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 journalArticlepeer-review

    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

    Bibliographical note

    Funding Information:
    This research was supported by a grant from the Industrial Strategic Technology Development Program (Grant#10067065, Development of coated hardmental/ cBN/ceramic cutting tools for machining heat resistant alloys with high hardness, utilized innovation & energy plants industry), funded by the Ministry of Trade, Industry & Energy(MOTIE) and Korea Evaluation Institute of Industrial Technology(KEIT), Republic of Korea.

    Publisher Copyright:
    © Materials Research Society of Korea.

    Keywords

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

    ASJC Scopus subject areas

    • General Materials Science

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