|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Nanocomposites V: Structure-Property Relationships in Nanostructured Materials
||Carbon Nanotubes Reinforced Nanostructured WC-Co Hard Alloys
||Guolong Tan, Chenglong Li, Xijun WU
|On-Site Speaker (Planned)
A novel approach for the synthesis of carbon nanotubes strengthened tungsten carbide hard alloys will be presented. Nanometer sized tungsten and cobalt powders were fabricated by reduction process and then carburized by C2H2 instead of CO and a fraction of decomposed carbons were in situ converted into carbon nanotubes. The composite WC-Co powders were subsequently hot pressed into bulk alloy. The hard alloys showed exceptionally high Vickers microhardness, with a maximum value up to 3307 kg/mm2. The carbon nanotubes with exceptionally high Young’s Modules (1.28 Tpa) plays a key role on enhancing the mechanical properties of WC-Co matrix alloys. Recently, this technique has been scaled up in a startup company termed as Nostan Company, the Vickers microhardness of these pilot produced alloys ranges from 2746 to 3925 kg/mm2, averaging at 3508 kg/mm2. The products could now be made in much larger size, such as d50×5mm, d19×16.
||Planned: Supplemental Proceedings volume