Abstract
For some years now, the production of WC-Co hardmetals via the powder-based additive manufacturing process binder jetting has been pursued. Compared to alternative AM processes Binder jetting offers the possibility of high production. Due to the powder-based process, the green bodies usually have a low green density, which means that only higher Co contents with lower resulting hardness’s are possible. By choosing the right starting powder and a suitable post-processing, the previous limits can be extended, and the appropriate powder can be chosen depending on the application. In the context of this study, the correlation between different WC-Co starting powders with different morphologies is investigated and evaluated for their processability in the BJT process and for the resulting mechanical properties of sintered components.
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