Method for producing a chromium carbide-nickel chromium atomized powder
AssigneePraxair S.T. Technology, Inc.
InventorsWilliam John Crim Jarosinski, Lewis Benton Temples, Calvin Henry Londry
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Abstract
A method for producing an atomized powder of chromium carbide particles dispersed in a nickel chromium matrix in which chromium in the powder is from 55 to 92 weight percent of the powder.
Claims19
A method for producing an atomized powder of chromium carbide particles dispersed in a nickel chromium matrix, comprising the steps of melting chromium, carbon and nickel to form a molten liquid stream and then impinging an atomizing fluid selected from the group consisting of gas, liquid, and mixtures thereof at a pressure sufficient to break up the liquid stream into droplets having a diameter between 1 and 300 micrometers and then solidifying the droplets to form an atomized powder of chromium carbide phases dispersed in a metal nickel chromium matrix, said matrix comprising chromium in an amount in weight percent of the atomized powder from 55 to 92;
- nickel in an amount in weight percent of 5 to 40 of the atomized powder;
- and carbon in an amount in weight percent of 1 to 10 of the atomized powder.
An atomized powder of chromium carbide particles dispersed in a nickel chromium matrix contains chromium in an amount in weight percent of the atomized powder from 55 to 92;
- nickel in an amount in weight percent of 5 to 40 of the atomized powder;
- and carbon in an amount in weight percent of 1 to 10 of the atomized powder.
Dependencies are inferred from the claim text.