Intragranular Tungsten/Zirconium Carbide Nanocomposites via a Selective Liquid/Solid Displacement Reaction

被引：14

作者：

Lipke, David W. ^{[1
]}

Zhang, Yunshu ^{[1
]}

Cai, Ye ^{[1
]}

Sandhage, Kenneth H. ^{[1
,2
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 09期

关键词：

POROSITY DCP METHOD; DISPLACIVE COMPENSATION; INCONGRUENT REDUCTION; MODEST TEMPERATURES; MAGNETIC-PROPERTIES; TUNGSTEN CARBIDE; COPPER MELT; ZR SYSTEM; COMPOSITES; DENSE;

D O I：

10.1111/j.1551-2916.2012.05345.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A selective liquid/solid displacement reaction has been used, for the first time, to convert non-oxide ceramic solid solutions into composites comprised of intragranular metal nanoparticles embedded within non-oxide ceramic microcrystals. The reaction of (ZrxW1-x)C microparticles with a ZrCu liquid at 1300 degrees C resulted in the formation of W/ZrC microparticles with a core-shell morphology. The internal microparticle core was comprised of W nanoparticles embedded within a single crystal ZrC matrix, whereas the W-free shell was comprised of an epitaxial layer of ZrC. Such a selective liquid/solid reaction process may be used to generate a variety of intragranular metal/ceramic-matrix composites.

引用

页码：2769 / 2772

页数：4

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