The development of alumina green tapes, made of water based binder systems, allows the structuring by so-called cold embossing. The cold embossing disclaims time expensive heating and cooling phases as needed for hot embossing. That allows a reduction of process time. The structuring by embossing becomes more practicable for high throughput manufacturing. For investigating the influence of powder amount and with or without plasticizer inside ceramic green tapes on deformation behaviour, tensile tests have been carried out. Furthermore, cold embossing tests with uniaxial compression tools were carried out. Channel structures allow investigations concerning stability against elastic recovery. In a first series of tests various green tape compositions have been investigated. As results inferences to the elastic and plastic material behaviour can be obtained. The characterisation of structured tapes in green state has been carried out by using SEM and scanning surface area by confocal white light microscopy.
Hot embossing of ceramic green tape allows high throughput manufacturing. Tensile tests were carried out to investigate the embossing ability of alumina green tape at room temperature. The deformation behavior was analyzed based on powder content and the use or absence of plasticizer within the ceramic green tape. Furthermore, cold embossing tests with uniaxial compression tools were carried out. A channel structure was used as a test vehicle to allow investigations into stability against elastic recovery. In the first series of tests, various green tape compositions were investigated. Inferences were made, based on the elastic and plastic material behavior. The characterisation of structured tapes in the green state was carried out by using SEM and by scanning the surface area by confocal white light microscopy.
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