Increase of oxygen permeability on metal/oxide interface during high temperature oxidation of Fe-Cr alloys in water vapor at 1073 K

Ani, Mohd Hanafi and Setiawan, Asep Ridwan and Hens, Saputra and Othman, Raihan and Ueda, Mitsutoshi and Kawamura, Kenichi and Maruyama, Toshio (2010) Increase of oxygen permeability on metal/oxide interface during high temperature oxidation of Fe-Cr alloys in water vapor at 1073 K. In: 3rd International Conference on Functional Materials and Devices 2010, 13-17 June 2010, Kuala Terengganu. (Unpublished)

PDF (Increase of oxygen permeability on metal/oxide interface during high temperature oxidation of Fe-Cr alloys in water vapor at 1073K) - Accepted Version Restricted to Repository staff only Download (56kB) | Request a copy

Abstract

Many studies1-3 have shown that oxidation rates in humid environment are higher than in dry environment. The formation of Cr2O3 scale during high temperature oxidation is beneficial in protecting metals from severe oxidizing environment. A dilute solid solution, such as Fe-Cr alloy with small Cr concentrations, forms internal oxide of Cr2O3 when exposed at high temperature. Further addition of Cr in the alloy leads to the development of protective Cr2O3 scale. The oxidation of Fe-Cr alloys was conducted in a closed apparatus at 1073 K and the oxygen partial pressure of 1.1 x 10-14 Pa, which was fixed by a Fe/FeO buffer. To prepare the humid condition, Ar-5% H2 gas mixture of 3 x 104 Pa was filled in the apparatus, which provided the water vapor pressure of 3.3 x 102 Pa. The objective of this study is to evaluate the effects of water vapor to the oxygen permeability in α-Fe at 1073 K.

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	4583/4126
Uncontrolled Keywords:	oxygen permeatibility, metal/oxide
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Mohd Hanafi Ani
Date Deposited:	24 Oct 2011 16:07
Last Modified:	13 Apr 2012 11:14
URI:	http://irep.iium.edu.my/id/eprint/4126

Actions (login required)

View Item