Gold-free platinum material dispersion-strengthened by small, finely dispersed particles of base metal oxide
AssigneeW.C. Heraeus GmbH
InventorsHarald Manhardt, David Francis Lupton, Wulf Kock
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Abstract
A gold-free platinum material that is dispersion-strengthened by small, finely dispersed particles of base metal oxide. The base metal is either 0.01-0.5 wt. % Sc or a mixture/alloy of Sc and at least one metal from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %.
Claims26
A gold-free platinum material comprising small, finely dispersed particles of base metal oxide that dispersion-strengthen the material, the base metal being one of the group consisting of Sc in an amount of 0.0 1-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %, the material being one of the group consisting of dispersion-strengthened platinum, dispersion-strengthened platinum-rhodium alloy, and dispersion-strengthened platinum-iridium alloy.
A process for producing a gold-free platinum material that is dispersion-strengthened by small, finely dispersed particles of base metal oxide, comprising the steps of:
- melting a platinum/base metal alloy;
- casting the alloy;
- and oxidizing the alloy by a heat treatment, a base metal of the alloy being one of the group consisting of Sc in an amount of 0.01-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %, the material being one of the group consisting of platinum, platinum-rhodium alloy, and platinum-iridium alloy.
A dispersion-strengthened platinum material for equipment used in the glass industry, comprising small, finely dispersed particles of, base metal oxide that dispersion-strengthen the material, the base metal being one of the group consisting of Sc in an amount of 0.01-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %, the material being one of the group consisting of dispersion-strengthened platinum, dispersion-strengthened platinum-rhodium alloy, and dispersion-strengthened platinum-iridium alloy.
A dispersion-strengthened platinum material for equipment to be used in a laboratory, comprising small, finely dispersed particles of base metal oxide that dispersion-strengthen the material, the base metal being one of the group consisting of Sc in an amount of 0.01-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %, the material being of one the group consisting of dispersion-strengthened platinum, dispersion-strengthened platinum-rhodium alloy, and dispersion-strengthened platinum-iridium alloy.
A process for producing a cladding, comprising the steps of:
- providing a dispersion-strengthened platinum material comprising small, finely dispersed particles of base metal oxide that dispersion-strengthen the material, the base metal being one of the group consisting of Sc in an amount of 0.0 1-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %;
- and cladding an article with the material.
A welding filler metal comprising a gold-free platinum material, which contains a base metal and can be at least partially oxidized to form a dispersion-strengthened platinum material having small, finely dispersed particles of base metal oxide that dispersion-strengthen the material, the base metal being one of the group consisting of Sc in an amount of 0.01-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %.
A platinum material comprising small, finely dispersed particles of base metal oxide that dispersion-strengthen the material, the base metal being one of the group consisting of Sc in an amount of 0.01-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %, scandium being a yttrium substitute.
A process for producing platinum materials comprising the steps of:
- melting a platinum/base metal alloy;
- casting the alloy;
- oxidizing the alloy by a heat treatment, a base metal of the alloy being one of the group consisting of Sc in an amount of 0.01-0.5 wt. % and a mixture/alloy of Sc and at least one metal selected from the group consisting of Zr, Y, and Ce with a total base metal content of 0.05-0.5 wt. %;
- and using scandium as a yttrium substitute.
Dependencies are inferred from the claim text.