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Title
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Texturing of hydrothermally synthesized in a strong magnetic field by slip casting
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Author
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Abstract
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| Barium titanate powder was processed by slip casting in a rotating strong magnetic field of 9.4 T. The orientation factor of the sintered compact was analyzed by the X-ray diffraction technique and the microstructure (grain-size) was analyzed by scanning electron microscope. The hydrothermally prepared barium titanate was used as matrix material and the molten-salt synthesized barium titanate, with a larger particle-size, was used as template for the templated grain-growth process. Addition of large template particles was observed to increase the orientation factor of the sintered cast (5 vol% loading). Template particles acted as starting grains for the abnormal grain-growth process and the average grain-size was increased after sintering. Increasing the solid loading (15 vol%) resulted in a similar orientation factor with a decrease of the average grain size by more than half. However, addition of templates to the 15 vol% cast had a negative effect on the orientation factor. The impingement of growing particles was stated as the primary cause of particle misorientation resulting in a low orientation factor after sintering. Different heating conditions were tested and it was determined that a slow heating rate gave the highest orientation factor, the smallest average grain-size and the highest relative density. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. |
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Language
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English
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Source (journal)
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Ceramics international. - Faenza, 1981, currens
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Publication
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Faenza
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Ceramurgica
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2016
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ISSN
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0272-8842
[print]
1873-3956
[online]
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DOI
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10.1016/J.CERAMINT.2015.12.073
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Volume/pages
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42
:4
(2016)
, p. 5382-5390
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ISI
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000369460500098
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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