Effects of particle size and heating rate on ignition of ultrafine particles of Fe, Ni and Co

被引：13

作者：

Ohno, S

Okuyama, H

Honma, K

Sakka, Y

机构：

[1] Natl. Research Institute for Metals, Tsukuba

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 1996年 / 60卷 / 03期

关键词：

ultrafine particle; iron; nickel; cobalt; ignition phenomenon; differential thermal analysis;

D O I：

10.2320/jinstmet1952.60.3_318

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The ignition phenomenon of ultrafine metal particles of Fe, Ni and Co (metal UFP) in oxygen atmosphere has been investigated by using differential thermal analysis. The ignition points of those metal UFP increases gradually with decreasing of the heating rate, but no ignition (slow oxidation) is observed under the heating rate lower than a certain critical value. It is considered that the ignition of metal UFP at the heating process is caused by fast oxidation of a fresh metal surface exposed to atmosphere because the oxide layer on a particle is broken by thermal stress induced under a quick heating process.

引用

页码：318 / 323

页数：6

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