Energy Conservative Production for Thermoelectric Strontium Titanate

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This book proposes the production methods of thermoelectric strontium titanate which enable efficient use of energy resources. Key technology used in whole this book is combustion synthesis and also, spark plasma sintering was applied in Chapters 2 and 3. In Chapter 1, a introduction is given. In Chapters 2 and 3, the effects of operating conditions of spark plasma sintering were investigated. Spark plasma sintering successfully led the improvement of merit of lanthanum-doped strontium titanate since grain growth were effectively suppressed and oxygen defects can be introduced at the same time, which resulted in the low thermal conductivity and good electronic properties. In Chapter 4, new combustion route of strontium titanate was described. Powders of titan, titan dioxide, and strontium dioxide were used as raw materials, and the reaction mechanism were investigated. As a result, the oxidation of titan powders was found to trigger the reaction and the apparent activation energy of the reaction was calculated and the obtained results suggest a new route to produce commercially available highly dense ceramics.

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