To read the full version of this content please select one of the options below:

High temperature oxidation behaviour of nickel aluminide coated mild steel

A.U. Malik (Department of Applied Chemistry, Z.H. College of Engineering and Technology Aligarh Muslim University, Aligarh 202 002 (U.P) India)
Rais Ahmad (Department of Applied Chemistry, Z.H. College of Engineering and Technology Aligarh Muslim University, Aligarh 202 002 (U.P) India)
Sharif Ahmad (Department of Applied Chemistry, Z.H. College of Engineering and Technology Aligarh Muslim University, Aligarh 202 002 (U.P) India)
Sultan Ahmad (Department of Applied Chemistry, Z.H. College of Engineering and Technology Aligarh Muslim University, Aligarh 202 002 (U.P) India)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 1 July 1991

Abstract

Nickel aluminide coatings on mild steel have been prepared by pack cementation process. The high temperature oxidation behaviour of the coatings have been studied at 750°, 800° and 850° in flowing air. The influence of different rare earth oxide addition on the oxidation rates of nickel aluminide coating on mild steel has also been investigated. The kinetic of the oxidation of nickel aluminide coating on mild steel, with or without addition of RE2O3 proceeds by a diffusion controlled mechanism as revealed by the parabolic nature of weight gain Vs time plots. At higher temperatures the oxidation rates of the nickel aluminide coatings are lowered down markedly irrespective of rare earth oxide concentration. The oxidation rates are significantly affected by the morphology of the oxide scales, in cases where the structure of oxide scales is not seriously disrupted due to decarburization, the oxidation rates are significantly reduced.

Citation

Malik, A.U., Ahmad, R., Ahmad, S. and Ahmad, S. (1991), "High temperature oxidation behaviour of nickel aluminide coated mild steel", Anti-Corrosion Methods and Materials, Vol. 38 No. 7, pp. 4-10. https://doi.org/10.1108/eb007297

Publisher

:

MCB UP Ltd

Copyright © 1991, MCB UP Limited