Analysis of crystallite size changes in a hematite and magnetite formed on steel used in the power idustry

Monika Gwoździk




Abstract

The paper presents results of studies on the crystallite sizes of oxide layer formed during a long-term operation on 10CrMo9-10 steel at an elevated temperature (T = 545° C, t = 200,000 h). This value was determined by a method based on analysis of the diffraction line profile, according to a Scherrer formula. The oxide layer was studied on a surface and a cross-section at the outer and inner site on the pipe outlet, at the fire and counter-fire wall of the tube. X-ray studies were carried out on the surface of a tube, then the layer’s surface was polished and the diffraction measurements repeated to reveal differences in the originated oxides layer.


Keywords:

10CrMo9-10 steel, hematite, magnetite, X-ray diffraction, crystallite sizes


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Published
2017-11-06

Cited by

Gwoździk, M. (2017). Analysis of crystallite size changes in a hematite and magnetite formed on steel used in the power idustry. Technical Sciences, 21(1), 65–73. https://doi.org/10.31648/ts.2717

Monika Gwoździk 








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