Synthesis of WC Nanosized Powder by the Plasma Arc Discharge Process |
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| Journal | Key Engineering Materials (Volumes 336 - 338) |
|---|---|
| Volume | High-Performance Ceramics IV |
| Edited by | Wei Pan and Jianghong Gong |
| Pages | 2086-2088 |
| DOI | 10.4028/www.scientific.net/KEM.336-338.2086 |
| Citation | Seoung Soo Lee et al., 2007, Key Engineering Materials, 336-338, 2086 |
| Online since | April, 2007 |
| Authors | Seoung Soo Lee, Dong Won Joo, Yeon Gil Jung, Chul Jin Choi |
| Keywords | Nanosized Powder, Plasma Arc Discharge, Tungsten Carbide, X-Ray Diffraction (XRD) |
| Abstract | WC nanosized powders are synthesized by the plasma arc discharge process and annealing under an inert (Ar) atmosphere. The high temperature used during discharging at local region causes the work-piece and electrode to melt and evaporate. The melted tungsten on the arc discharge electrode and carbon arising from decomposition CH4 gas forms WC1-x nanosized powders. The WC1-x phase is encapsulated in a amorphous carbon shell. The WC1-x nanosized particles are annealed at 1200~1400°C under an Ar atmosphere. The WC1-x nanosized powder is transformed to the W2C phase, and then it becomes WC above at 1400°C. |
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