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Electron Microscopical Investigation Of Interdiffusion And Phase Formation At Gd2o3 Ceo2 And Sm2o3 Ceo2 Interfaces

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Electron Microscopical Investigation Of Interdiffusion And Phase Formation At Gd2o3 Ceo2 And Sm2o3 Ceo2 Interfaces

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Author : Christian Rockenhäuser
language : en
Publisher: Springer
Release Date : 2015-03-17

Electron Microscopical Investigation Of Interdiffusion And Phase Formation At Gd2o3 Ceo2 And Sm2o3 Ceo2 Interfaces written by Christian Rockenhäuser and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-17 with Science categories.

Christian Rockenhäuser adresses phase formation and cation interdiffusion of the GdxCe1-xO2-x/2-and SmxCe1-xO2-x/2-material systems at temperatures ranging from 970 to 1270°C. Diffusion couples with CeO2/Sm2O3 and CeO2/Gd2O3 interfaces were fabricated for the investigations. The resulting reaction phases were investigated utilizing transmission electron microscopy (TEM) and allow conclusions regarding the phase diagrams in the examined temperature range. A miscibility gap can be ruled out for GdxCe1-xO2-x/2 across the whole composition range. Cation interdiffusion coefficients were determined for both material systems by measuring and evaluating concentration profiles at the material interfaces. The activation enthalpies for interdiffusion were calculated using the temperature dependence of the interdiffusion coefficients. The study for the first time compiles comprehensively the previous results regarding the phase diagrams of the two material systems since 1923.

Electron Microscopical Investigation Of Interdiffusion And Phase Formation At Gd2o3 Ceo2 And Sm2o3 Ceo2 Interfaces

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Author : Christian Rockenhäuser
language : en
Publisher:
Release Date : 2015

Electron Microscopical Investigation Of Interdiffusion And Phase Formation At Gd2o3 Ceo2 And Sm2o3 Ceo2 Interfaces written by Christian Rockenhäuser and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.

Atomic Layer Deposition For Semiconductors

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Author : Cheol Seong Hwang
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-10-18

Atomic Layer Deposition For Semiconductors written by Cheol Seong Hwang and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-18 with Science categories.

Offering thorough coverage of atomic layer deposition (ALD), this book moves from basic chemistry of ALD and modeling of processes to examine ALD in memory, logic devices and machines. Reviews history, operating principles and ALD processes for each device.

Perovskite Oxide For Solid Oxide Fuel Cells

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Author : Tatsumi Ishihara
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-06-12

Perovskite Oxide For Solid Oxide Fuel Cells written by Tatsumi Ishihara and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-06-12 with Technology & Engineering categories.

Fuel cell technology is quite promising for conversion of chemical energy of hydrocarbon fuels into electricity without forming air pollutants. There are several types of fuel cells: polymer electrolyte fuel cell (PEFC), phosphoric acid fuel cell (PAFC), molten carbonate fuel cell (MCFC), solid oxide fuel cell (SOFC), and alkaline fuel cell (AFC). Among these, SOFCs are the most efficient and have various advantages such as flexibility in fuel, high reliability, simple balance of plant (BOP), and a long history. Therefore, SOFC technology is attracting much attention as a power plant and is now close to marketing as a combined heat and power generation system. From the beginning of SOFC development, many perovskite oxides have been used for SOFC components; for example, LaMnO -based oxide for the cathode and 3 LaCrO for the interconnect are the most well known materials for SOFCs. The 3 current SOFCs operate at temperatures higher than 1073 K. However, lowering the operating temperature of SOFCs is an important goal for further SOFC development. Reliability, durability, and stability of the SOFCs could be greatly improved by decreasing their operating temperature. In addition, a lower operating temperature is also beneficial for shortening the startup time and decreasing energy loss from heat radiation. For this purpose, faster oxide ion conductors are required to replace the conventional Y O -stabilized ZrO 2 3 2 electrolyte. A new class of electrolytes such as LaGaO is considered to be 3 highly useful for intermediate-temperature SOFCs.

Introduction To Sol Gel Processing

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Author : Alain C. Pierre
language : en
Publisher: Springer Nature
Release Date : 2020-03-10

Introduction To Sol Gel Processing written by Alain C. Pierre and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-10 with Technology & Engineering categories.

This book presents a broad, general introduction to the processing of Sol-Gel technologies. This updated volume serves as a general handbook for researchers and students entering the field. This new edition provides updates in fields that have undergone rapid developments, such as Ceramics, Catalysis, Chromatropgraphy, biomaterials, glass science, and optics. It provides a simple, compact resource that can also be used in graduate-level materials science courses.

