Diffusion-coated metals
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United States of America Patent
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-
May 22, 1990
Issued Date -
N/A
app pub date -
Mar 23, 1987
filing date -
Jul 8, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Iron and nickel are activated by diffusing aluminum into their surface at low temperature, and then leaching out some of that aluminum with caustic. So activated they are extremely pyrophoric and have their pyrophoric action improved by short dip in acid solution having pH about 2 to about 4. Foils of such metals so treated can be folded to further increase pyrophoric action.
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