Preparation of Mg-W Graded Materials by Spark Plasma Sintering

Abstract:

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A new kind of functionally graded materials (FGM) with density gradient has come to show great potentials as flier-plates for creating quasi-isotropic compression waves. In order to meet the demand of lower density in the front face and wider density range for such flier-plate, Mg with a density of 1.74g/cm3 and W of 19.3g/cm3 are selected to make Mg-W system density graded materials. Mg-W alloys with various mass fractions of Mg and W were sintered by spark plasma sintering (SPS) technique at low temperatures, and the processing of densification is mainly investigated. It is found that, up to 92wt%W, the Mg-W alloys can be fully densified at 873K due to the conglutination of Mg particles. The Mg-W alloys still exist as a mechanical mixture of Mg and W. Finally, the Mg-W density graded materials with a density change from 1.74g/cm3 to 10.55g/cm3 have been successfully prepared.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1869-1871

DOI:

10.4028/www.scientific.net/KEM.368-372.1869

Citation:

Q. Shen et al., "Preparation of Mg-W Graded Materials by Spark Plasma Sintering", Key Engineering Materials, Vols. 368-372, pp. 1869-1871, 2008

Online since:

February 2008

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Price:

$35.00

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