Deposition of Ni-Al coatings by pack cementation and corrosion resistance in high temperature and marine environments

被引：35

作者：

Kourtidou, Dimitra ^{[1
]}

Chaliampalias, Dimitrios ^{[1
]}

Vogiatzis, Christos ^{[2
]}

Tarani, Evangelia ^{[1
]}

Kamou, Aikaterini ^{[1
]}

Pavlidou, Eleni ^{[1
]}

Skolianos, Stefanos ^{[2
]}

Chrissafis, Konstantinos ^{[1
]}

Vourlias, George ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Phys, GR-54124 Thessaloniki, Greece

[2] Aristotle Univ Thessaloniki, Dept Mech Engn, Phys Met Lab, Thessaloniki, Greece

来源：

CORROSION SCIENCE | 2019年 / 148卷

关键词：

metal coatings; EIS; polarization; SEM; XRD; high temperature corrosion; LOW-CARBON STEEL; OXIDATION RESISTANCE; NICKEL ALUMINIDE; BEHAVIOR; MICROSTRUCTURE; DIFFUSION; BARRIER; NI3AL; FLAME;

D O I：

10.1016/j.corsci.2018.11.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nickel aluminides are ideal materials for protective coatings because they possess high-temperature oxidation resistance and low corrosion rates in marine atmospheres. In this work, a double layered coating was formed by the electrochemical deposition of an initial Ni layer followed by an Al top layer deposited by pack cementation. The coatings were found to contain several Ni-Al on the upper areas and Ni-Fe phases on the substrate/coating interface, as a result of Ni diffusion during the aluminization step. Thermogravimetric high temperature oxidation tests and electrochemical corrosion measurements revealed significant increase of the samples' resistance, compared to the uncoated steel.

引用

页码：12 / 23

页数：12

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