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Preparation and characterization of a novel solid solution of aluminum in tungsten carbide by mechanically activated high-temperature reaction

Published online by Cambridge University Press:  01 July 2006

Junmin Yan ,
Xianfeng Ma ,
Wei Zhao ,
Huaguo Tang ,
Changjun Zhu  and
Shuguang Cai
Junmin Yan
Affiliation:
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of Chinaand Graduate School of Chinese Academy of Sciences, Changchun 130022, People's Republic of China
Xianfeng Ma*
Affiliation:
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
Wei Zhao
Affiliation:
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
Huaguo Tang
Affiliation:
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of Chinaand Graduate School of Chinese Academy of Sciences, Changchun 130022, People's Republic of China
Changjun Zhu
Affiliation:
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of Chinaand Graduate School of Chinese Academy of Sciences, Changchun 130022, People's Republic of China
Shuguang Cai
Affiliation:
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of Chinaand Graduate School of Chinese Academy of Sciences, Changchun 130022, People's Republic of China
*
a) Address all correspondence to this author. e-mail: xfma@ns.ciac.jl.cn
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Abstract

In this work, a novel substitutional solid solution (W0.8Al0.2)C was synthesized by mechanically activated high-temperature reaction. X-ray diffraction was used for phase identification during the whole reaction process. Environment scanning electronic microscopy–field emission gun and energy dispersive x-ray were used to investigate the microstructure and the quantitative material composition of the specimen. (W0.8Al0.2)C was found to crystallize in the WC-type, and the cell parameters were a = 2.907(1) Å and c = 2.837(1) Å. The hardness of (W0.8Al0.2)C was tested to be 19.3 ± 1 GPa, and the density was 13.19 ± 0.05 g cm−3.

Keywords

Crystallographic structureHardnessSintering
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 7 , July 2006 , pp. 1700 - 1703
Copyright
Copyright © Materials Research Society 2006

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References

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