Increasing the strength of iridium, rhodium, and alloys thereof

US8613788B2 · kind B2 · utility

Assignee

• Heraeus Materials Technology GmbH & Co. KG · DE

Inventors

• Uwe Hortig · Niederrodenbach, DE
• Verena Baier · Wörth an der Donau, DE
• Harald Manhardt · Bruchköbel, DE
• Oliver Warkentin · Pfungstadt, DE
• David Francis Lupton · Gelnhausen, DE

Key dates

• Filing date: Jun 28, 2010
• Grant date: Dec 24, 2013
• Expiry date: Feb 1, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22F1/14
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The addition of 0.5 to 30 ppm boron and 0.5 to 20 ppm calcium to iridium and the Zr- and Hf-free alloys thereof and rhodium and the Zr- and Hf-free alloys thereof surprisingly increases the creep rupture strength at high temperatures, in particular around 1,800° C.