|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Fundamental Aspects and Modeling Powder Metal Synthesis and Processing
||Self-propagating High-temperature Synthesis for Synthesizing Tantalum Carbide from Ta Metal Scraps
||Jae-Jin Sim, Sang-Hun Choi, Won Ju, Won-Jung Choi, Basit Ali, Tae-Hyuk Lee, Kyung-Mook Lim, Bum-Sung Kim, Taek-Soo Kim, Kyoung-Tae Park
|On-Site Speaker (Planned)
For the grain refinement, Tantalum carbide (TaC) have been applied as the addictive in the field of WC base cemented materials. In this study, Self-propagating High-temperature Synthesis (shortly SHS) is selected and researched for preparation of TaC. Comparing with general carbothermic solid-state synthesis, SHS could achieved that it is more faster, need no more heat inducing without first ignition. In case of TaC synthesis adiabatic combustion temperature reaches to ca. 2,400C at that time it is possible to remove volatile impurities. Ta powders produced from metal scraps are used as the raw material of synthesis. Purity of Ta powder is around 98% because of using the scrap which origin is from turning, plate, target and critical impurities are Cu, Ti, Al, Zn, Fe and Nb. Focuses of this study are that impurities removing ability during the synthesis, optimum ratio of reductant, graphite powder, morphology of synthesized TaC particles.