Electroceramic materials

Moulson, A.J. and Herbert, J.M. (1990) Electroceramics Materials, Properties, Applications (Chapman and Hall, London). 

It will be apparent from the contents page that the paragraph on electroceramics is one of the most elaborate of chapter 11 Seven Ceramic Branches of Industry. The main reason for this can be found in the large number of applications but also in the fact that the market for electroceramic materials is expected to grow considerably. This marktet, in its turn, is propelled by the strong desire to make electrical components of devices increasingly smaller. Table 11.4.1 shows a 2 thousand million dollar turnover for sophisticated electroceramic materials in Europe in 1995. It is expected that this amount will increase to approximately 3 thousand million in 2002. 

Electroceramics Materials, Properties, Applications. 2nd Edition. Edited by A. J. Moulson and J. M. Herbert. 2003 John Wiley Sons, Ltd ISBN 0 471 49747 9 (hardback) 0 471 49748 7 (paperback)... 

Perovskite-type titanates (e.g. SrTiCL, BaTiOi) constitute an important class of electroceramic materials and are, for example, used in PTC (positive temperature coefficient) resistors, capacitors, varistors or sensors [324-326]. A degradation process that... 

The bulk and grain boundary behaviour of a polycrystalline electroceramic material can be described by a Voigt structure consisting of two RC circuits. This simple Voigt structure is shown in Figure 4.24a. The parameters of this model all have direct physical meanings Rl =Rh, ci = R2 = Rgb, and C2 = Cgb, where b refers to bulk and gb refers to grain boundary. 

Most important electroceramic material sintered BaTiOs... 

Moulson A. J. and Herbert J. M., Electroceramics Materials, Properties, and Applications. 2nd ed. (Greater New York City Area, USA John Wiley Sons, 2003). 

Setter, N., Waser, R. Electroceramic materials. Acta Mater. 48,151-178 (2000)... 

Heywang W, Lubitz K, Wersing W (eds) (2008) Springer series in materials science 114, Piezoelectricity - evolution and future of a technology. Springer, Berlin, Heidelberg Moulson AJ, Herbert JM (1990) Electroceramics - Material, properties, applications. Chapman Hall, London, UK... 

Moulson AJ, Herbert JM (2003) Electroceramics - Material, Properties, Applications. Wiley, New York, NY... 

Tit. A small imperfection on glassware. Titanate Ceramics. A group of electroceramic materials generally based on the... 

Wafers. Small sheets of electroceramic material (e.g. BaTiO, 0.025-0.25 mm thick for use in electronic equipment, particularly in miniature capacitors, transistors, resistors and other circuit components. 

The complexity of electroceramic materials cannot be covered exhaustively in the present short chapter instead, only basic information on the various dielectric effects wUl be provided. Examples of ceramic and single crystal materials, and their properties and appUcations wUl be given that are intended to stand pars pro toto for the completeness of information. 

Both, ferroic and nonferroic electroceramic materials have important industrial applications, some of which are outlined in Table 8.2 (further details are provided below). The very broad field of ferrimagnetic ceramics (ferrites) will not be described in this treatise for this information, the reader is referred to more specialized literature (Krupicka, 1973 Goldman, 2006). 

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