Atthariq, Mochammad Ibrahim (2021) Pembentukan Fasa dan Perubahan Ukuran Kristal t-ZrO2 Akibat Variasi Temperatur Kalsinasi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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BUKU TA_M. IBRAHIM ATTHARIQ-01111740000043.pdf - Accepted Version Restricted to Repository staff only until 1 October 2023. Download (5MB) | Request a copy |
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BUKU TA_M. IBRAHIM ATTHARIQ-01111740000043.pdf - Accepted Version Restricted to Repository staff only Download (5MB) | Request a copy |
Abstract
Penelitian ini bertujuan untuk mempelajari pengaruh temperatur kalsinasi pada rentang 750-1000℃ terhadap pembentukan fasa t-ZrO2 dan ukuran kristal t-ZrO2. Sumber serbuk t-ZrO2 adalah pasir zirkon (ZrSiO4) yang ditambang dari Kereng Pangi, Kalimantan Tengah. Pada penelitian ini, prekursor-prekursor yang digunakan untuk memperoleh serbuk-serbuk t-ZrO2 variasi ukuran adalah zirkonia amorf (ZR-A) dan zirkonia 700 °C (TZR_700) dengan cara kalsinasi pada rentang temperatur 700 hingga 1000 °C. Serbuk untuk dua jenis prekursor tersebut telah dilaporkan pada penelitian sebelumnya dengan variasi temperatur kalsinasi 750, 800, 900 dan 1000 ℃, dan pada penelitian ini dipertajam dengan variasi temperatur kalsinasi 825, 850 dan 875 ℃. Serbuk-serbuk hasil kalsinasi dikarakterisasi dengan XRD dan diketahui bahwa pada temperatur 800-900 °C, zirkonia cenderung mempertahankan fasa tetragonalnya, sementara pada rentang 900-1000 °C terjadi transformasi zirkonia tetragonal ke monoklinik. Untuk kedua jenis prekursor, ukuran kristal berubah menurut temperatur kalsinasi adalah 9, 9, 10, 13, dan 20 nm pada temperatur 800, 825, 850, 875, dan 900 °C untuk prekursor ZR-A. Sementara itu, ukuran tersebut untuk prekursor TZR_700 adalah 10, 10, 11, 14, dan 26 nm. Secara umum, berdasarkan citra SEM dan data PSA, semua ukuran serbuk zirkonia semakin besar seiring bertambahnya temperatur kalsinasi, dan ditemukan kecenderungan aglomerasi pada temperatur 800-900 ℃, ditandai dengan banyaknya kristalit yang terbentuk.
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This study aims to study the effect of calcination temperature in the range of 750-1000℃ on the formation of the t ZrO2 phase and the crystal size of t-ZrO2. The source of t-ZrO2 powder is zircon sand (ZrSiO4) which is mined from Kereng Pangi, Central Kalimantan. In this study, the precursors used to obtain size variations of t-ZrO2 powders were amorphous zirconia (ZR-A) and 700 °C zirconia (TZR_700) by calcination at a temperature range of 700 to 1000 °C. Powders for these two types of precursors have been reported in previous studies with variations in calcination temperature of 750, 800, 900 and 1000 , and in this study sharpened with variations of calcination temperature of 825, 850 and 875 . The calcined powders were characterized by XRD and it is known that at a temperature of 800-900 °C, zirconia tends to maintain its tetragonal phase, while in the range of 900-1000 °C there is a transformation of tetragonal to monoclinic zirconia. For both types of precursors, the crystal size changes according to the calcination temperature were 9, 9, 10, 13, and 20 nm at temperatures of 800, 825, 850, 875, and 900 °C for the ZR-A precursor. Meanwhile, the sizes for the TZR_700 precursor are 10, 10, 11, 14, and 26 nm. In general, based on SEM images and PSA data, all sizes of zirconia powders increased with increasing calcination temperature, and agglomeration tendencies were found at a temperature of 800-900 °C, indicated by the number of crystallites formed.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Ukuran kristal, kalsinasi, zirkonia tetragonal (t-ZrO2), zirkonia monoklinik (m-ZrO2), Calcination, crystal size, tetragonal zirconia (t-ZrO2), monoclinic zirconia (m-ZrO2) |
| Subjects: | Q Science > QC Physics > QC100 Crystals. |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Mochammad Ibrahim Atthariq |
| Date Deposited: | 03 Sep 2021 03:28 |
| Last Modified: | 06 Apr 2022 02:30 |
| URI: | http://repository.its.ac.id/id/eprint/91673 |
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