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http://dx.doi.org/10.3740/MRSK.2017.27.12.716

Effect of Process Parameters on the Morphology and Size of Spray-Dried Granule Powder for Fabrication of SiAlON Raw Material  

Choi, Jae-Hyeong (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
Lee, Soyul (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
Han, Yoonsoo (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
Lee, Sung-Min (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
Nahm, Sahn (Department of Materials Science and Engineering, Korea University)
Kim, Seongwon (Engineering Ceramics Center, Korea Institute of Ceramic Engineering & Technology)
Publication Information
Korean Journal of Materials Research / v.27, no.12, 2017 , pp. 716-721 More about this Journal
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.
Keywords
SiAlON; spray drying; granule powder; spherical morphology; spray-drying parameter;
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