Carburization of ammonium paratungstate by methane: The influence of reaction parameters

International Journal of Refractory Metals and Hard Materials

Volumn 27, Issue 1, 2009, Pages 43-47

  de Medeiros, F F P ^a   da Silva, A G P ^b   de Souza, C P ^a   Gomes, U U ^a  

^a FEDERAL UNIVERSITY OF RIO GRANDE DO NORTE   (Brazil)

^b UNIVERSIDADE ESTADUAL DO NORTE FLUMINENSE DARCY RIBEIRO   (Brazil)

Author keywords

Ammonium paratungstate; Carburization; Gas solid reaction; Tungsten carbide

Indexed keywords

CARBON BLACK; CLADDING (COATING); INDUSTRIAL ECONOMICS; METHANE; POWDERS; TUNGSTEN; TUNGSTEN CARBIDE; TUNGSTEN COMPOUNDS;

AMMONIUM PARATUNGSTATE; CARBURIZATION; FINE GRAINED; GAS-SOLID REACTION; LOW TEMPERATURE; REACTION PARAMETERS; SOLID-SOLID REACTIONS; SPECIFIC SURFACES; TUNGSTEN POWDERS;

AMMONIUM COMPOUNDS;

EID: 53549101629     PISSN: 02634368     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ijrmhm.2008.03.001     Document Type: Article

References (13)

1. Brookes K. World directory and handbook of hardmetals and hard materials. International carbide data. 6th ed. 1996. p. 21.
2. Prakash L.J. Application of fine grained tungsten carbide based cemented carbides. Int J Refract Met Hard Mat 13 (1995) 257-264
3. Levy R.B., and Boudart M. Platinum-like behavior of tungsten carbide in surface catalysis. Science 181 4099 (1973) 547-549
4. Zeiler B. The potential of conventional tungsten carbide powder manufacturing. In: Kneringer G, Rodhammer P, Wilhartitz P, editors. 14th International plansee seminar. 1997. HM 13.
5. 2 mixtures leading to bulk tungsten carbide powder catalysts. J Catal 189 1 (2000) 170-183
6. 4 and hydrogen content in the carburizing mixture. J Solid State Chem 154 (2000) 412-426
7. Wanner S., Hilaire L., Wehrer P., Hindermann J.P., and Maire G. Obtaining tungsten carbides from tungsten bipyridine complexes via low temperature thermal treatment. Appl Catal A 203 (2000) 55-70
8. Medeiros F.F.P., de Oliveira S.A., de Souza C.P., da Silva A.G.P., Gomes U.U., and de Souza J.F. Synthesis of tungsten carbide through gas-solid reaction at low temperatures. Mat Sci Eng A 315 (2001) 58-62
9. Medeiros FFP, de Souza CP, da Silva AGP, Gomes UU, Sasaki JM. Synthesis of WC powder from ammonium paratungstate by gas-solid reaction, submitted for publication.
10. Clar E. Obtention of fine grained simple and mixed metallic carbides. Doctorate thesis, Faculty of Science, University of Lyon, France, 1964. p. 23-5 [in French].
11. da Costa FA, de Medeiros FFP, da Silva AGP, Gomes UU, Filgueira M, de Souza CP. Structure and hardness of a hard metal alloy prepared with a WC powder synthesized at low temperature. Mat Sci Eng A, in press. doi: 10.1016/j.msea.2007.08.058.
12. Haubner R., Schubert W.-D., Lassner E., Schreiner M., and Lux B. Mechanism of technical reduction of tungsten, Part I. Int J Refract Met Hard Mat 2 3 (1983) 108-115
13. Haubner R., Schubert W.-D., Lassner E., Schreiner M., and Lux B. Mechanism of technical reduction of tungsten, Part II. Int J Refract Met Hard Mat 2 4 (1983) 156-163