Methods for reducing carbon contamination when melting highly reactive alloys
AssigneeGeneral Electric Company
InventorsThomas Joseph Kelly, Michael James Weimer, Bernard Patrick Bewlay, Michael Francis Xavier Gigliotti, Jr.
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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.
Claims7
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.
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.
Dependencies are inferred from the claim text.