Skip to main content Accessibility help
×
Home

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

  • Junmin Yan (a1), Xianfeng Ma (a2), Wei Zhao (a2), Huaguo Tang (a1), Changjun Zhu (a1) and Shuguang Cai (a1)...

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.

Copyright

Corresponding author

a) Address all correspondence to this author. e-mail: xfma@ns.ciac.jl.cn

References

Hide All
1.Goren-Muginstein, G.R., Berger, S., Rosen, A.: Sintering study of nano-crystalline tungsten carbide powders. Nanostruct. Mater. 10, 795 (1998).
2.Scussel, H.J.: Friction and wear of cemented carbides, in ASM Handbook Vol. 18 Ed. Blau, P. (ASM International, Materials Park, OH, 1992), p. 795.
3.Tang, H.G., Ma, X.F., Zhao, W., Yan, X.W., Hong, R.J.: Preparation of W–Al alloys by mechanical alloying. J. Alloy Compds. 347, 228 (2002).
4.Andrews, M.R.: Production and characteristics of the carbides of tungsten. J. Phys. Chem. 27, 270 (1923).
5.Gente, C., Oehring, M., Bormann, R.: Formation of thermodynamically unstable solid solutions in the Cu–Co system by mechanical alloying. Phys. Rev. B 48, 13244 (1993).
6.Veltl, G., Scholz, B., Kunze, H-D.: Amorphization of Cu–Ta alloys by mechanical alloying. Mater. Sci. Eng. A 134, 1410 (1991).
7.Fecht, H.J., Hellstern, E., Fu, Z., Johnson, W.L.: Nanocrystalline metals prepared by high-energy ball milling. Metall Trans. A 21, 2333 (1990).
8.Pitschke, W., Hermann, H., Mattern, N.: The influence of surface roughness on diffracted x-ray intensities in Bragg–Brentano geometry and its effect on the structure determination by means of Rietveld analysis. Powder Diff. 8, 74 (1993).
9.Hightower, A., Fultz, B., Bowman, R.C. Jr.: Mechanical alloying of Fe and Mg. J. Alloy Compds. 252, 238 (1997).
10.Hojo, J., Ryoichioono, R., Kato, A.: The sinterability of ultrafine WC powders obtained by a CVD method. J. Mater. Sci. 15, 2335 (1980).
11.Bagchi, T.P., Sen, P.K.: Kinetics of densification of powder compacts during the initial stage of sintering with constant rates of heating. A thermal analysis approach. Part I. Theoretical considerations. Thermochim. Acta 56, 261 (1982).
12.Andrievski, R.A.: Superhard materials based on nanostructured high-melting point compounds: Achievements and perspectives. Int. J. Refract. Met. Hard Mater. 19, 447 (2001).

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed