Method for the manufacture of porous non-evaporable getter devices and getter devices so produced
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United States of America Patent
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Sep 7, 1993
Grant Date -
N/A
app pub date -
Mar 8, 1985
filing date -
Mar 16, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is described for the electrophoretic deposition, in the form of a porous coating, of at least one getter material and simultaneously an antisintering agent on any form of support. The getter material may be a powder of a metal, of a metal alloy or of a hydride thereof, or a mixture of these components. The getter material powders have a particle size less than 100 .mu. and an average particle size less than 60 .mu. but preferably greater than about 20 .mu.. The antisintering agent has a particle size of the same order of magnitude. After a heat treatment under vacuum the getter devices produced have an open porous structure and have good gas sorption properties. The support for the getter material can be graphite or a metal or a metal coated with ceramic.
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