Synthesis and characterization of hafnium carbide based ceramics

被引：1

作者：

Matovic, Branko ^{[1
]}

Bucevac, Dusan ^{[1
]}

Maksimovic, Vesna ^{[1
]}

Nenadovic, Snezana ^{[1
]}

Pantic, Jelena ^{[1
]}

Gautam, Devendraprakash ^{[2
]}

Yano, Toyohiko ^{[3
]}

机构：

[1] Univ Belgrade, Inst Nucl Sci Vinca, Mat Sci Lab, Belgrade, Serbia

[2] Univ Duisburg Essen, Dept Engn Sci, Nanoparticle Proc Technol, D-47057 Lotharstrasse, MA, Germany

[3] Tokyo Inst Technol, Nucl Reactors Res Lab, Meguro Ku, Tokyo 1528550, Japan

来源：

ADVANCED CERAMICS AND NOVEL PROCESSING | 2014年 / 616卷

关键词：

Ceramics; High-temperature properties; Scanning electron microscopy (SEM); Sintering; POWDER;

D O I：

10.4028/www.scientific.net/KEM.616.1

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：

Hafnium carbide powder was synthesized by sol-gel polycondensation of hafnium chloride with citric acid. The starting materials were dissolved in water and mixed homogeneously on a hot plate until a precomposite gel was formed. Pyrolysis of the obtained gel resulted in formation of monoclinic hafnia and amorphous carbon, which after subsequent heat treatment transformed into hafnium carbide. Materials were analyzed by means of X-ray diffraction and electron microscopy investigations. The results showed that the obtained carbide powder was composed of nearly equiaxed particles of narrow size distribution. The obtained hafnium carbide powder was densified via spark plasma sintering (SPS) at 1950 degrees C using molybdenun silicide as sintering additive. Microstructure and mechanical properties of the obtained hafnium carbide ceramics were investigated.

引用

页码：1 / +

页数：8

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