Zirconium-based alloy metallic glass and method for forming a zirconium-based alloy metallic glass

US9499891B2 · kind B2 · utility

Assignees

• HERAEUS DEUTSCHLAND GMBH & CO. KG · DE
• Heraeus Materials Technology North America LLC · US

Inventors

• Hans Jürgen WACHTER · Neuenstadt am Kocher, DE
• Frank Krüger · Könnern, DE
• Bernd Kunkel · Phoenix, US
• Xiaoyun Wang · Beijing, CN
• Doug Shearer · Tempe, US

Key dates

• Filing date: Aug 23, 2013
• Grant date: Nov 22, 2016
• Expiry date: Feb 5, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21D2201/03
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A class of alloys is provided that form metallic glass upon cooling below the glass transition temperature Tg at a rate below 100° K/sec. The alloys have a high value of temperature difference (DT) between the crystallization temperature (Tx) and the glass transition temperature (Tg) of the intermetallic alloy. Such alloys comprise zirconium in the range of 70 to 80 weight percent, beryllium in the range of 0.8 to 5 weight percent, copper in the range of 1 to 15 weight percent, nickel in the range of 1 to 15 weight percent, aluminum in the range of 1 to 5 weight percent and niobium in the range of 0.5 to 3 weight percent, or narrower ranges depending on other alloying elements and the critical cooling rate and value of DT desired. Furthermore, methods are provided for making such metallic glasses.