Refractory metal plates
AssigneeH.C. Starck GmbH
InventorsPeter R. Jepson, Dincer Bozkaya
Life of this patent
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Abstract
A refractory metal plate is provided. The plate has a center, a thickness, an edge, a top surface and a bottom surface, and has a crystallographic texture (as characterized by through thickness gradient, banding severity; and variation across the plate, for each of the texture components 100//ND and 111//ND, which is substantially uniform throughout the plate.
Claims20
A refractory metal plate having a center, a thickness, an edge, a top surface and a bottom surface, the refractory metal plate having a crystallographic texture as characterized by through thickness gradient, banding severity;
- and variation across the plate, for each of the texture components 100//ND and 111//ND using electron back-scatter diffraction with a 15 μm step in both the horizontal and vertical directions for each measurement, wherein the average through-thickness gradient is less than or equal to 3% per mm for 100//ND and 111//ND.
A refractory metal plate having a center, a thickness, an edge, a top surface and a bottom surface, the refractory metal plate having a crystallographic texture as characterized by
- through thickness gradient;
- banding severity;
- and
- variation across the plate,
- for the texture components 100//ND and 111//ND using electron back-scatter diffraction with a 15 μm step in both the horizontal and vertical directions for each measurement,
- wherein the average banding severity is less than or equal to 6% for 100//ND and 111//ND;
- wherein the refractory metal plate is manufactured by ingot metallurgy.
A refractory metal plate having a center, a thickness, an edge, a top surface and a bottom surface, the refractory metal plate having a crystallographic texture as characterized by
- banding severity for the texture components 100//ND and 111//ND using electron back-scatter diffraction with a 15 μm step in both the horizontal and vertical directions for each measurement,
- wherein the average banding severity is less than or equal to 5% for 100//ND and 111//ND.
Dependencies are inferred from the claim text.