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首页> 外文期刊>Journal of the European Ceramic Society >Preparation of nanocrystalline ultra-high temperature Ta4ZrC5 ceramics by joint processes of solvothermal and carbothermal reaction
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Preparation of nanocrystalline ultra-high temperature Ta4ZrC5 ceramics by joint processes of solvothermal and carbothermal reaction

机译：通过溶剂和碳热反应的联合过程制备纳米晶体超高温TA4ZRC5陶瓷

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摘要

An attractive way to prepare nanocrystalline tantalum zirconium carbide ternary ceramics was proposed and confirmed experimentally. The experimental results showed the Ta4ZrC5 powders were successfully fabricated by joint processes of solvothermal and carbothermal reaction. The thermodynamic change process in the Ta2O5-ZrO2-C system was studied. The reactions were substantially completed at relatively lower temperatures (similar to 1873 K/1h) and the synthesized powders had a small average crystallite size (similar to 10 nm). The crystalline structure and the nitrogen sorption isotherms patterns of the product were studied. Besides, a monolithic Ta4ZrC5 ceramics was densified without sintering additives by pressureless sintering. (C) 2016 Elsevier Ltd. All rights reserved.
机译：提出了一种制备纳米晶钽氧化锆三元陶瓷的有吸引力的方式并实验证实。 实验结果表明，通过溶剂热和碳热反应的联合方法成功制造了TA4ZRC5粉末。 研究了TA2O5-ZRO2-C系统中的热力变化过程。 在相对较低的温度下（类似于1873k / 1h），反应基本上完成，合成粉末具有小的平均微晶尺寸（类似于10nm）。 研究了产品的结晶结构和氮吸附等温图案。 此外，通过无压烧结而没有烧结添加剂的无烧结添加剂，致密整体Ta4zRC5陶瓷。 （c）2016 Elsevier Ltd.保留所有权利。

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