Dynamic dehydriding of refractory metal powders

US8246903B2 · kind B2 · utility

Assignee

• H.C. STARCK INC. · US

Inventors

• Steven A. Miller · Pinellas Park, US
• Mark E. Gaydos · Nashua, US
• Leonid N. Shekhter · Ashland, US
• Gokce Gulsoy · Newton, US

Key dates

• Filing date: Sep 9, 2008
• Grant date: Aug 21, 2012
• Expiry date: Jan 20, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22F2999/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Refractory metal powders are dehydrided in a device which includes a preheat chamber for retaining the metal powder fully heated in a hot zone to allow diffusion of hydrogen out of the powder. The powder is cooled in a cooling chamber for a residence time sufficiently short to prevent re-absorption of the hydrogen by the powder. The powder is consolidated by impact on a substrate at the exit of the cooling chamber to build a deposit in solid dense form on the substrate.