Templated grain growth

Ferroelectric ceramics (such as barium titanate, lead zircanate titanate) Sensors and actuators, electronic memory, optical applications Tape casting, sputtering, pressing, templated grain growth Improved dielectric and piezoelectric properties... 

Figure 7.31 Templated grain growth process (a) templates (black platelets) are randomly oriented in powder (b) during consolidation, templates achieve a preferred orientation (c) larger templates grow at the expense of smaller particles during sintering (d) after sintering, the majority of the final part can be composed of grains with the preferred orientation or texture.

Kwon, S. Sabolsky, E. M. Control of ceramic microstmeture by templated grain growth. 

K4Nb60i7 was converted into the pseudo-cubic (001) plane of (Nao.sKo.slNbOs. The polycrystaUine Nao.sKo.sNbOs particles exhibited a plate-like shape with a high aspect ratio, and were suitable for preparing textured ceramics by the template grain growth process. 

I.E.Gonenli and GL.Messing, Texturing of Mullite by Templated Grain Growth with Aluminum Borate Whiskers, / Ear. Cer. Soc.. 21, 2495-2501 (2001). 

C. Duran, and Y.K.Tiir, Phase Formation and Texture Development in Mullite/Zirconia Composites Fabricated by Templated Grain Growth, J. Mater. Sci, 41, 3303-13 (2006). 

FIGURE 15.9 Templating grain growth. The seed is the elongated grain in the center. 

Suvaci, E., Oh, K.-S., and Messing, G.L. (2001) Kinetics of template growth in alumina during the process of templated grain growth (TGG), Acta Mater. 49, 2075. 

Templated growth of materials like BaTiOs presents an attractive route to producing a textured ceramic. Templated grain growth of alumina was discussed above. The principle involved here is the use of a seed to initiate exaggerated grain growth. 

Hong SH, Messing GL (1999) Development of textured mullite by templated grain growth. J Am Ceram Soc 82 867-872... 

Ma S, Fuh JYH, Zhang YF, Lu L (2010) Synthesis of anisotropic lead titanate powders for templated grain growth of textured piezoelectric ceramics. Surf Rev Lett 17 159-164... 

Messing GL, Trolier-McKinstry S, Sabolsky EM, Duran C, Kwon S, Brahmaroutu B et al (2004) Templated grain growth of textured piezoelectric ceramics. Crit Rev Solid State Mater Sci 29 45-96... 

Gonenli IE, Messing GL (2001) Texturing of mullite by templated grain growth with aluminum borate whiskers. J Eur Ceram Soc 21 2495-2501... 

Seabaugh MM, Kerscht IH, Messing GL (1997) Texture development by templated grain growth in liquid-phase-sintered alpha-alumina. J Am Ceram Soc 80 1181-1188... 

Snel MD, van Hoolst J, de Wilde AM, Mertens M, Snijkers F, Luyten J (2009) Influence of tape east parameters on texture formation in alumina by templated grain growth. J Eur Ceram Soc 29 2757-2763... 

Kimura T, Yi Y, Sakurai F (2010) Mechanisms of texture development in lead-free piezoelectric ceramics with perovskite stmcture made by the templated grain growth process. Materials 3 4965-4978... 

Riehter T, Schuh C, Moos R, Suvaci E (2008) Single erystal growth and texturing of lead-based piezoelectric ceramics via templated grain growth process. Funet Mater Lett 1 127-132... 

Rehrig, P. W., Messing, G. L. and Trolier-McKinstry, S., Templated grain growth of barium titanate single crystals, J. Am. Ceram. Soc., 83, 2654-60, 2000. 

A templated grain growth method was applied for the fabrication of textured ceramics with single crystal-hke properties. 

Figure 18.20 Schematic of the microstructure evolution with heating for the templated grain growth process. From Ref [49].

Seabaugh, M.M., Cheney, G.L., Hasinska, K., Azad, A.M., Sabolsky, E.M., Swartz, S.L., and Dawson, W.J. (2004) Development of a templated grain growth system for texturing piezoelectric ceramics. /. IntAl. Mater Syst. Struct.,... 

Tani, T. and Kimura, T. (2006) Reactive-templated grain growth processing for lead free piezoelectric ceramics. Adv. Appl. Ceram., 105 (1), 55-63. 

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