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A Study Of Surface Segregation And Oxidation Of Cu-Mn Alloys By X-Ray Photoelectron And Auger Spectroscopy

Hegde, MS and Kumar, Sampath TS and Mallya, RM (1983) A Study Of Surface Segregation And Oxidation Of Cu-Mn Alloys By X-Ray Photoelectron And Auger Spectroscopy. In: Applications of Surface Science, 17 (1). pp. 97-106.

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Abstract

Segregation of Mn in Cu-Mn(5%) alloy is observed in the temperature range of 520 to 700 K. The activation enthalpy of segregation is found to be about 25 kJ/mole. Surface oxidation of Cu-Mn(5%) below and above the segregation temperature shows $Cu_2O$ formation on the surface. On vacuum annealing the oxidized alloy at 670 K, the displacement reaction $Cu_2O$+Mn \rightarrow 2Cu+ MnO occurs on the surface. The oxidation behaviour of Cu-Mn(25%) is similar to that of Cu-Mn(5%).

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 14 Jul 2008
Last Modified: 19 Sep 2010 04:47
URI: http://eprints.iisc.ernet.in/id/eprint/15011

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