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Titolo:
Influence of gas environment on synthesis of silicon carbide and some carbides and carbonitrides of d-group transition metals through reaction between metal powders and amorphous carbon powders in a solar furnace at PSA (Plataforma Solar de Almeria)
Autore:
Martinez, D; Rodriguez, J; Rosa, LG; Fernandes, JC; Shohoji, N;
Indirizzi:
Ctrolar,st Energet Medioambientales & Tecnol, Ctr Europeo Ensayos Energia S Ctr Invest Energet Medioambientales & Tecnol Tabernas Spain 04200 rgia S Inst Super Tecn, Dept Mat Engn, P-1096 Lisbon, Portugal Inst Super Tecn Lisbon Portugal P-1096 Mat Engn, P-1096 Lisbon, Portugal Instadacl Engn & Tecnol Ind, Inst Mat & Tecnol Prod, Dept Tecnol Prod, Estr Inst Nacl Engn & Tecnol Ind Lisbon Portugal P-1699 ept Tecnol Prod, Estr
Titolo Testata:
JOURNAL DE PHYSIQUE IV
fascicolo: P3, volume: 9, anno: 1999,
pagine: 405 - 410
SICI:
1155-4339(199903)9:P3<405:IOGEOS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
BULK TUNGSTEN CARBIDES; CATALYTIC ACTIVITY; THERMODYNAMICS; OXYGEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Martinez, D Ctrolar,st Energet Medioambientales & Tecnol, Ctr Europeo Ensayos Energia S Ctr Invest Energet Medioambientales & Tecnol POB 22 TabernasSpain 04200
Citazione:
D. Martinez et al., "Influence of gas environment on synthesis of silicon carbide and some carbides and carbonitrides of d-group transition metals through reaction between metal powders and amorphous carbon powders in a solar furnace at PSA (Plataforma Solar de Almeria)", J PHYS IV, 9(P3), 1999, pp. 405-410

Abstract

Refractory carbides and carbonitrides including silicon carbide SiC, tungsten carbide WC, titanium carbide TiCx (0.5<x<1) and titanium carbonitride TiCxNy (0.5<x+y<1) were synthesised from compacted pellet composed of metal powders and amorphous carbon powders through heating in a solar furnace under controlled atmosphere (Ar or N-2) Under irradiation of the solar energy flux 1,350 kW/m(2) (ca. 1650 degrees C in terms of measured temperature) for 30 min in Ar atmosphere, Si, W and Ti were converted to SiC, WC and TiCx,respectively. By the similar reaction undertaken in N-2 atmosphere, Si andW were converted to SiC and WC, respectively, but carbonitride TiCxNy formed from Ti. No special influence of atmosphere was detected on the WC formation, but conversion to SiC from Si was somewhat retarded in N-2 atmosphere. In either Ar or N-2 atmosphere, progress of graphitisation of amorphous carbon was not detectable by X-ray diffraction analysis in the reaction withSi and Ti but graphitisation of amorphous carbon appeared to be significantly accelerated in the reaction with W.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 06:30:28