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Effect of Process Parameters on the Morphology and Size of Spray-Dried Granule Powder for Fabrication of SiAlON Raw Material
- Issue Date
- 12월-2017
- Publisher
- MATERIALS RESEARCH SOC KOREA
- Keywords
- SiAlON; spray drying; granule powder; spherical morphology; spray-drying parameter
- Citation
- KOREAN JOURNAL OF MATERIALS RESEARCH, v.27, no.12, pp.716 - 721
- Indexed
- SCOPUS
KCI
- Journal Title
- KOREAN JOURNAL OF MATERIALS RESEARCH
- Volume
- 27
- Number
- 12
- Start Page
- 716
- End Page
- 721
- ISSN
- 1225-0562
- 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.
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