Tape Casting Processing Of Ceramics

Ceramic forming techniques are ways of forming ceramics which are used to make everything from tableware such as teapots to engineering ceramics such as computer parts.

Tape casting processing of ceramics.

11 thin sheets of green ceramic cast as flexible tape. Tape casting is a process for producing thin single layer or stacked and laminated multilayer structures for which adequate thickness control is required. However after almost 60 years the usage of the tape casting process has become more broad in the ceramic industry. Tape casting thin sheets of a flexible tape are produced by casting.

In particular tape casting methods are used to make substrates for integrated circuits and the multilayer structures used in both integrated circuit packages and multilayer capacitors. The tape casting process converts ceramic powder to a thin film by making a liquid form of it casting it on a flat plane and drying it. Tape casting is a particle based technique thus ito nano particles are first dispersed and stabilized in organic solvents. This is the active component of the final product and the other contents such as binder.

The forming process takes place in the tape casting plant where the ceramic slurry is spread continuously over a conveyor belt with the help of a doctor blade to form a flat even layer. The ceramic raw powders and a dispersing agent are dispersed in a liquid and mixed with an organic binder system. As mentioned earlier the initial motivation for the tape casting process was to produce thin ceramic sheets for usage in capacitors. Methods for forming powders of ceramic raw materials into complex shapes are desirable in many areas of technology.

This slip contains a suspension of ceramics particles in an organic liquid that also contains binders and plasticizers to enhance strength and flexibility to cast. Other articles where tape casting is discussed. Tape casting is another process that was originally used with traditional ceramics but has achieved a high level of sophistication for advanced ceramics. This layer of slurry is subsequently dried and coiled ready for further processing.

Subsequently slurries are prepared using polyvinyl butyral binder and benzyl phthalate plasticizer. Pottery techniques include the potter s wheel slipcasting and many others. Some important examples of the different applications of tape casting are given below. These sheets are prepared from slips.

In particular tape casting methods are used to make substrates for integrated circuits and the multilayer structures used in both integrated circuit. Tape casting is preferably used for the production of large thin ceramic layers wide flat layers. The rheological behavior of the slurries is analyzed and adapted to the tape casting process.