Getter device employing calcium evaporation
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United States of America Patent
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Jun 24, 2003
Grant Date -
N/A
app pub date -
Jun 22, 2000
filing date -
Jun 24, 1999
priority date (Note) -
Expired
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Abstract
A getter comprising a calcium-aluminum compound including about 39% to about 43% calcium by weight produces a calcium vapor when sufficiently heated. The calcium vapor can condense to form a calcium film on an inside surface of a sealed evacuated enclosure such as a CRT to getter reactive species from the enclosed volume. The calcium-aluminum compound, preferably CaAl.sub.2 powder, can be mixed with either nickel powder, titanium powder, or both.
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