Study on the Preparation of Fe2Mo3O12 and its Negative Thermal Expansion Property

Abstract:

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The title compound Fe2Mo3O12 is prepared using a wet chemical method from aqueous solutions of ferrous nitrate and ammonium molybdate. The various process parameters were optimized to get a suitable precursor, which upon calcination at 700°C for 2 h gave a well crystalline product. The product was characterized by powder XRD to have a monoclinic unit cell of Fe2Mo3O12. Its thermal expansion property was investigated by thermomechanical analyzer and high-temperature XRD. The typical monoclinic to orthorhombic phase transition happened at about 500°C, and Fe2Mo3O12 shows great NTE (macro -13.43×10-6°C-1 and micro -21.77×10-6°C-1) property during the temperature range from 500°C to 800°C.

Info:

Periodical:

Advanced Materials Research (Volumes 287-290)

Edited by:

Jinglong Bu, Pengcheng Wang, Liqun Ai, Xiaoming Sang, Yungang Li

Pages:

373-376

DOI:

10.4028/www.scientific.net/AMR.287-290.373

Citation:

Q. Q. Liu et al., "Study on the Preparation of Fe2Mo3O12 and its Negative Thermal Expansion Property", Advanced Materials Research, Vols. 287-290, pp. 373-376, 2011

Online since:

July 2011

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Price:

$35.00

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