The effects of calcination heating rate on phase formation and structure of zircon sand-derived zirconia

Afra Eka Wahyuni, Budi Hariyanto, Detak Yan Pratama, Sri Yani Purwaningsih, Suminar Pratapa*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Phase formation and structure examination has been conducted to study the effects of thermal treatment and heating rates on zircon (ZrSiO4) sand-derived zirconia (ZrO2). A preliminary investigation of the elements present in the sand using XRF revealed that Zr was the major element, corresponding to 92.4% of the sample. The zirconia precursor was synthesized through a three-stage process that involves purifying zircon powder, alkali fusion, and co-precipitation method. The zirconia crystal was obtained by heating the sample to 700, 800 and 900 °C with heating rates of 5 and 10 °C/min, respectively. The formation of tetragonal zirconia (t-ZrO2) with space group P42/nmc is shown in a qualitative study of all sample XRD patterns. Furthermore, Rietveld analysis was used to determine crystal structure parameters including lattice parameters and tetragonality. The calcination temperature and heating rate decide the phase, t-ZrO2 crystallite size, and tetragonality. Furthermore, calcining to 700 and 800 °C created t-ZrO2, however, elevated temperature to 900 °C lead to t→m transformation. The t-ZrO2 size increases with temperature between 700 and 900 °C, range of 9 and 15 nm. Meanwhile, the tetragonality of t-ZrO2 tends to decrease due to m-ZrO2 being present.

Original languageEnglish
Article number012016
JournalJournal of Physics: Conference Series
Volume2780
Issue number1
DOIs
Publication statusPublished - 2024
Event3rd International Symposium on Physics and Applications 2023, ISPA 2023 - Virtual, Online
Duration: 22 Nov 202323 Nov 2023

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