1
Department of Metallurgical Engineering PSG College of Technology, Coimbatore 641004, India
2
Kennametal India Private Limited Bangalore 560073, India
Abstract
The control of particle size distribution of tungsten powders is one of the key strategies in improving the performance of tungsten carbide powders for cutting tool applications. For example, grain coarsening of WC powders depends primarily on the prior grain size of tungsten powders during carburization. In this present work, effect of process parameters on reduction mechanism (Chemical vapour transport) of tungsten oxide to metallic tungsten has been extensively investigated, so as to control the uneven grain growth as well as to reduce the distribution span of the particle size to obtain the homogenized microstructure in the final sintered product. Various processing parameters such as powder layer thickness, hydrogen gas flow rate, powder feed rate and temperature have been modified in the trail experiments. Microstructural analysis was performed based on particle size distribution (PSD) and the average grain size of the reduced tungsten powders. These experimental findings can be implemented for cost effective feasible solution in high volume production unit of powder metallurgical industries.
J, K., S, H., G, S., Rao, R. S., & Chelliah, N. M. (2021). Effect Of Process Parameters On Particle Size Distribution Characteristics Of Tungsten Powders Reduced By Powder Metallurgy Route. Int. J. of Aquatic Science, 12(2), 3857-3870.
MLA
Krishnamoorthi J; Harshavardhanan S; Shivaram G; Ramesh S Rao; Nagaraj M Chelliah. "Effect Of Process Parameters On Particle Size Distribution Characteristics Of Tungsten Powders Reduced By Powder Metallurgy Route". Int. J. of Aquatic Science, 12, 2, 2021, 3857-3870.
HARVARD
J, K., S, H., G, S., Rao, R. S., Chelliah, N. M. (2021). 'Effect Of Process Parameters On Particle Size Distribution Characteristics Of Tungsten Powders Reduced By Powder Metallurgy Route', Int. J. of Aquatic Science, 12(2), pp. 3857-3870.
VANCOUVER
J, K., S, H., G, S., Rao, R. S., Chelliah, N. M. Effect Of Process Parameters On Particle Size Distribution Characteristics Of Tungsten Powders Reduced By Powder Metallurgy Route. Int. J. of Aquatic Science, 2021; 12(2): 3857-3870.