Characterization of crystal phase evolution in cordierite honeycomb for diesel particulate filter by using rietveld refinement and SEM-EDS methods (Rietveld 정밀화법과 SEM-EDS 분석에 의한 DPF용 코디어라이트 하니컴 세라믹스의 결정성장 과정 분석)

KiWoong Chae (채기웅); KIM KANG SAN (김강산); JeongSeog  Kim (김정석); Shin-Han Kim (김신한)

doi:10.6111/JKCGCT.2021.31.3.116

Characterization of crystal phase evolution in cordierite honeycomb for diesel particulate filter by using rietveld refinement and SEM-EDS methods

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2021, 31(3), pp.116-126
DOI : 10.6111/JKCGCT.2021.31.3.116
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering
Received : May 10, 2021
Accepted : June 4, 2021
Published : June 30, 2021

KiWoong Chae ¹, KIM KANG SAN ¹, JeongSeog Kim ¹, Shin-Han Kim ²

¹호서대학교
²(주)세라컴

Accredited

ABSTRACT

Diesel particulate filter (DPF) is a typical application field of cordierite (Mg2Al4Si5O18) honeycomb. Green body for DPF honeycomb was extruded using slurry paste and sintered at the temperature range of 980~1450°C. Quantitative crystal phase analysis was carried out by using Rietveld refinement method for powder XRD data. In conjunction with the quantitative Rietveld analysis, SEM-EDS analysis was carried for the crystal phases (indialite, cordierite, cristobalite,alumina, spinel, mullite, pro-enstatite). After removing amorphous phase on the sintered surfaces by chemical etching method, the shape and composition of the crystal phases can be clearly identified by SEM-EDS method. By combining the Rietveld refinement method and SEM-EDS analysis, crystal phase evolution process in DPF cordierite ceramics could be clarified. In addition, the coefficient of thermal expansion (CTE) of the DPF honeycombs were measured and compared with the calculated CTEs based on the quantitative crystal phase analysis results.

KEYWORDS

Crystal phase, Cordierite, Honeycomb ceramics, DPF, Quantitative rietveld refinement analysis, CTE

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Characterization of crystal phase evolution in cordierite honeycomb for diesel particulate filter by using rietveld refinement and SEM-EDS methods

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* References for papers published after 2023 are currently being built.

Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19

Characterization of crystal phase evolution in cordierite honeycomb for diesel particulate filter by using rietveld refinement and SEM-EDS methods

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