Pitting corrosion of electrodeposited aluminum-manganese alloys

Article abstract of DOI:10.1149/1.2220910

The corrosion behavior of a series of electrodeposited Al-Mn alloys has been investigated. Three different microstructures were examined. A supersaturated face-centered cubic (fcc) structure was produced with up to 5 atomic percent (a/o) Mn. Deposits containing 5-22 a/o Mn were composed of a glassy phase in combination with a supersaturated (1 a/o Mn) fcc phase, while alloys with 22-26 a/o Mn were single-phase metallic glasses. The pitting characteristics of these materials, in aqueous chloride solutions, were controlled by the alloy microstructure. Relative to aluminum, a 250 to 400 mV increase in the pitting potential was observed for the single-phase Al-Mn alloys. In contrast, the dual-phase material exhibited pitting potentials closer to that of aluminum due to selective pitting of the (1 a/o Mn) fcc phase. The enhanced pitting resistance of single-phase Al-Mn alloys is remarkable in view of the reactive nature of elemental manganese.

Full text of DOI:10.1149/1.2220910

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).

Downloaded on 2015-03-10 to IP 157.182.150.22 address. Redistribution subject to ECS terms of use (see ecsdl.org/site/terms_use) unless CC License in place (see abstract).