Multilayer ceramics lamination

Next to tubes and fibers, tbin ceramic sheets are also a very interesting subject for the development of thermoplastic ceramic extrusion systems. It has been shown that it is feasible to produce ceramic sheets and films with thicknesses under 200 pm. Figure 8 shows a picture of a ceramic sheet made of silicon dioxide nanoparticles. This technique could, for example, be used for the fabrication of multilayer ceramic bodies (e.g. multilayer capacitors, structural laminates) which currently are produced using the tape casting process. Big advantages relative to this conventional process would be the recycleability of the thermoplastic feedstocks and the higher achievable powder loading. 

First presentation on multilayered ceramic packages prepared from tape-cast materials H. Stetson and B. Schwartz, "Laminates, New Approach to Ceramic Metal Manufacture Part 1 Basic Process." Am. Ceram. Soc. Bull., 40 [9] 584 (1961). 

The basis for the production of MLC and MLCC (multilayered ceramics and multilayered ceramic capacitors) is the ability to laminate together several layers of green tape to form a structure that sinters together into a monolithic solid ceramic part. This procedure for the lamination of green tape cast-sheets was invented in 1965 by W J. Gyurk of RCA. ... 

An isostatic lamination system capable of laminating multiple multilayer ceramic substrates in one rapid process. As shown in the upper left inset, these substrates are normally vacuum bagged and stacked on shelves that are lowered into the presstjre vessel of the machine. (Courtesy of Avure Autoclave Systems, Inc.). 

Patent filed by W. ]. Gyurk of RCA on the lamination of tape-cast ceramics to form multilayers,... 

Manufacturing Multilayered Monolithic Ceramic Bodies," U.S. Patent 3,192,086. Teaches the lamination procedure. 

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