Surface texturing inside ceramic macro/micro channels


Salamon, David and Lammertink, Rob G.H. and Wessling, Matthias (2010) Surface texturing inside ceramic macro/micro channels. Journal of the European Ceramic Society, 30 (6). pp. 1345-1350. ISSN 0955-2219

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Abstract:Surface textures (roughness) inside of macro/micro channels have a number of potential uses in advanced ceramic applications, including areas such as bioceramic, cooling, microreactors or friction control. The presented microtemplating method is dealing with templating of structured fibres, which results in formation of variation in surface textures and roughness. Effect of the microtemplate skin texture and ceramic slurry behaviour has been investigated and discussed. Porosity and defects of the microtemplate skin play a key role for roughness/texture of sintered microchannels if their size is larger than the ceramic grain size. The surface roughness inside the micro/macro channel can be easily changed from Ra = 0.8 μm to Ra = 4.9 μm just by changing the microtemplate skin porosity. The results demonstrate possibilities to use this method to tailor surface texture inside microchannels in a one step procedure
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