Two-component powder injection moulding is a promising technology for producing multifunctional components. The right choice of partner materials is essential since they have to match chemically, thermally, and technologically to assure good bonding. However, all requirements are rarely met at the same time. ZTA (zirconia toughened alumina) and ATZ (alumina toughened zirconia) are an interesting combination due to their high hardness and toughness, respectively. Despite of very good chemical compatibility, they differ in thermal expansion which introduces stresses during sintering and leads to failure. We present a method using ceramic tapes to create a bridge between the two feedstocks by generating a CTE-gradient. The tailored tapes consist of alumina-zirconia mixtures and are applied during the shaping process by inmould labelling. The compound is formed after co-debinding by co-sintering.
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