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has been cited by the following article:

• TITLE: Oxidation Studies of T-91 and T-22 Boiler Steels in Air at 900°C

  AUTHORS: Dinesh Gond, Vikas Chawla, D. Puri, S. Prakash

  KEYWORDS: Hot corrosion; T-91; T-22

  JOURNAL NAME: Journal of Minerals and Materials Characterization and Engineering, Vol.9 No.8, August 20, 2010

  ABSTRACT: The oxidation behaviour of T-91 steel and T-22 steel in air has been studied under isothermal conditions at a temperature of 900°C in a cyclic manner. Oxidation kinetics was established for the T-91 steel and T-22 steel in air at 900°C under cyclic conditions for 50 cycles by thermogravimetric technique. Each cycle consisted of 1 hour heating at 900°C followed by 20 min of cooling in air. T-91 steel sample followed somewhat linear rate of oxidation while T-22 sample followed the parabolic rate law of oxidation. X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive X-ray (SEM/EDAX) techniques were used to characterise the oxide scales. T-91 steel was found to be more corrosion resistance than T- 22 steel in air oxidation for 50 cycles.