Method for producing a component from a composite Al2O3/titanium aluminide material

US6322608A · kind A · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Tilmann Haug · Weißenhorn, DE
• Christoph HESSELMANN · Rheine, DE
• Steffen Rauscher · Herrenberg, DE
• Michael Scheydecker · Nersingen, DE

Key dates

• Filing date: May 17, 2000
• Grant date: Nov 27, 2001
• Expiry date: May 17, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00362
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing a component from an Al.sub.2 O.sub.3 /titanium aluminide composite material. To produce the component, a shaped body is pressed from a starting mix of titanium, in particular as an oxide, carbon and/or its precursors, fillers and binders. At a conversion temperature, the shaped body is subjected to a heat treatment in order to form a pressure-stable sacrificial body. In the process, the filler and, if appropriate, the binder is/are also removed by thermal means. The sacrificial body is filled with aluminum and/or an aluminum alloy under pressure. The filling takes place at a filling temperature which is above the conversion temperature. Then, the temperature is reduced to a transformation temperature, the materials of the filled sacrificial body and the aluminum reacting through a solid-state reaction, below the filling temperature, to form an Al.sub.2 O.sub.3 /titanium aluminide composite body.