Temperature behavior of exothermic reaction of Al/Ni multilayer powder materials based on cold-rolling and pulverizing method
Temperature behavior of exothermic reaction of Al/Ni multilayer powder materials based on cold-rolling and pulverizing method
复制标题
DOI：
10.7567/jjap.56.06gn07
复制
发表时间：
2017-06-01
影响因子：
1.5
通讯作者：
Namazu, Takahiro
中科院分区：
文献类型：
--
作者：
Kametani, Nagamasa;Izumi, Taisei;Namazu, Takahiro
本文报道了用冷轧和粉化工艺制备的Al/Ni多层粉末材料的自蔓延放热反应特性，这是对具有节能特性的各种应用的热源的初步试验结果。实验结果表明，所开发的Al/Ni多层粉末材料在空气气氛中反应后，随着冷轧道次从20次增加到40次，最高温度从约1450℃提高到1768℃以上。扫描电子显微镜观察和X射线衍射分析表明，经过40道次冷轧的Al/Ni粉末多层结构发生变形，厚度小于亚微米，几乎完全与NiAl金属间化合物发生反应。优化冷轧条件有可能使我们能够控制放热，这将是有用的热源。(C)2017日本应用物理学会
In this paper, the characteristics of self-propagating exothermic reactions of an Al/Ni multilayer powder materials fabricated by a cold-rolling and powdering procedure are reported as initial findings of the first trial on a heat source for various applications with the energy-saving feature. Experimental results showed that, following the reaction of the developed Al/Ni multilayer powder materials in air atmosphere, the maximum temperature increased from approximately 1450 degrees C to over 1768 degrees C with increasing number of passes from 20 to 40 in cold-rolling. Furthermore, observations by scanning electron microscopy and crystallographic identification by X-ray diffraction measurements showed that the multilayer structure of powdered Al/Ni after 40 passes of cold-rolling was deformed, became thinner with below sub-micrometer thickness, and almost completely reacted to NiAl intermetallic compounds. It is possible that optimizing cold-rolling conditions enables us to control exothermic heat, which will be useful for heat sources. (C) 2017 The Japan Society of Applied Physics