Bulk Al-Al9Co2 alloys: Microstructure, corrosion behavior and hydrogen evolution kinetics

被引：5

作者：

Palcut, Marian ^{[1
]}

Tomsova, Romana ^{[1
]}

Priputen, Pavol ^{[1
]}

Gerhatova, Zaneta ^{[1
]}

Sahul, Martin ^{[1
]}

Kusy, Martin ^{[1
]}

机构：

[1] Slovak Univ Technol Bratislava, Fac Mat Sci & Technol Trnava, J Bottu 25, Trnava 91724, Slovakia

来源：

CORROSION SCIENCE | 2023年 / 222卷

关键词：

Aluminum; Cobalt; Intermetallics; Polarization; Alkaline corrosion; ALUMINUM-ALLOYS; RAPID SOLIDIFICATION; AL; GENERATION;

D O I：

10.1016/j.corsci.2023.111409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two Al alloys with 1 and 3 at% Co were prepared by arc-melting of Al and Co in argon. The corrosion behavior of the as-cast alloys was studied in a NaOH aqueous solution (0.01 M). Furthermore, a hydrogen evolution was investigated by volumetric measurements. The results were compared with pure Al. The alloy with 1% Co was the least corrosion resistant and evolved most hydrogen. The presence of Al9Co2 in the eutectic facilitated hydrogen evolution and contributed to corrosion activation. The results can be used for the design of Al-Co alloys for hydrogen generation.

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页数：12

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