Method of preparing alloy compositions

Patent · Tue Jan 02 04:00:00 EST 1990

OSTI ID:6955920

Corwin, J M

This patent describes a method of improving the oxidation resistance of an existing crystalline nickel-based alloy composition. It comprises the steps of: providing an existing crystalline nickel-based alloy comprising: nickel; chromium; and at least one additional alloy element selected from the group consisting of nickel, chromium, molybdenum, manganese, silicon, carbon, vanadium, cobalt, copper, nitrogen, titanium, zirconium, aluminum, and mixtures thereof, wherein any addition of nickel from the group includes a further addition of a second element selected from the group; and adding to the nickel-based alloy a dopant selected from the group consisting of lithium, sodium, potassium, and mixtures thereof. The dopant being added in an amount sufficient to show a significant and reproducible improvement in one or more oxidation resistant properties of the final composition of the nickel-based alloy.

• Assignee: Chrysler Motors Corp., Highland Park, MI
• Patent Number(s): US 4891183; A
• Application Number: PPN: US 6-938181A
• OSTI ID: 6955920
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
CARBON ADDITIONS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
COBALT ALLOYS
COPPER ALLOYS
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
MANGANESE ALLOYS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NITROGEN ADDITIONS
SILICON ALLOYS
SYNTHESIS
TITANIUM ALLOYS
VANADIUM ALLOYS
ZIRCONIUM ALLOYS