Enhanced-wetting, boron-based liquid-metal ion source and method

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427 77, 427113, 4273766, 427399, 204298, 3133121, 31511181, B32B 900

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058718486

ABSTRACT:
A binary, boron-based alloy as a source for field-emission-type, ion-beam generating devices, wherein boron predominates in the alloy, preferably with a presence of about 60 atomic percent. The other constituent in the alloy is selected from the group of elements consisting of nickel, palladium and platinum. Predominance of boron in these alloys, during operation, promotes combining of boron with trace impurities of carbon in the alloys to form B.sub.4 C and thus to promote wetting of an associated carbon support substrate.

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Tohru Ishitani et al., "Carbon Needle Emitter For Boron And Aluminum Ion Liquid-Metal-Ion Sources," Jpn. J. Appl. Phys. 21, 277-278 (1982).

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