Fabrication of Ni/WC composite with two distinct layers through centrifugal infiltration combined with a thermite reaction
Fabrication of Ni/WC composite with two distinct layers through centrifugal infiltration combined with a thermite reaction
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通过离心渗透结合铝热反应制备具有两个不同层的 Ni/WC 复合材料
DOI：
10.1016/j.ceramint.2013.06.101
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发表时间：
2014
影响因子：
5.2
通讯作者：
Jiangtao Li
中科院分区：
文献类型：
--
作者：
Yu Xu;Zengchao Yang;Zhao Han;Guanghua Liu;Jiangtao Li
采用铝热反应和离心浸渗相结合的方法制备了Ni/WC复合材料。在离心力的驱动下，由铝热剂反应原位生成的熔融镍渗透到WC粉末压坯的多孔预制体中。凝固后，获得了具有两个扩散结合层的Ni/WC复合材料。两层均由Ni和WC组成，但含量不同。在试样的不同区域，观察到不同形貌和尺寸的WC颗粒，这是由于WC颗粒的生长和弛豫竞争造成的。富WC层的平均硬度为81.5HRA，富Ni层的硬度从61.4HRA逐渐降低到53.9HRA。
A simple and energy-efficient method combining a thermite reaction and centrifugal infiltration was applied to produce Ni/WC composites. Driven by a centrifugal force, the molten Ni in-situ produced by a thermite reaction infiltrated into a porous preform of WC powder compact. After solidification, a Ni/WC composite was obtained with two metallurgically bonded layers. Both of the two layers were composed of Ni and WC but with different contents. In different regions of the sample, WC particles with different morphologies and sizes were observed, which were caused by the competition of growth and relaxation of WC particles. The WC-rich layer showed an average hardness of 81.5 HRA, and the hardness of the Ni-rich layer gradually decreased from 61.4 HRA to 53.9 HRA.
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影响因子：
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作者：
N. Sobczak;J. Obła̧kowski;R. Nowak;A. Kudyba;W. Radziwill
通讯作者：
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DOI：
10.1016/j.ijrmhm.2012.04.014
发表时间：
2012-11
影响因子：
3.6
作者：
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DOI：
10.1016/j.jmatprotec.2005.04.038
发表时间：
2006-06-01
影响因子：
6.3
作者：
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通讯作者：
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影响因子：
0.8
作者：
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