Method of forming oxide dispersion strengthened alloys
AssigneeSDCmaterials, Inc.
InventorMaximilian A. Biberger
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Abstract
A method of forming an oxide-dispersion strengthened alloy and a method for forming an oxide-alloy powder where the oxide-nanoparticles are evenly distributed throughout the powder. The method is comprised of the steps of forming an oxide-nanoparticles colloid, mixing the oxide-nanoparticles colloid with alloy-microparticles forming an oxide-alloy colloid, drying the oxide-alloy colloid solution to form an oxide-alloy powder, applying pressure to the oxide-alloy powder, and heating the oxide-alloy powder to a sintering temperature. The oxide-nanoparticles are sized to be between 1-10 nanometers in diameter. The ratio of oxide-nanoparticles to alloy-microparticles should be 1-5% by weight. Heating of the oxide-alloy powder can use a spark plasma sintering process.
Claims14
A method of forming an oxide-dispersion strengthened alloy comprising the steps:
- a. mixing a first quantity of oxide-nanoparticles with a liquid forming a colloid of oxide-nanoparticles, wherein the oxide-nanoparticles are 1-5 nanometers in the largest dimension;
- b. mixing the colloid of oxide-nanoparticles with a second quantity of alloy-microparticles forming an oxide-alloy colloid, wherein the oxide-nanoparticles are substantially uniformly distributed throughout the colloid, and wherein substantially all of the oxide-nanoparticles adhere to the alloy-microparticles and not to the oxide-nanoparticles;
- c. drying the oxide-alloy colloid, forming an oxide-alloy powder;
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- d. heating the oxide-alloy powder to a sintering temperature.
A method of forming an oxide-alloy powder comprising the steps:
- a. mixing a first quantity of oxide-nanoparticles with a liquid forming a colloid of oxide-nanoparticles, wherein the oxide-nanoparticles are 1-5 nanometers in the largest dimension;
- b. mixing the colloid of oxide-nanoparticles with a second quantity of alloy-microparticles forming an oxide-alloy colloid, wherein the oxide-nanoparticles are substantially uniformly distributed throughout the colloid, and wherein substantially all of the oxide-nanoparticles adhere to the alloy-microparticles and not to oxide-nanoparticles;
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- c. drying the oxide-alloy colloid, forming an oxide-alloy powder.
Dependencies are inferred from the claim text.