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AssigneeCookson Precious Metals Ltd.
InventorsParastoo Jamshidi, Moataz Mohammad Mahmoud Attallah, Biao Cai, Ian Campbell, Selassie Dorvlo
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The present invention provides a method (1) of additively manufacturing an article comprising an oxide dispersion strengthened alloy, the method comprising: (5) providing a first powder comprising particles of one or more platinum group metals or an alloy thereof: (10) providing a second powder comprising particles of one or more non-platinum-group metals or metalloids, or one or more alloys thereof: (15) providing a third powder by mixing the first powder and the second powder, the third powder comprising from 0.01 to 1 wt. % of the second powder, based on the total weight of the third powder; and (20) forming an article by a powder bed fusion method using the third powder in an atmosphere comprising from greater than 0 to 2 mol. % oxygen.
A method of additively manufacturing an article comprising an oxide dispersion strengthened alloy, the method comprising:
A method of additively manufacturing an article comprising an oxide dispersion strengthened alloy, the method comprising:
The method of any of the preceding claims, wherein the second powder comprises particles of zirconium and/or yttrium and/or an alloy thereof.
A method of additively manufacturing an article comprising an oxide dispersion strengthened alloy, the method comprising:
The method of any of the preceding claims, wherein the particles of the first powder have a D90 of 90 μm or less and/or the particles of the second or oxide powder have a D90 of 10 μm or less.
The method of any of the preceding claims further comprising a step of forming the first powder by atomizing one or more platinum group metals or an alloy thereof.
The method of any of the preceding claims, wherein the one or more platinum group metals or alloy thereof is a platinum group metal alloy, preferably comprising platinum and one or more of rhodium, ruthenium and iridium, together with any unavoidable impurities.
The method of any of the preceding claims, wherein the third powder is provided by mixing the first powder and the second powder in a powder mixer or wherein the mixed powder is provided by mixing the first powder and the oxide powder in a powder mixer, preferably for at least 30 minutes.
The method of any of the preceding claims, wherein the article is a bushing for glass fibre production.
The method of any of the preceding claims, wherein the article is for high-temperature applications.
An additively manufactured article manufactured by a method according to any of the preceding claims.
Dependencies are inferred from the claim text.