Fabrication of polycrystalline free-standing diamond films

Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step

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148DIG107, 156DIG68, 156DIG88, 264 81, 264234, 423446, 423461, 427226, 427249, 427577, 427585, 437925, 437946, 437966, C30B 2500

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051835290

ABSTRACT:
Method of fabricating free-standing diamond films by depositing and adhering polycrystalline diamond by hot filament chemical vapor deposition (1-100 Torr, filament temperature equal to or greater than 1900.degree. C., substrate temperature of 650.degree.-950.degree. C.) onto a substrate meltable at a temperature slightly in excess of the deposition temperature; and (b) prior to cooling said polycrystalline diamond particles, increasing (50.degree.-300.degree. C.) the substrate temperature to melt at least a portion thereof while permitting such melt to emigrate from the diamond films.

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