Compositions of particles comprising rare-earth oxides in a metal alloy matrix and related methods

Title: Compositions of particles comprising rare-earth oxides in a metal alloy matrix and related methods

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A composition includes a metal alloy matrix comprising iron and a plurality of nanoparticles dispersed within the metal alloy matrix. Each nanoparticle of the plurality comprises an oxide of a rare-earth metal and at least one metal selected from the group consisting of tantalum, niobium, vanadium, and titanium. Some compositions include a metal alloy matrix comprising iron and a plurality of nanoparticles comprising at least two different oxides of rare-earth metals dispersed within the metal alloy matrix. Some methods include mixing an oxide of a rare-earth metal with a first metal and a second metal. Other methods include mixing a plurality of particles comprising at least one oxide of a rare-earth metal with a molten metal comprising iron. Each particle of the plurality may exhibit a density between about 6.9 g/cm.sup.3 and about 9.0 g/cm.sup.3.

Inventors:: Mariani, Robert D.; Porter, Douglas L.

Issue Date:: 2018-07-10

OSTI Identifier:: 1462962

Assignee:: Battelle Energy Alliance, LLC (Idaho Falls, ID) INL

Patent Number(s):: 10,017,843

Application Number:: 14/225,306

Contract Number:: AC07-05ID14517

Resource Relation:: Patent File Date: 2014 Mar 25

Research Org:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

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