Physics Briefs

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Author :
language : en
Publisher:
Release Date : 1992

Physics Briefs written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Physics categories.

Ceramic And Glass Materials

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Author : James F. Shackelford
language : en
Publisher: Springer
Release Date : 2010-11-05

Ceramic And Glass Materials written by James F. Shackelford and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-11-05 with Technology & Engineering categories.

This is a concise, up-to-date book that covers a wide range of important ceramic materials used in modern technology. Chapters provide essential information on the nature of these key ceramic raw materials including their structure, properties, processing methods and applications in engineering and technology. Treatment is provided on materials such as alumina, aluminates, Andalusite, kyanite, and sillimanite. The chapter authors are leading experts in the field of ceramic materials. An ideal text for graduate students and practising engineers in ceramic engineering, metallurgy, and materials science and engineering.

Solid Oxide Fuel Cell Technology

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Author : K Huang
language : en
Publisher: Elsevier
Release Date : 2009-07-30

Solid Oxide Fuel Cell Technology written by K Huang and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-07-30 with Technology & Engineering categories.

High temperature solid oxide fuel cell (SOFC) technology is a promising power generation option that features high electrical efficiency and low emissions of environmentally polluting gases such as CO2, NOox and SOx. It is ideal for distributed stationary power generation applications where both high-efficiency electricity and high-quality heat are in strong demand. For the past few decades, SOFC technology has attracted intense worldwide R&D effort and, along with polymer electrolyte membrane fuel cell (PEMFC) technology, has undergone extensive commercialization development.This book presents a systematic and in-depth narrative of the technology from the perspective of fundamentals, providing comprehensive theoretical analysis and innovative characterization techniques for SOFC technology. The book initially deals with the basics and development of SOFC technology from cell materials to fundamental thermodynamics, electronic properties of solids and charged particle transport. This coverage is extended with a thorough analysis of such operational features as current flow and energy balance, and on to voltage losses and electrical efficiency. Furthermore, the book also covers the important issues of fuel cell stability and durability with chapters on performance characterization, fuel processing, and electrode poisoning. Finally, the book provides a comprehensive review for SOFC materials and fabrication techniques. A series of useful scientific appendices rounds off the book.Solid oxide fuel cell technology is a standard reference for all those researching this important field as well as those working in the power industry. - Provides a comprehensive review of solid oxide fuel cells from history and design to chemistry and materials development - Presents analysis of operational features including current flow, energy balance, voltage losses and electrical efficiency - Explores fuel cell stability and durability with specific chapters examining performance characterization, fuel processing and electrode poisoning

Nonstoichiometric Oxides

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Author : O.T. Soerensen
language : en
Publisher: Elsevier
Release Date : 2012-12-02

Nonstoichiometric Oxides written by O.T. Soerensen and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.

Nonstoichiometric Oxides discusses the thermodynamic and structural studies of nonstoichiometric oxides. This eight-chapter text also covers the defect-defect interactions in these compounds. The introductory chapters describe the thermodynamic properties of nonstoichiometric oxides in terms of defect complexes using the classical thermodynamic principles and from a statistical thermodynamics point of view. These chapters also include statistical thermodynamic models that indicate the ordered nonstoichiometric phase range in these oxides. The subsequent chapters examine the transport properties, such as diffusion and electrical conductivity. Diffusion theories and experimental diffusion coefficients for several systems, as well as the electrical properties of the highly defective ionic and mixed oxide conductor, are specifically tackled in these chapters. The concluding chapters present the pertinent results obtained in nonstoichiometric oxide structural studies using high-resolution electron microscopy and X-ray and neutron diffraction. Inorganic chemists and inorganic chemistry teachers and students will greatly appreciate this book.

Sintering Of Ceramics

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Author : Mohamed N. Rahaman
language : en
Publisher: CRC Press
Release Date : 2007-07-06

Sintering Of Ceramics written by Mohamed N. Rahaman and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-07-06 with Technology & Engineering categories.

Sintering of Ceramics provides the only comprehensive treatment of the theories and principles of sintering and their application to the production of advanced ceramics with the required target microstructure. Stemming from the author's bestselling text, Ceramic Processing and Sintering, this book includes additional material selected

Electron Microscopical Investigation Of Interdiffusion And Phase Formation At Gd2o3 Ceo2 And Sm2o3 Ceo2 Interfaces

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