Method for manufacturing a welded shaped body dispersion-hardened platinum material

US6129997A · kind A · utility

Assignee

• W.C. Heraeus GmbH & Co. KG · DE

Inventors

• Franz Braun · Borken, DE
• Wulf Kock · Alzenau, DE
• David Francis Lupton · Gelnhausen, DE

Key dates

• Filing date: Mar 10, 1999
• Grant date: Oct 10, 2000
• Expiry date: Mar 10, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/12875
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

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.