Coating and spark plasma sintering of nano-sized TiN on alumina particles of different size, shape and structure

被引：2

作者：

Shimada, Shiro ^{[1
]}

Paseuth, Anongsaek ^{[1
]}

Kiyono, Hajime ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Sci, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2009年 / 117卷 / 1361期

关键词：

Coating; Spark plasma sintering; Nano-sized TiN; Alumina; Composites; COMPOSITES; NANOCOMPOSITES; FABRICATION; CERAMICS;

D O I：

10.2109/jcersj2.117.47

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：

TiN-coated Al2O3 particles of different size, shape and crystal structure were prepared by depositing nano-size TiO2 on the Al2O3 surfaces from Ti(O-i-C3H7)(4) Solution (TiO2 precursor) by controlled hydrolysis, then nitrided with NH3 at 1000 degrees C. Irrespective of the source of Al2O3 particles, a homogeneous TiO2 coating was achieved by heating from 10 to 40 degrees C an ultrasonic suspension of the Al2O3 particles containing the precursor with 1.0 vol% H2O. After nitridation, the Al2O3 grains were coated with 10-20 nm TiN particles. Spark plasma sintering of the TiN/Al2O3 particles at 1500 degrees C and 1600 degrees C yielded the composite ceramics with a relative density or 94-97%. Composite TiN/Al2O3 ceramics with an electrical resistivity or similar to 10(-2) Omega cm were obtained at 25 vol% TiN composition. (C)2009 The Ceramic Society of Japan. All rights reserved.

引用

页码：47 / 51

页数：5

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