Conferência
Extending Horizon of Materials Processing with Solar Furnace: Solar-synthesis of raw material powders (carbides and carbonitrides) and solar-sintering of ceramic powder compacts with novel prospects of introducing unstable chemical species into the reaction system
Conferência
— 2002 — EDITORIAL CIEMAT
Informações chave
Autores:
Publicado em
01/02/2002
Resumo
Solar furnace (SF) yielding high flux of concentrated solar beam has been used for our recent trial syntheses of carbides and carbonitrides of Si and d-transition metals and, during the course of this series of preliminary work, we encountered several intriguing phenomena which cannot be interpreted in terms of available equilibrium phase relationships. These new evidences seem to indicate still unexploited potentiality of solar furnace as novel type of chemical reactor rather than mere ecological heat source replacing traditional electric furnace. Besides these raw materials powder synthesis experiments, we have been testing also potentiality of SF as a reactor for sintering oxide and non-oxide ceramic powders and found that mechanical properties of the solar-sintered specimen were comparable to those of the counterpart manufactured by the traditional industrial sintering process. As such, data gathered so far implicate great potentiality of SF as new type of chemical reactor. Introduction of unstable chemical species, such as non-graphitic carbon and NH3 gas with suppressed degree of dissociation, into the reaction system might further extend the range of producible materials in the SF. Thus, some review is also given concerning recent works involving usage of unstable chemical species emerging from a group at Osaka University.
Detalhes da publicação
Autores da comunidade :
Luís Manuel Guerra da Silva Rosa
ist11630
Editora
EDITORIAL CIEMAT
Título do contentor da publicação
Conferência
Local da conferência
Aguadulce (Almería, Spain)
Primeira página ou número de artigo
143
Última página
150
Domínio Científico (FOS)
materials-engineering - Engenharia dos Materiais
Idioma da publicação (código ISO)
eng - Inglês
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