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1. WO1990012485 - MULTIPLE SOURCE EVAPORATION FOR ALLOY PRODUCTION

Publication Number WO/1990/012485
Publication Date 01.11.1990
International Application No. PCT/GB1990/000610
International Filing Date 20.04.1990
Chapter 2 Demand Filed 20.11.1990
IPC
C23C 14/24 2006.01
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
22characterised by the process of coating
24Vacuum evaporation
CPC
C23C 14/243
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
14Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
22characterised by the process of coating
24Vacuum evaporation
243Crucibles for source material
Applicants
  • THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND [GB]/[GB] (AllExceptUS)
  • BICKERDIKE, Robert, Lewis [GB]/[GB] (UsOnly)
  • BISHOP, Alan, William [GB]/[GB] (UsOnly)
  • BRAY, David, John [GB]/[GB] (UsOnly)
  • GARDINER, Robert, William [GB]/[GB] (UsOnly)
  • VINEY, Brian, William [GB]/[GB] (UsOnly)
Inventors
  • BICKERDIKE, Robert, Lewis
  • BISHOP, Alan, William
  • BRAY, David, John
  • GARDINER, Robert, William
  • VINEY, Brian, William
Agents
  • LOCKWOOD, Peter, Brian
Priority Data
8909088.021.04.1989GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTIPLE SOURCE EVAPORATION FOR ALLOY PRODUCTION
(FR) FABRICATION D'ALLIAGES PAR EVAPORATION A PARTIR DE SOURCES DE VAPEUR MULTIPLES
Abstract
(EN)
An improved method and apparatus for the production of alloys by a process of evaporating and condensing constituent vapours utilises at least two evaporation sources communicating with a conduit which has a single discharge outlet facing a collector. Means are provided to heat the walls of the conduit to a temperature at least as high as the hottest source to suppress condensation and to promote mixing of the respective vapour streams by scattering from the hot walls. In a preferred arrangement sources (1, 2) are mounted vertically, one above the other, in a flue (4) heated by radiant heater (7). The flue radiates heat onto second source (2). The more volatile constituent is evaporated from lower source (1) by heater (6) and its vapour flows upwards past second source (2) into mixing zone (8). Here it mixes with vapour from source (2) and the mixture passes from the flue onto collector (5).
(FR)
Appareil et procédé améliorés pour la fabrication d'alliages par l'évaporation et la condensation de vapeurs comprenant l'utilisation d'au moins deux sources d'évaporation qui communiquent avec un conduit muni d'une seule sortie de décharge orientée vers un récipient. On prévoit des moyens pour chauffer les parois dudit conduit à une température qui est au moins aussi élevée que celle de la source la plus chaude de manière à supprimer la condensation et à provoquer le mélange des divers écoulements de vapeurs par leur diffusion sur les parois chaudes. Dans une réalisation préférée, les sources (1, 2) sont montées verticalement, l'une au-dessus de l'autre sur une gaine (4) chauffée par un radiateur chauffant (7). Ladite gaine envoie de la chaleur, par radiation, à la deuxième source (2). On évapore le constituant le plus volatil de la source inférieure (1) au moyen du radiateur (6) et ladite vapeur en montant passe devant la deuxième source (2) pour aboutir à la zone de mélange (8). Dans ladite zone, la vapeur se mélange avec la vapeur de la source (2), et le mélange ainsi obtenu passe de la gaine au récipient (5).
Also published as
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