Characterization of Spherical Molybdenum Powders Prepared by RF Plasma Processing

Abstract:

Spherical molybdenum powders were synthesized by (RF) plasma with irregular molybdenum powders. The powder characteristics and spheroidization efficiency of the feeding rate for obtain the spherical molybdenum powders were studied. The phase composition and morphological properties of the powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). As a result, the fine spherical powders composed of pure molybdenum with favorable dispersity and its surface became smooth. The spheroidization efficiency of synthesized powders was almost 100 % at feeding rate of 5g/min. LMS analysis indicated that the as-prepared powder had narrow particle size distribution and the spheroidization efficiency of the sample decreases gradually as increasing of the feeding rate. The RF plasma spheroidization of molybdenum powder is an ideal route synthesis of well- spherical molybdenum powders used as near net-shape technology and powder metallurgy.

• Periodical: Advanced Materials Research (Volumes 482-484)
• Pages: 2563-2567
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.482-484.2563
• Online since: February 2012
• Authors: Yan Wei Sheng, Zhi Meng Guo, Jun Jie Hao
• Keywords: Powder Characteristics, RF Plasma, Spherical Molybdenum Powder, Spheroidization

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