：

10.1016/j.corsci.2023.111454

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cold sprayed (CS) commercially pure Al-based coatings (processed at various propellent N2 gas temperatures) were applied on Mg-based alloys. The porosity percentage of the CS coatings decreased, and the flattening ratio increased as the N2 processing gas temperature reduced due to the effect of the in-situ tamping densification. This also led to the obvious reduction of wear rate of the CS Al-based coatings. In the present research, among the Al coated Mg alloys having higher general corrosion resistance (i.e., higher |Z|f=0.01 Hz and polarization resistance at the corrosion potential (Rpol)), a decrease in dislocation density and microstrain was postulated to lead to the improvement of overall pitting behavior of the CS Al-based coating (processed at the lowest N2 propellent gas temperature) after 12 days immersion in 3.5 wt% NaCl solution.

引用

页数：25

共 132 条

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