Quantification of crystalline fraction of solid slag film using X-ray powder diffraction

Changlin Yang; Guanghua Wen; Ping Tang; Chaochao Xi; Qihao Sun

doi:10.1017/S0885715615000986

Quantification of crystalline fraction of solid slag film using X-ray powder diffraction

Published online by Cambridge University Press: 17 February 2016

Changlin Yang ,

Guanghua Wen ,

Ping Tang ,

Chaochao Xi and

Qihao Sun

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Changlin Yang*: Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Guanghua Wen: Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Ping Tang: Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Chaochao Xi: Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
Qihao Sun: Affiliation:
College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China
*: a)Author to whom correspondence should be addressed. Electronic mail:[email protected]

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Abstract

This paper introduces a new method to determine the crystalline fraction in samples containing amorphous phases from experimental X-ray diffraction data. Computer generated codes, one for each measured data point, are used to interpret the pattern as to where diffraction peaks exist and what is the angular breadth of each peak's intensity above background. Two parameters are defined that are used to identify the position and intensity of the crystalline phase diffraction peaks. For mold fluxes used in continuous casting, the crystalline fraction of solid slag film is a key factor that can affect heat transfer between solidified shell and mold. In this work, a new method was developed to determine the crystallinity of solid slag films. This method does not require structure parameters or other references, and results can be obtained directly by reading a text file with diffraction data. Results indicate that, there is a positive correlation between crystalline fraction and integrated intensities corresponding to crystalline phases. The selection of integration interval does not have much effect on results. To simplify computations, 20–45°2θ was considered as an appropriate interval.

Keywords

mold flux solid slag film crystalline fraction X-ray diffraction quantification

Type: Technical Articles
Information: Powder Diffraction , Volume 31 , Issue 1 , March 2016 , pp. 40 - 51

DOI: https://doi.org/10.1017/S0885715615000986 [Opens in a new window]
Copyright: Copyright © International Centre for Diffraction Data 2016

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Quantification of crystalline fraction of solid slag film using X-ray powder diffraction

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