journal article·2011-01

XRD analysis and microstructure of milled and sintered V, W, C, and Co powders

A.S. Bolokang, M.J. Phasha, C. Oliphant, D. Motaung

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Abstract

Abstract In the current study, results of the milled and sintered V, W, C, Co powders are presented. Analytical techniques such as SEM equipped with EDS and XRD were used to study microstructure and phase evolution, respectively. In addition to B1 (VW)C solid solution, a rhombohedral V 2 O 3 and new τ-type (Cr 23 C 6 ) carbide were formed after sintering. The possible formation mechanisms behind detected phases are discussed. It is evident that complete MA process depends strongly on the starting compositions of pure elements, their lattice coherency according to Hume-Rothery rules on crystal structure and atomic size, and enough milling time that provides adequate kinetics.
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References (17)

Show source-provided references
1. Production of nanostructured WC–Co powder by mechanical alloying10.1016/j.ijrmhm.2008.06.005 ↗
2. Accomodation of the lattice mismatch at the VCx–WC interface10.1023/B:INTS.0000028649.89286.cf ↗
3. General aspects and limits of conventional ultrafine WC powder manufacture and hard metal production10.1016/0263-4368(95)92674-9 ↗
4. Luyckx · 2006
5. Characterization of WC–(WV)C–Co made from pre-alloyed (WV)C10.1016/j.ijrmhm.2008.09.020 ↗
6. Comparison of the mechanically alloyed (V, W)C and (V, W)C–Co powders10.1016/j.jallcom.2008.11.038 ↗
7. Zinyana J, Broccardo S, Harmar- Thibault S, Cornish L.A, Witcomb M.J, Allibert C.H, Luyckx S. Effect of composition on the (VW)C constitution in the V-W-C-Co alloys. 15th International Plansee Seminar, Reutte, 2001; 4: 291–8.
8. Determination of the composition range suitable to the formation of WC–(VW)Cx–Co materials10.1016/S0263-4368(01)00047-6 ↗
9. Phase transformation of cobalt induced by ball milling10.1063/1.113527 ↗
10. Synthesis of HCP, FCC, and BCC structure alloys in the Mg–Ti binary system by means of ball milling10.1016/j.jallcom.2009.01.086 ↗
11. Effect of C and milling parameters on the synthesis of WC powders by mechanical alloying10.1016/j.ijrmhm.2009.09.006 ↗
12. The evolution of solutions: a thermodynamic analysis of mechanical alloying10.1007/s11661-997-0176-5 ↗
13. Etude de nouveaux pnictures ternaires de metaux de transition isostructuraux des phases G, Ni16Mn6P7, Ni16Mn6As710.1016/0025-5408(83)90098-3 ↗
14. Structural chemistry of metal microclusters: questions and answers10.1134/S1087659609010015 ↗
15. Icosahedral coordination of phosphorus in the crystal structure of melliniite, a new phosphide mineral from the Northwest Africa 1054 acapulcoite10.2138/am.2006.2095 ↗
16. Solid-state transformation in nanocrystalline Ti induced by ball milling10.1016/j.matlet.2010.02.054 ↗
17. Microstructural development during the liquid-phase sintering of VC–Co alloys10.1007/BF00574935 ↗