New method for preparation of low oxygen Mo powder by reduction of MoO3 using Ca. (September 2014)

• Record Type: Journal Article
• Authors: Oh, J.-M.; Kim, W.; Lee, B.-K.; Suh, C.-Y.; Kim, H.-S.; Lim, J.-W.
• Is Part Of: Powder metallurgy. Volume 57:Number 4(2014)
• Page Start: 291
• Page End: 294
• Publication Date: 2014-09
• Subjects: Molybdenum, -- Powder, -- Oxygen, -- Reduction, -- Deoxidation; Powder metallurgy -- Periodicals; 671.3705
• DOI: 10.1179/1743290113Y.0000000083
• Languages: English
• ISSNs: 0032-5899

Abstract

Abstract : A new method for the reduction of MoO3 using Ca as a reducing agent was developed. A low oxygen Mo powder can thus be prepared by two-step reduction process: the first step reduction involves a contact type method while the second step reduction uses a non-contact type method involving Ca vapour followed by additional deoxidation. The oxygen concentration in the resultant Mo powder was ∼2800 ppm, which was much lower than that of commercial Mo powder (>4400 ppm).