|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
||Studies on the Formation of Intermetallic Compound Layers in Co(W)-Zn Diffusion Couples
||Tamara Ebner, Nadine Körbler, Stefan Luidold, Christoph Czettl, Christian Storf
|On-Site Speaker (Planned)
Cemented carbides represent a composite material which consists of a hard phase and a binder metal. At the end of their product lifecycle these commodities can be recycled by the zinc process. In the first step of this method the scrap reacts with molten zinc at elevated temperatures, which forms intermetallic phases with the binder (Co), resulting in a disintegration of the material. By now the exact mechanism of this technique is not fully understood. Therefore, this research focuses on the transactions between the binder and the liquid zinc by analysing the formation of intermetallic phases via simultaneously varying decisive process parameters and the composition of the binder metal. Hence, this study provides information regarding the growth of intermetallic Co-Zn phases and emphasises the effect of dissolved tungsten in the binder on the formation of these compounds.