Compaction behaviour of spray-dried silicon carbide powders

Dean-Mo LIu*, Chen Tsu Fu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Compaction behaviour and resultant green density of spray-dried silicon carbide powder were investigated using a uniaxial die-pressing technique with compaction pressure ranging from 6-8 MPa to 154 MPa. Experimental results show that the green density of the silicon carbide powder compacts behaves as a function of organic phase content, temperature, relative humidity, powder size and its distribution; the density increases with relative humidity and with organic phase content. For a given quantity of organic phases, increase in temperature reduces the compact density when the compaction pressure is relatively low. For powders of approximately the same powder size distribution, increase in the mean powder size decreases the compact density at lower pressure regions; however, a higher density is obtainable at higher compaction pressures. The elastic recovery of the compacts after removal of the pressure was recorded, which became appreciable at pressure > ∼100 MPa at temperatures below the glass transition temperature (T g ) of the organic phases.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalCeramics International
Issue number1
StatePublished - 1 Jan 1996

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