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Preparation of porous zirconium microspheres by magnesiothermic reduction and their microstructural characteristics

Published online by Cambridge University Press:  09 August 2011

Kyung-Tae Park ,
Hayk H. Nersisyan ,
Byong-Sun Chun  and
Jong-Hyeon Lee
Kyung-Tae Park
Affiliation:
Graduate School of Green Energy Technology, Chungnam National University, Daejeon 305-764, Republic of Korea
Hayk H. Nersisyan
Affiliation:
Rapidly Solidified Materials Research Institute, Chungnam National University, Daejeon 305-764, Republic of Korea
Byong-Sun Chun
Affiliation:
Korea Institute of Science and Technology Information, ReSEAT Program, Daejeon 305-806, Republic of Korea
Jong-Hyeon Lee*
Affiliation:
Graduate School of Green Energy Technology, Chungnam National University, Daejeon 305-764, Republic of Korea
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Porous zirconium metal microspheres were synthesized successfully by a combustion technique using ZrO2 + 2Mg starting mixture. In this process, a controlled amount of KClO3 + 3Mg is mixed with ZrO2 + 2Mg to enable a self-sustaining combustion process and to promote a reduction of the ZrO2. The framework structure, morphology, and porosity of zirconium microspheres were determined using various techniques. Microscopic visualization suggested that the spherical structure has macroporous windows of diameter ∼0.5–5.0 μm and the space between the macropores has a wormhole-like mesoporous/microporous structure. The mesoporous structure had a pore diameter of ∼1.19 nm. This procedure provides an easy method for the synthesis of porous microspherical assemblies of Zr composed of submicrometer size particles.

Keywords

Combustion synthesisPorosityScanning electron microscopy
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 16 , 28 August 2011 , pp. 2117 - 2122
Copyright
Copyright © Materials Research Society 2011

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