High frequency induction heated sintering of nanostructured Al2O3-ZrB2 composite produced by MASHS technique

被引：21

作者：

Abbasi, B. Jamal ^{[1
]}

Zakeri, M. ^{[1
]}

Tayebifard, S. A. ^{[1
]}

机构：

[1] Mat & Energy Res Ctr, Karaj, Iran

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 07期

关键词：

Nanocomposite; Zirconium diboride; Self-propagating high temperature synthesis; High frequency induction heated sintering; HIGH-TEMPERATURE SYNTHESIS; B MASTER ALLOYS; MECHANICAL-PROPERTIES; ALUMINA; ZIRCONIUM; SHS; PERFORMANCES; FABRICATION; IMPROVE;

D O I：

10.1016/j.ceramint.2014.01.141

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：

Nanostructured Al2O3-ZrB2 composite was synthesized using an alternative route called Mechanically Activated Self-propagating High-temperature Synthesis (MASHS). It was demonstrated that Al2O3-ZrB2 composite with nanometric structure could be produced via a very fast combustion front in contrast with the SHS process. Ball milling for 5 h with ball to powder weight ratio of 5:1 was found to be the optimum condition for activation of the reactants. Using the high frequency induction heated sintering method, the composite was consolidated within 3 min. The relative density of the sintered sample was 99% of the theoretical density at an applied pressure of 20 MPa and temperature of 1800 C. The average hardness and fracture toughness were 19.5 GPa and 4.1 +/- 0.3 MPa m(1/2), respectively. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：9217 / 9224

页数：8

共 28 条

[1] Mechanochemical synthesis of Al2O3-ZrB2-ZrO2 nanocomposite powder [J].