Influence of tape cast parameters on texture formation in alumina by templated grain growth

Templated grain growth (TGG) is known as one of the methods to introduce texture in ceramic materials. In order to obtain a highly textured ceramic material with TGG, it is crucial that the seeding particles are well aligned in the green product. Using the shear forces of the tape cast process makes it possible to align seeding particles with shape anisotropy. The influence of different tape cast process parameters on the formation of texture in alumina ceramics using platelet alumina seeding particles has been investigated and quantified. Experiments have been carried out in which the tape cast speed, the deairing time and the gap between doctor blade and carrier film were varied. Further the effect of the seeding particle concentration and the solids loading of the tape cast suspension are investigated. The results are presented in terms of pole figures and lotgering factors.