PENGARUH PERSENTASE PENAMBAHAN SiO2 DAN VARIASI SUHU SINTERING TERHADAP DENSITAS, POROSITAS, HARDNESS, STRUKTUR KRISTAL DAN MORFOLOGI PADA KERAMIK SiC

MELINIA, LUH AYU and Ramlan, Ramlan and Tetuko, Anggito Pringgo (2021) PENGARUH PERSENTASE PENAMBAHAN SiO2 DAN VARIASI SUHU SINTERING TERHADAP DENSITAS, POROSITAS, HARDNESS, STRUKTUR KRISTAL DAN MORFOLOGI PADA KERAMIK SiC. Undergraduate thesis, Sriwijaya University.

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Abstract

In this study, the addition of SiO2 additives to SiC ceramics was carried out to reduce the sintering temperature by producing optimal ceramics. The addition of SiO2 was given as much as 0, 0.5, 1 and 1.5 (mass%). The additives were weighed, mixed and ground using High Energy Milling for 30 minutes. Then it was sintered at temperatures of 850°C, 1000℃ and 1100°C. The characterization results showed that the composition of 1.5% SiO2 at 1100°C had a density of 2.835 g/cm3 and a porosity of 11.1% and a hardness of 876.7 Hv. From XRD analysis, only two phases were identified, namely moissanite (SiC) and cristobalite (SiO2). The crystal size decreased with the addition of SiO2 additives, but the sample of 1.5% SiO2 at a temperature of 850°C occurred agglomeration so that the crystal size was getting bigger. The shape and size of the grains in ceramics are irregular from one grain to another. Through an image with a magnification of 5000x the particle size of SiC-SiO2, it is obtained about 1 μm to 7 μm

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Kata Kunci: keramik, SiC, SiO2, Sintering, Struktur Kristal, Densitas, Porositas dan kekerasan.
Subjects:	Q Science > QC Physics > QC1-999 Physics
Divisions:	08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User:	Luh Ayu Melinia
Date Deposited:	07 Jul 2021 03:12
Last Modified:	07 Jul 2021 03:12
URI:	http://repository.unsri.ac.id/id/eprint/49062

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