Maslakah, Umi (2020) Pengaruh Kandungan Al2O3 Terhadap Struktur dan Densitas Komposit ZrO2-Al2O3. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Studi pengaruh kandungan Al2O3 terhadap struktur dan densitas komposit ZrO2-Al2O3 telah dilakukan. Dalam penelitian ini digunakan material dasar tetragonal Zirkonia sebagai matriks dan gamma Alumina sebagai pengisi. Variasi komposisi massa alumina yaitu 10%, 20%, 30%, dan 40% berat. Zirkonia yang digunakan berasal dari sintesis pasir Zirkon alam berasal dari daerah Kerengpangi Kalimantan Tengah sedangkan Alumina disediakan dari bahan komersial. Kedua bahan dicampur secara wet milling dengan menggunakan alkohol sebagai media pencampur. Setelah dicampur, kemudian dikompaksi dan disinter pada temperatur 1400oC selama 3jam. Sampel penelitian diuji dengan X-Ray Diffraction (XRD) sebelum dan seesudah disinter untuk mengetahui fasa yang terbentuk. Uji SEM/EDX sampel tersinter dilakukan untuk mengetahui morfologi dan sebaran unsur-unsur serta uji densitas untuk mengetahui kerapatan dan porositas dari komposit. Hasil XRD sampel yang telah disinter menunjukkan fasa-fasa yang terbentuk antara lain monoklinik Zirkonia, korundum Alumina, Zirkon dan Mullite. Hasil SEM/EDX menunjukkan adanya difusi antar muka antara Zirkonia dan Alumina yang mengindikasikan terbentuknya komposit. Peningkatan kandungan alumina menyebabkan penurunan densitas komposit.
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Study of the effect of Al2O3 content on the structure and density of the ZrO2-Al2O3 composites has been carried out. In this study, a tetragonal zirconia base material was used as a matrix and gamma alumina as reinforcement. The variations in the mass composition of alumina are 10 wt.%, 20 wt.%, 30 wt.%, and 40 wt.%. The used zirconia be synthezised from the natural zircon sand from the Kerengpangi area of Central Kalimantan, while the alumina was supplied from commercial materials. The two ibase materials were mixed with wet milling using alcohol as a mixing medium. After being mixed, then compacted and sintered at a temperature of 1400oC. The before and after sintering samples were tested by X-Ray Diffraction (XRD) to determine the formed phase. The sintered sampples were observed using SEM / EDX to determine the morphology and distribution of the elements of the composite and density test to determine the density and porosity of the composites. The XRD results of the sintered sample showed that the formed phases were monoclinic zirconia, corundum, zircon and mullite. SEM/EDX results show the presence of interfacial diffusion between zirconia and alumina which indicates the formation of composites. The increasing of alumina content causes the decreasing of composites density.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Zirconia, alumina, interface, composite, Zirkonia, alumina, antar muka, komposit |
| Subjects: | Q Science > QC Physics > QC173.4.C63 Composite materials |
| Divisions: | Faculty of Natural Science > Physics > 45101-(S2) Master Thesis |
| Depositing User: | Umi Maslakah |
| Date Deposited: | 08 Sep 2020 02:41 |
| Last Modified: | 11 Jan 2024 06:50 |
| URI: | http://repository.its.ac.id/id/eprint/81816 |
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