Physical–chemical properties of nanopowders and ceramic samples of REE orthophosphates

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• 作者：L. P. Mezentseva ; I. Yu. Kruchinina ; A. V. Osipov…
• 关键词：sol–gel synthesis ; REE orthophosphate nanopowders ; physical–chemical analysis ; ceramic samples ; dilatometry ; physical–mechanical properties
• 刊名：Glass Physics and Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：98-105
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Ceramics, Glass, Composites, Natural Materials; Characterization and Evaluation of Materials; Materials Science, general; Physical Chemistry;
• 出版者：Pleiades Publishing
• ISSN：1608-313X
• 卷排序：43

文摘

A series of physical–chemical studies of a series of binary REE orthophosphate systems has been performed: LaPO₄–DyPO₄–H₂O, LaPO₄–YPO₄–H₂O, LaPO₄–LuPO₄–H₂O, YPO₄–LuPO₄–H₂O, and YPO₄–ScPO₄–H₂O. Nanopowders of Ln'_{1 −x}Ln'_x PO₄ · nH₂O orthophosphates have been synthesized by the sol–gel method using direct and reverse precipitation techniques. Ceramic samples were produced from the nanopowders, and their physical–mechanical properties were determined depending on the thermal treatment temperature and duration. The ceramic samples’ thermal behavior has been investigated by the dilatometry method. The results have been compared depending on the technique of nanopowder synthesis.