title: Influence of oxygen concentration on mechanical properties of molybdenum powder during sintering.
abstract: In this study, the influence of oxygen concentration on the mechanical properties of sintered bodies produced from commercial and low-oxygen molybdenum powder via pulsed-current-activated sintering was determined. The hardness of the sintered bodies increased with the sintering temperature up to 1,500 degrees C and then decreased with further temperature increase. The hardness of the sintered low-oxygen-molybdenum body was slightly higher than the rest of the sintered bodies. This was because the relative density of the sintered low-oxygen-molybdenum body increased more than that of others as the sintering temperature increased. Furthermore, the grain size of the sintered commercial-molybdenum body was larger than that of the sintered low-oxygen-molybdenum body. This was attributed to the positive effect of molybdenum oxide on grain growth during sintering. Thus, it was established that low-oxygen molybdenum powder can suppress grain growth during sintering, resulting in improved mechanical properties of the sintered bodies.
authors.forename: Back-Kyu
authors.initials: BK
authors.lastname: Lee
authors.forename: Jung-Min
authors.initials: JM
authors.lastname: Oh
authors.forename: In-Jin
authors.initials: IJ
authors.lastname: Shon
authors.forename: Hyung-Seok
authors.initials: HS
authors.lastname: Kim
authors.forename: Jae-Won
authors.initials: JW
authors.lastname: Lim