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Titolo:
Photochemical effects in carbide synthesis of d-group transition metals (Ti, Zr; V, Nb, Ta; Cr, Mo, W) in a solar furnace at PSA (Plataforma Solar deAlmeria)
Autore:
Rodriguez, J; Martinez, D; Rosa, LG; Fernandez, JC; Amaral, PM; Shohoji, N;
Indirizzi:
Plataforma Solar Almeria, Ctr Europeo Ensayos Energia Solar, Ctr Invest Energet Medioambientales & Tecnol, Tabernas 04200, Spain Plataforma Solar Almeria Tabernas Spain 04200 nol, Tabernas 04200, Spain Inst Super Tecn, Dept Mat Engn, P-1049001 Lisbon, Portugal Inst Super Tecn Lisbon Portugal P-1049001 gn, P-1049001 Lisbon, Portugal Inst Nacl Engn & Tecnol Ind, Dept Mat & Tecnol Prod, P-1649038 Lisbon, Portugal Inst Nacl Engn & Tecnol Ind Lisbon Portugal P-1649038 8 Lisbon, Portugal
Titolo Testata:
JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME
fascicolo: 2, volume: 123, anno: 2001,
pagine: 109 - 116
SICI:
0199-6231(200105)123:2<109:PEICSO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
BULK TUNGSTEN CARBIDES; RICH URANIUM SESQUINITRIDE; AMORPHOUS-CARBON; CATALYTIC ACTIVITY; ALPHA-U2N3+X PHASE; GAS ENVIRONMENT; SILICON-CARBIDE; POWDERS; AMMONIA; THERMODYNAMICS;
Keywords:
titanium; zirconium; vanadium; niobium; tantalum; chromium; molybdenum; tungsten; carbide; amorphous carbno; graphite; solar furnace;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Rodriguez, J Plataforma Solar Almeria, Ctr Europeo Ensayos Energia Solar, Ctr Invest Energet Medioambientales & Tecnol, POB 22, Tabernas 04200, SpainPlataforma Solar Almeria POB 22 Tabernas Spain 04200 , Spain
Citazione:
J. Rodriguez et al., "Photochemical effects in carbide synthesis of d-group transition metals (Ti, Zr; V, Nb, Ta; Cr, Mo, W) in a solar furnace at PSA (Plataforma Solar deAlmeria)", J SOL ENERG, 123(2), 2001, pp. 109-116

Abstract

During the course of our recent series of solar carbide and carbonitride synthesis work for d-group transition elements (Ti,Zr;.V,Nb,Ta;Cr,Mo,W), we detected several intriguing evidences apparently indicative of involvement of photochemical effects in some reactions under solar radiation. Ij Acceleration of graphitization of amorphous carbon during carburization of W under solar radiation. 2) Promoted formation of high temperature mono-carbide phase of Mo under solar radiation at a temperature lower than the one indicated ill equilibrium phase diagram. 3) Formation of sub-carbide Ta2C besidesmono-carbide TaC in the carburization of Ta with amorphous carbon under solar radiation. Only mono-carbide TaC formed by the carburization of Ta withgraphite under solar radiation in accordance with the equilibrium phase diagram. These features were already published individually elsewhere. This article is the brief summary of the reported facts in our earlier publications. Although the results so-far-obtained are rather primitive and still lacking quantitative characterization, there seems to be no doubt that solar materials processing would open new routes for unique products, which cannotbe prepared through traditional industrial manufacturing processes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 13:13:28