Mechanisms of reaction wave propagation during combustion synthesis of advanced materials

被引：38

作者：

Mukasyan, AS ^{[1
]}

Rogachev, AS ^{[1
]}

Varma, A ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem Engn, Notre Dame, IN 46556 USA

来源：

CHEMICAL ENGINEERING SCIENCE | 1999年 / 54卷 / 15-16期

基金：

美国国家科学基金会;

关键词：

combustion; heat transfer; kinetics; heterogeneous media; reaction mechanism; combustion synthesis;

D O I：

10.1016/S0009-2509(98)00457-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Using a digital high-speed microscopic video recording technique developed in our laboratory, we have investigated high-temperature combustion synthesis waves in the Ni + Al system. Based on the results obtained, we identify characteristic features of rapid high-temperature reaction wave propagation in heterogeneous media. It is shown that, while at time scales similar to 10(-1)s the reaction wave propagation appears to be steady, at time scales similar to 10(-3) s it exhibits features of hesitations followed by jumps, and at even faster time scales similar to 10(-4) s is shown to follow a novel scintillating reaction wave mechanism. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：3357 / 3367

页数：11

共 21 条

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