Dispersants tape casting

R. Moreno, The Role of Slip Additives in Tape-Casting Technology Part I - Solvents and Dispersants , Am Ceram. Soc. Bull., 71 [10] 1521-31 (1992). 

Zr02/SUS316 FGM was fabricated by tape casting method in an aqueous system. The dispersion state of ZrOz depended on the electrostatic stabilization and that of... 

Ceramic particles in organic liquid media behave differently from those in aqueous media. Many known ceramic-processing techniques involve fine particles dispersed in nonaqueous media. Some of the better known examples are tape casting of barium titanate and aluminum nitride powders and tape or slip casting, extrusion, and injection molding of ceramic high Tc superconductor powders. 

Moreno R (1992) The role of slip additives in tape casting technology, 1. Solvents and dispersants. Am Ceram Soc Bull 71 1521-1531... 

Alternative fabrication procedures for dispersion-reinforced glass matrix composites via wet routes have been developed such as slip and tape casting [117,118], as well as colloidal processing and sol-gel techniques [74]. 

Rheological methods are widely used to determine the properties of concentrated ceramic suspensions. Rheology can be used as an analysis method, e.g. when determining the optimal amount of dispersant from measurements of viscosity versus the amount of dispersant added. In addition, rheological measurements are often used for quality control in order to minimize the batch-to-batch variation before a ceramic suspension is processed further, e.g. spray dried or tape cast. The rheological behaviour can also be used as a direct process parameter, which should be appropriately adjusted to obtain the optimal green-body properties after forming. 

FigureS.S Microstructureofthesilicon nitride fabricated through dispersing 2vol% of [1-seed crystals into the raw powder slurry of a-phase and sintering additives and tape-casting it (a) parallel to and (b) perpendicular to the...

The texture development of equiaxed particles can be achieved using the TGG method, in which a minority of larger anisometric templated particles is dispersed in a matrix of relatively finer and equiaxed particles. The template particles in the mixture are aligned using the above-mentioned extrusion or tape-casting methods the tape-cast film is then thermally treated to initiate the densification process. The microstructure evolves with heating as shown schematically in Figure 18.20. When possible, template and matrix materials of the same composition are used, but... 

Maiti, A. K., Rajender., B. (2002). Terpineol as a dispersant for tape casting yttria stabilized zirconia powder. Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 333, 35. 

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