Tough ceramics by microwave sintering of nanocrystalline titanium diboride ceramics

被引：60

作者：

Demirskyi, D. ^{[1
,2
,3
]}

Agrawal, D. ^{[2
]}

Raguya, A. ^{[3
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Penn State Univ, Mat Res Inst, University Pk, PA 10802 USA

[3] Frantsevich Inst Problems Mat Sci, UA-03680 Kiev, Ukraine

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 01期

关键词：

Sintering; Microwave heating; Ceramics; TiB2; TiN; MECHANICAL-PROPERTIES; DENSIFICATION KINETICS; SILICON-NITRIDE; SINGLE-MODE; GRAIN-SIZE; DIFFUSION; ZIRCONIA; TIB2; EVOLUTION; GROWTH;

D O I：

10.1016/j.ceramint.2013.07.010

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：

Dense composites of TiB2 with additions of TiN have been produced by microwave sintering. Microwave sintering was conducted at 1200-1700 degrees C under controlled atmosphere. The effects of composition, sintering temperature, on densification, microstructure, and mechanical properties were investigated. Microwave sintering resulted in uniform crack-free uniforrn microstructure, as well as maximum relative density of 99% and bending strength of 368 +/- 15 MPa, Young's modulus of 440 +/- 11 GPa, electric resistivity of 2 x 10(-5) Omega cm, Vickers hardness of 26.2 +/- 0.4 GPa, and a fracture toughness of 6.2 +/- 0.34 MPa.m(1/2) were obtained using 36 wt% TiB2, and sintering for 10 min at 1650 degrees C. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：1303 / 1310

页数：8

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