Methods for reducing carbon contamination when melting highly reactive alloys
First Claim
Patent Images
1. A method for reducing carbon contamination when melting highly reactive titanium aluminide alloys comprising:
- providing a graphite crucible having an interior;
applying a first protective layer comprising a foil liner to the interior of the graphite crucible;
applying a second protective layer comprising a carbide coating to the interior of the graphite crucible on top of the first protective layer;
placing a highly reactive titanium aluminide alloy into the crucible having the first protective layer and the second protective layer; and
melting the highly reactive titanium aluminide alloy to a temperature of from about 1370°
C. to about 1700°
C. to obtain a melted titanium aluminide alloy having reduced carbon contamination.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods for reducing carbon contamination when melting highly reactive alloys involving providing a graphite crucible having an interior, applying at least a first protective layer to the interior of the graphite crucible, placing a highly reactive alloy into the crucible having the first protective layer, and melting the highly reactive alloy to obtain a melted alloy having reduced carbon contamination.
23 Citations
7 Claims
-
1. A method for reducing carbon contamination when melting highly reactive titanium aluminide alloys comprising:
-
providing a graphite crucible having an interior; applying a first protective layer comprising a foil liner to the interior of the graphite crucible; applying a second protective layer comprising a carbide coating to the interior of the graphite crucible on top of the first protective layer; placing a highly reactive titanium aluminide alloy into the crucible having the first protective layer and the second protective layer; and melting the highly reactive titanium aluminide alloy to a temperature of from about 1370°
C. to about 1700°
C. to obtain a melted titanium aluminide alloy having reduced carbon contamination. - View Dependent Claims (2, 3, 4)
-
-
5. A method for reducing carbon contamination when melting highly reactive titanium aluminide alloys comprising:
-
providing a graphite crucible having an interior; applying a first protective layer comprising a carbide coating to the interior of the graphite crucible; applying a second protective layer comprising a foil liner to the interior of the graphite crucible on top of the first protective layer; placing a highly reactive titanium aluminide alloy into the crucible having the first protective layer and the second protective layer; and melting the highly reactive titanium aluminide alloy to a temperature of from about 1370°
C. to about 1700°
C. to obtain a melted titanium aluminide alloy having reduced carbon contamination. - View Dependent Claims (6, 7)
-
Specification