Effect of sintering temperature in preparation of granular ceramic filter

Hyun Jin Choi, Jeong Uk Kim, Hyun Sang Kim, Sung Hyun Kim, Myong Hwa Lee

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Abstract Ceramic filters are quite an efficient component for hot gas filtration due to their high collection efficiency and high thermal durability. Among the various steps to fabricate a ceramic filter, sintering is one of the most important processes. In this study, disk-type ceramic filters were prepared at various sintering temperatures, and the effect of sintering temperature on physical/chemical properties and filtration performance were investigated. We found that the sintering temperature strongly influenced the physical and chemical properties as well as the filtration performance of a ceramic filter. The adhesive force among powders and the oxidation degree of Si species are more important parameters to determine the mechanical strength of a ceramic filter than other physical properties. Filters prepared at sintering temperatures lower than 1450°C have low mechanical strength due to insufficient binding energy among powders, and filters prepared at sintering temperatures higher than 1500°C also have low mechanical strength due to the oxidation of SiC to SiO<inf>2</inf>. However, ceramic filters sintered at 1350°C and 1400°C achieve a better filter quality factor than other filters, even though they have lower mechanical strength. Therefore, both mechanical strength and filter quality factor should be considered to choose a better ceramic filter.

Original languageEnglish
Article number10497
Pages (from-to)10030-10037
Number of pages8
JournalCeramics International
Issue number8
Publication statusPublished - 2015 Sep 1


  • Granular ceramic filter
  • Hot gas cleaning
  • Silicon carbide
  • Sintering temperature

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

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