Affiliation:
1. Global Tungsten and Powders
2. Rhenium Alloys Inc.
3. Elmet Technologies LLC
Abstract
Abstract
Refractory metals are extracted from ore concentrates or scrap, processed into intermediate chemicals, and then reduced to metal, usually in powder form. This article discusses the raw materials needed and the processing steps for producing pure and alloyed refractory metal powders. The effects of processing conditions on the physical and chemical properties of tungsten, molybdenum, tantalum, niobium, and rhenium powders are reviewed.
Reference29 articles.
1. Tungsten
2. Tungsten
3. Modern Hydrometallurgical Production for Tungsten;Gaur;J. Met.,,2006
4. From Tungsten Concentrates and Scrap to Highly Pure Ammonium Paratungstate (APT);Lassner;Int. J. Refract. Met. Hard Mater.,,1995