Crucibles for melting titanium alloys

US8048365B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Bernard Patrick Bewlay · Niskayuna, US
• Brian Michael Ellis · Mayfield, US
• Michael Francis Xavier Gigliotti · Scotia, US
• Thomas Joseph Kelly · Cincinnati, US
• Mohamed Rahmane · Clifton Park, US
• Stephen Francis Rutkowski · Duanesburg, US
• Michael James Weimer · Loveland, US
• Joseph Carl Wukusick · Cincinnati, US

Key dates

• Filing date: Sep 28, 2007
• Grant date: Nov 1, 2011
• Expiry date: Jan 5, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Crucibles for melting titanium alloys having a facecoat including at least one facecoat layer containing an oxide selected from scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series oxide, and combinations thereof, and a backing including at least one backing layer where the crucible has a backing to facecoat thickness ratio of from about 6.5:1 to about 20:1.