Effect of process parameters on the morphology and size of spray-dried granule powder for fabrication of SiAlON raw material

Jae Hyeong Choi, Soyul Lee, Yoonsoo Han, Sung Min Lee, Sahn Nahm, Seong Won Kim

Research output: Contribution to journalArticle

Abstract

SiAlON-based ceramics are some of the most typical ceramic materials used as cutting tools for HRSA(Heat Resistant Super-Alloys). SiAlON can be fabricated using ceramic processing, such as mixing, granulation, compaction, and sintering. Spray drying is a widely-used method for producing a granular powder of controlled morphology and size with flowability. In this study, we report a systematic investigation aimed at optimizing spherical granule morphology by controlling spray-drying parameters such as gas flow and feed rate. Before spray drying, the viscosities of the raw material slurries were also optimized with the amount of dispersant added.

Original languageEnglish
Pages (from-to)716-721
Number of pages6
JournalKorean Journal of Materials Research
Volume27
Issue number12
DOIs
Publication statusPublished - 2017 Dec 1

Keywords

  • Granule powder
  • SiAlON
  • Spherical morphology
  • Spray drying
  • Spray-drying parameter

ASJC Scopus subject areas

  • Materials Science(all)

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