Low temperature vapor phase digestion of graphite

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United States of America Patent

PATENT NO 9623371
APP PUB NO 20170087511A1
SERIAL NO

14867644

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Abstract

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A method for digestion and gasification of graphite for removal from an underlying surface is described. The method can be utilized to remove graphite remnants of a formation process from the formed metal piece in a cleaning process. The method can be particularly beneficial in cleaning castings formed with graphite molding materials. The method can utilize vaporous nitric acid (HNO3) or vaporous HNO3 with air/oxygen to digest the graphite at conditions that can avoid damage to the underlying surface.

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Patent Owner(s)

Patent OwnerAddress
BATTELLE SAVANNAH RIVER ALLIANCE LLCSAVANNAH RIVER SITE BLDG 773-51A RM 139 AIKEN SC 29808

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pierce, Robert A Aiken, US 4 36

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