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

Show author details

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:yangcl@cqu.edu.cn

Article contents

Abstract
References

Get access

Rights & Permissions

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bish, D. L. and Post, J. E. (1993). “Quantitative mineralogical analysis using the Rietveld full-pattern fitting method,” Am. Mineral. 78, 932–940.Google Scholar

Cho, J. W. and Shibata, H. (2001). “Effect of solidification of mold fluxes on the heat transfer in casting mold,” J. Non-Crystal. Solids 282, 110–117.CrossRef Google Scholar

Cho, J. W., Shibata, H., Emi, T., and Suzuki, M. (1998). “Thermal resistance at the interface between mold flux film and mold for continuous casting of steels,” ISIJ Int. 38, 440–446.CrossRef Google Scholar

Fawcett, T. G., Crowder, C. E., Kabekkodu, S. N., Needham, F., Kaduk, J. A., Blanton, T. N., Petkov, V., Bucher, E., and Shpanchenko, R. (2013). “Reference materials for the study of polymorphism and crystallinity in cellulosics,” Powder Diffr. 28, 18–31.Google Scholar

Gravier, S., Donnadieu, P., Lay, S., Doisneau, B., Bley, F., Salvo, L., and Blandin, J. J. (2010). “Evaluation of the crystal volume fraction in a partially nanocrystallized bulk metallic glass,” J. Alloys Compd. 504S, S226–S229.Google Scholar

Katsumasa, Y., Yoshitake, T., and Akira, N. (1998). “Crystallinity of analysis of glass-ceramics by the rietveld method,” J. Am. Ceram. Soc. 81, 2978–2982.Google Scholar

Le Blond, J., Cressey, G., Horwell, C. J., and Williamson, B. J. (2009). “A rapid method for quantifying single mineral phase in heterogeneous natural dusts using X-ray diffraction,” Powder Diffr. 24, 17–23.Google Scholar

Luisa, B., Federica, B., Isabella, L., Cristina, L., and Monia, M. (2005). “The anorthite-diopside system: structure and devitrification study. Part II. Crystallinity analysis by the Rietveld–RIR method,” J. Am. Ceram. Soc. 88, 3131–3136.Google Scholar

Martin, J., Beauparlant, M., Lesage, J., and Tra, H. V. (2012). “Development of a quantification method for quartz in various bulk materials by X-ray diffraction and the Rietveld method,” Powder Diffr. 27, 12–19.Google Scholar

Mills, K. C., Courtney, L., Fox, A. B., Harris, B., Idoyaga, Z., and Richardson, M. J. (2002). “The use of thermal analysis in the determination of the crystalline fraction of solid slag films,” Thermochim. Acta 391, 175–184.Google Scholar

Mills, K. C., Fox, A. B., Li, Z., and Thackray, R. P. (2005). “Performance and properties of mould fluxes,” Ironmaking Steelmaking 32, 26–34.CrossRef Google Scholar

Ming, H., Mengqiang, W., Shuren, Z., Xiaohua, Z., Ting, Z., and Song, C. (2010). “Quantitative analysis of crystalline and remaining glass phases in CaO–B₂O₃–SiO₂ ternary system glass ceramics,” J. Alloys Compd. 506, 757–760.Google Scholar

Sarsfield, B. A., Davidovich, M., Desikan, S., Fakes, M., Futernik, J. L., Hilden, J. S., Tan, S., Yin, G., Young, G., Vakkalagadda, B., and Volk, K. (2005). “Powder X-ray diffraction detection of crystalline phases in amorphous pharmaceuticals,” 205, 322–327.Google Scholar

Taylor, J. C. and Rui, Z. (1992). “Simultaneous use of observed and calculated standard profiles in quantitative XRD analysis of minerals by the multiphase Rietveld method: the determination of pseudorutile in mineral sands products,” Powder Diffr. 7, 152–161.Google Scholar

Wen, G. H., Tang, T., Yang, B., and Zhu, X. B. (2012). “Simulation and characterization on heat transfer through mould slag film,” ISIJ Int. 52, 1179–1185.CrossRef Google Scholar

Yang supplementary material 16

File 48.7 KB

Yang supplementary material

Yang supplementary material 17

File 48.7 KB

Article contents

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

Abstract

Keywords

Access options

References

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Yang supplementary material

Save article to Kindle

Save article to Dropbox

Save article to Google Drive

Reply to: Submit a response

Your details

You have entered the maximum number of contributors

Conflicting interests