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Growth and sintering effects of hydrated polycrystalline Li2WO4

Polycrystalline Li2WO4 was sintered at temperatures, 400, 450, 500, 550, 600, 650, and 700 A degrees C. After sintering at each particular temperature, the Li2WO4 was cooled to room temperature. The X-ray diffraction pattern of Li2WO4 exhibits dominant peaks attributable to 7Li(2)WO(4).4H(2)O (cubic...

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Main Authors: Johan, M.R., Han, T.K., Arof, Abdul Kariem
Format: Article
Published: Springer Verlag (Germany) 2010
Subjects:
Q Science (General)
Online Access:http://eprints.um.edu.my/14718/
https://doi.org/10.1007/s11581-009-0407-4
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spelling my.um.eprints.147182018-10-04T07:58:34Z http://eprints.um.edu.my/14718/ Growth and sintering effects of hydrated polycrystalline Li2WO4 Johan, M.R. Han, T.K. Arof, Abdul Kariem Q Science (General) Polycrystalline Li2WO4 was sintered at temperatures, 400, 450, 500, 550, 600, 650, and 700 A degrees C. After sintering at each particular temperature, the Li2WO4 was cooled to room temperature. The X-ray diffraction pattern of Li2WO4 exhibits dominant peaks attributable to 7Li(2)WO(4).4H(2)O (cubic) and Li2WO4 (hexagonal) and thus reveals the extent of hydration of the material. The composition varies on heating at several temperatures as shown by the presence of new peaks in the diffractogram. Thermogravimetric analysis is used to correlate respective structural and thermal properties in variation. The impedance spectra show the presence of a semicircle in the higher frequency regions and straight line behaviors at lower frequencies. SEM micrographs depict the image of sintered Li2WO4. Grain growth studies reveal the sensitiveness of grain toward temperature. The maximum grain size is observed to be a parts per thousand 5.7 mu m at 700 A degrees C. Springer Verlag (Germany) 2010 Article PeerReviewed Johan, M.R. and Han, T.K. and Arof, Abdul Kariem (2010) Growth and sintering effects of hydrated polycrystalline Li2WO4. Ionics, 16 (4). pp. 323-333. ISSN 0947-7047 https://doi.org/10.1007/s11581-009-0407-4 doi:10.1007/s11581-009-0407-4
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Johan, M.R.
Han, T.K.
Arof, Abdul Kariem
Growth and sintering effects of hydrated polycrystalline Li2WO4
description Polycrystalline Li2WO4 was sintered at temperatures, 400, 450, 500, 550, 600, 650, and 700 A degrees C. After sintering at each particular temperature, the Li2WO4 was cooled to room temperature. The X-ray diffraction pattern of Li2WO4 exhibits dominant peaks attributable to 7Li(2)WO(4).4H(2)O (cubic) and Li2WO4 (hexagonal) and thus reveals the extent of hydration of the material. The composition varies on heating at several temperatures as shown by the presence of new peaks in the diffractogram. Thermogravimetric analysis is used to correlate respective structural and thermal properties in variation. The impedance spectra show the presence of a semicircle in the higher frequency regions and straight line behaviors at lower frequencies. SEM micrographs depict the image of sintered Li2WO4. Grain growth studies reveal the sensitiveness of grain toward temperature. The maximum grain size is observed to be a parts per thousand 5.7 mu m at 700 A degrees C.
format Article
author Johan, M.R.
Han, T.K.
Arof, Abdul Kariem
author_facet Johan, M.R.
Han, T.K.
Arof, Abdul Kariem
author_sort Johan, M.R.
title Growth and sintering effects of hydrated polycrystalline Li2WO4
title_short Growth and sintering effects of hydrated polycrystalline Li2WO4
title_full Growth and sintering effects of hydrated polycrystalline Li2WO4
title_fullStr Growth and sintering effects of hydrated polycrystalline Li2WO4
title_full_unstemmed Growth and sintering effects of hydrated polycrystalline Li2WO4
title_sort growth and sintering effects of hydrated polycrystalline li2wo4
publisher Springer Verlag (Germany)
publishDate 2010
url http://eprints.um.edu.my/14718/
https://doi.org/10.1007/s11581-009-0407-4
_version_ 1643689884673638400
score 13.235362

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