The oxygen potential on the scale surface of alloys at high temperature oxidation

• Main Authors: Kawamura, Kenichi, Ani, Mohd Hanafi, Ueda, Mitsutoshi, Maruyama, Toshio
• Format: Article
• Language: English
• Published: The Japan Society of Calorimetry and Thermal Analysis 2010
• Subjects: TA401 Materials of engineering and construction
• Online Access: http://irep.iium.edu.my/23671/1/the_oxygen_potential_on_the_scale_surface_of_alloys_at_high_temperature_oxidation.pdf; http://irep.iium.edu.my/23671/; http://www.netsu.org/JSCTANewEnglish/

The driving force of the oxide scale growth on alloy is the difference in the oxygen potential between at the alloy/scale and the scale/atmosphere interfaces. When the mass transport in the oxide scale controls the growth of the oxide scale, we usually regards the oxygen potential at the scale/atmosphere interface as that of atmosphere. On the other hands, when the gas supply or the reaction controls the growth, the oxygen potential at the scale/atmosphere interface is different from that of atmosphere. This paper introduces the direct measurement for the oxygen potential on the scale surface.