The effect of temperature on the chromizing process for Ferritic-Martensitic steel

F, Farah Alia and Kurniawan, Tedi and Ani, Mohd Hanafi and Nandiyanto, Asep Bayu Dani (2017) The effect of temperature on the chromizing process for Ferritic-Martensitic steel. In: 1st International Conference on Materials Physics and Mechanics 2017, MPM 2017, 22-23 July 2017, Langkawi; Malaysia.

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Abstract

The formation of protective Cr2O3 layer was usually retarded in the high temperature steam oxidation of boiler tube materials. This condition makes the oxidation rate higher than that in dry condition. Therefore in this work, chromizing process is introduced to diffuse chromium on the surface of boiler steel so that it can act as a reservoir for the formation of Cr2O3 layer. The chromizing process was conducted on T91 steel by exposing it into alumina crucible. The crucible was exposed at different temperature (600oC-1050oC) under argon environment in the crucible that contains the chromizing mixture powder of masteralloy Cr, activator NH4Cl and filler Al2O3. It was found that Cr diffusion was happened at higher temperature and it formed Cr carbide on the surface. It also clarified that this chromizing process can prevent the retardation of Cr2O3 layer.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	4583/60666
Uncontrolled Keywords:	Alumina, Aluminum compounds, Boilers, Carbides, Chlorine compounds, Crucibles, Ferritic steel
Subjects:	T Technology > T Technology (General)
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:	28 Dec 2017 19:05
Last Modified:	10 Jul 2018 13:56
URI:	http://irep.iium.edu.my/id/eprint/60666

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