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Large grain cavities from pure niobium ingot

United States Patent

March 6, 2012
View the Complete Patent at the US Patent & Trademark Office
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Niobium cavities are fabricated by the drawing and ironing of as cast niobium ingot slices rather than from cold rolled niobium sheet. This method results in the production of niobium cavities having a minimum of grain boundaries at a significantly reduced cost as compared to the production of such structures from cold rolled sheet.
Myneni; Ganapati Rao (Yorktown, VA), Kneisel; Peter (Williamsburg, VA), Cameiro; Tadeu (McMurray, PA)
Jefferson Science Associates, LLC (Newport, News, VA)
11/ 099,247
April 5, 2005
The United States of America may have certain rights to this invention under Management and Operating Contract No. DE-AC05-84ER 40150 from the Department of Energy.