Setting the optimal technological parameters for producing ceramic substrates

Geometrically similar macroporous ceramic substrates were made from quasi homo-disperse corundum grains and glassy binding material. Technological parameters, such as optimal forming pressure depending on original grain size, optimal ratio of binding material, optimal homogenisation time and sintering temperature, were determined by designed experiments and multi-regression models. Methods have been developed to examine fracturisation of corundum grain fractions by laser granulometry and homogenisation of green powder by X-ray microanalysis. With our technology, pore size of substrates in the range of 30–500 μm depends only on original grain size.