Conference
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
Key information
Authors:
Published in
02/01/2002
Abstract
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.
Publication details
Authors in the community:
Luís Manuel Guerra da Silva Rosa
ist11630
Publisher
EDITORIAL CIEMAT
Title of the publication container
Conferência
Location of the conference
Aguadulce (Almería, Spain)
First page or article number
143
Last page
150
Fields of Science and Technology (FOS)
materials-engineering - Materials engineering
Publication language (ISO code)
eng - English
Rights type:
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