Ceramic, green

FIGURE 6.9 Schematic diagram of the tape-casting process for producing a ceramic green film. 

We further investigated the removal of polymeric binder material with compressed gases from a ceramic green product. We have shown that this extraction is well possible without any dimensional change in the ceramic body [50]. The time necessary for such a supercritical extraction is only a fraction of the time needed for conventional controlled soft pyrolysis of the polymeric binders. 

Crystalline BaTi03prepared by hydrolysis of the alkoxide solutions in the form of dispersion without drying was successfully used to make a ceramic slip formulation, which was then cast as a ceramic green body for microcapacitors 1 to 50 pm thick. 

All plates contain vertical vias for electrical connection. The plates were realized as ceramic green tapes which a fired to a solid stack in the following way. 

In this chapter, we have described the colloid chemistiy of ceramic powders in suspension. Colloid stability is manipulated by electrostatic and steric means. The ramifications on processing have been discussed with emphasis on single-phase ceramic suspensions with a distribution of particle sizes and composites and their problems of component segregation due to density and particle size and shape. The next chapter will discuss the rheology of Uie ceramic suspensions and the mechanical behavior of dry ceramic powders to prepare the ground for ceramic green body formation. The rheology of ceramic suspensions depends on their colloidal properties. 

This rotational diffusion coefficient will be used in Chapter 13 to aid in determining if nonspherical particles will orient in shear flow as they are cast to make a ceramic green body. 

These mechanical properties are important in designing the equipment necessary to process the ceramic suspensions, pastes, and dry powders into ceramic green bodies. Each of the different raw materials... 

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