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首页> 外文期刊>Chemical Physics Letters >Core-shell micron-scale composites of titanium oxide and carbide formed through controlled thermal-plasma oxidation
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Core-shell micron-scale composites of titanium oxide and carbide formed through controlled thermal-plasma oxidation

机译:通过控制热等离子体氧化形成的二氧化钛和碳化物核-壳微米级复合材料

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摘要

Core-shell structured micron-scale spheres of titanium oxide and carbide were prepared by the controlled in-flight oxidation of a powder of irregularly shaped titanium-carbide particles in an argon-oxygen thermal plasma. Mono-dispersed core-shell particles with rutile shells and TiC cores were formed by an intermediate-rate input of oxygen to the plasma gas. The partial oxidation of the TiC particles in the liquid phase was accompanied by spheroidization of the surface oxide melt, thus giving rise to a core-shell composite under rapid quenching. TiO2-TiC core-shell composites have potential as new materials for roles such as light-scattering media, photo-catalysts, and electro-rheorogical fluids. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 21]
机译:氧化钛和碳化物的核-壳结构微米级球体是通过在氩氧热等离子体中控制飞行中不规则形状的碳化钛颗粒粉末的氧化而制得的。通过向等离子体气体中速输入氧气,形成具有金红石壳和TiC核的单分散核-壳颗粒。 TiC颗粒在液相中的部分氧化伴随着表面氧化物熔体的球形化,因此在快速淬火下产生了核-壳复合材料。 TiO2-TiC核壳复合材料作为光散射介质,光催化剂和电流变流体等新角色具有潜力。 (C)2002 Elsevier Science B.V.保留所有权利。 [参考:21]

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