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US 2006/0219336 A1Published application
Large grain cavities from pure niobium ingot
AssigneeSoutheastern Universities Research Association
InventorsGanapati Myneni, Peter Kneisel, Tadeu Cameiro
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Abstract
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.
Claims17
1) A method for the production of niobium cavities comprising:
- a) casting pure niobium ingot to form cast niobium ingot;
- b) slicing the cast niobium ingot to form slices of cast niobium ingot;
- c) drawing and ironing the slices of cast niobium ingot into cell halves;
- and
- d) welding the cell halves together to form a cavity.
2 more elements
8) A niobium cavity produced by a method comprising:
- a) casting pure niobium ingot to form cast niobium ingot;
- b) slicing the cast niobium ingot to form slices of cast niobium ingot;
- c) drawing and ironing the slices of cast niobium ingot into cell halves;
- and
- d) welding cell halves together to form a niobium cavity.
2 more elements
15) A niobium cavity half comprising niobium having an essentially as-cast grain structure.
Dependencies are inferred from the claim text.