Surface Chemistry of Ceramic Materials - Analysing Strategies and Model Associations

摘要

Within the framework of this work yttrium-stabilised zirconium oxide powders were studied and their differences concerning the processability, which could not be ascribed to physical properties like the BET-surface area or the grain size distribution, ascribed to chemical properties. The characterisation of surface species and sorption properties of the zirconia used took the centre stage of the studies. Surface and adsorbent species and thereby the chemical interactions between the surface sites and H{sub}2O were characterised using DRIFT- (Diffuse Reflectance Infrared Fourier Transform) spectroscopy, while the sorption properties of NH{sub}3 were analysed by TPD- (Temperature Programmed Desorption) experiments. The QFD (Quality Function Deployment) developed is presented. The QFD, in which the various analysing methods and process parameters are listed, reveals the relation between the process behaviour of the zirconium oxide powders and their specific surface-chemical properties.