Possibility of using boric acid and glutinous rice flour as additive for producing silicon carbide ceramic via pressureless solid-state sintering

Authors

• Apichart Jinnapat
• Auamporn Rattanasing
• Nithiwach Nawaukkaratharnant
• Kritkeaw Somton
• Kannigar Dateraksa

Publication Date

2024

Abstract

This research aimed to investigate the possibility of using the mixture of boric acid and glutinous rice flour as a cost-efficient alternative additive for producing silicon carbide (SiC) ceramic sintered at 1800℃ via pressureless solid-state sintering. The results indicated that the addition of boric acid- glutinous rice flour mixture (10 wt%) in an appropriate ratio (0.5 by molar ratio) into the SiC mixture (90 wt%) enhanced the densification and flexural strength of sintered SiC samples. However, increasing boric acid/glutinous rice flour ratio reduces density and flexural strength. The 5.45 wt% carbon content was sufficient to remove the oxide layer of the SiC surface and improve the properties of SiC ceramic. In summary, the boric acid-glutinous rice flour mixture has a high potential to be used as an additive for producing dense and porous SiC ceramics via pressureless solid-state sintering.

DOI

10.55713/jmmm.v34i1.1939

First Page

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Last Page

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Recommended Citation

Jinnapat, Apichart; Rattanasing, Auamporn; Nawaukkaratharnant, Nithiwach; Somton, Kritkeaw; and Dateraksa, Kannigar (2024) "Possibility of using boric acid and glutinous rice flour as additive for producing silicon carbide ceramic via pressureless solid-state sintering," Journal of Metals, Materials and Minerals: Vol. 34: No. 1, Article 19.
DOI: 10.55713/jmmm.v34i1.1939
Available at: https://digital.car.chula.ac.th/jmmm/vol34/iss1/19