Effect of NaCl on the synthesis of TiB2 powder by a self-propagating high-temperature synthesis technique

被引：72

作者：

Khanra, AK

Pathak, LC ^{[1
]}

Mishra, SK

Godkhindi, MM

机构：

[1] Natl Met Lab, Jamshedpur 831007, Bihar, India

[2] Indian Inst Technol, Dept Met & Mat Engn, Kharagpur 721302, W Bengal, India

来源：

MATERIALS LETTERS | 2004年 / 58卷 / 05期

关键词：

TiB2; SHS; ceramics; diborides; ultra-fine powders; preparation;

D O I：

10.1016/j.matlet.2003.06.003

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The self-propagating high-temperature synthesis (SHS) of sub-micrometer-sized TiB2 powders were investigated by igniting the stoichiometric mixture of TiO2, H3BO3, and Mg powders and with the addition of different percentages of NaCl as SHS diluents in a resistance-heating furnace. The combustion reaction carried out in inert atmosphere (Ar) showed the SHS ignition at a temperature approximate to 680 degreesC. The samples were investigated by XRD, SEM/EDS, and TEM/EDS during different stages of synthesis. The addition of diluents reduced the grain growth of particle possibly by reducing the adiabatic temperatures and giving a coating on the TiB2 particles. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：733 / 738

页数：6

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