W.c. Heraeus Gmbh & Co Kg

Franz Braun

David Francis Lupton

Wulf Kock

A method is provided for manufacturing a welded shaped body of platinum material dispersion-hardened by finely divided small particles of base metal oxide, especially such a body provided with at least one inside wall, such as a tube. The base metal oxide is one or more oxides of the elements yttrium, zirconium and cerium. The method includes shaping and welding of at least one part, especially a sheet, of an alloy of platinum and base metal, to a preform body, e.g. a tube. The preform body is then subjected to heat treatment in an oxidizing medium until the minimum degree of oxidation of the base metal reaches 75 wt %. The preform body is then formed into the desired product.

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Gelnhausen, Germany

Franz Braun