Download or read book Thermodynamic Properties of Some Metal Oxide zirconia Systems written by Nathan S. Jacobson and published by . This book was released on 1989 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal oxide-zirconia systems are a potential class of materials for use as structural materials at temperatures above 1900 K. These materials must have no destructive phase changes and low vapor pressures. Both alkaline earth oxide (MgO, CaO, SrO, and BaO)-zirconia and some rare earth oxide (Y2O3, Sc2O3, La2O3, CeO2, Sm2O3, Gd2O3, Yb2O3, Dy2O3, Ho2O3, and Er2O3)-zirconia system are examined. For each system, the phase diagram is discussed and the vapor pressure for each vapor specie is calculated via a free energy minimization procedure. The available thermodynamic literature on each system is also surveyed. Some of the systems look promising for high temperature structural materials.
Download or read book Thermodynamic Properties of Some Metal Oxide Zirconia Systems written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-06 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal oxide-zirconia systems are a potential class of materials for use as structural materials at temperatures above 1900 K. These materials must have no destructive phase changes and low vapor pressures. Both alkaline earth oxide (MgO, CaO, SrO, and BaO)-zirconia and some rare earth oxide (Y2O3, Sc2O3, La2O3, CeO2, Sm2O3, Gd2O3, Yb2O3, Dy2O3, Ho2O3, and Er2O3)-zirconia system are examined. For each system, the phase diagram is discussed and the vapor pressure for each vapor species is calculated via a free energy minimization procedure. The available thermodynamic literature on each system is also surveyed. Some of the systems look promising for high temperature structural materials. Jacobson, Nathan S. Glenn Research Center...
Download or read book 28th International Conference on Advanced Ceramics and Composites B written by Edgar Lara-Curzio and published by John Wiley & Sons. This book was released on 2009-09-28 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of Papers Presented at the 28th International Conference and Exposition on Advanced Ceramics and Composites held in conjunction with the 8th International Symposium on Ceramics in Energy Storage and Power Conversion Systems.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Thermal Shock Resistance of Zirconia with Metal Additions written by Alan Arias and published by . This book was released on 1964 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Zirconium oxide or Zirconia has a melting point of about 27000, is resistant to chemical attack by acids and bases, is very stable at high temperatures in oxidizing atmospheres, and is inert when in contact with most metals at high temperatures. In addition, zirconia is relatively inexpensive and abundant. These characteristics of zirconia would make it a very satisfactory material for many high-temperature applications, were it not for the fact that pure zirconia undergoes an allotropic transformation from tetragonal to monoclinic on cooling through a temperature range in the neighborhood of 900 C. This transformation takes place with a volume increase of about 3 percent. During the reverse transformation near 11000 C on heating, zirconia shrinks by about the same amount. The large anisotropic volume changes associated with the transformation cause bodies made from pure zirconia to disintegrate during their manufacture or when in use. In practice, this difficulty is circumvented by adding small amounts of certain Oxides, such as calcia, magnesia, yttria, etc., to zirconia. Depending on the kind and amount of oxide added to the zirconia, the high-temperature crystal structure of the combination is totally or partially retained on cooling, and the allotropic transformation is also totally or partially suppressed. This so-called stabilized zirconia performs satisfactorily in many high-temperature applications, but the addition of stabilizing oxides also introduces some undesirable features, such as an increase in the thermal-expansion coefficient, a lowering of the melting point, and, for some types of stabilized zirconia, a tendency to disintegrate on prolonged thermal cycling. A zirconia-base material combining the high-temperature properties of pure zirconia without the disadvantages associated with the use of stabilizers would be highly desirable.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Thermodynamics of Zirconium written by and published by Elsevier. This book was released on 2005-12-06 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is part of the series on "Chemical Thermodynamics", published under the aegis of the OECD Nuclear Energy Agency. It contains a critical review of the literature on thermodynamic data for inorganic compounds of zirconium. A review team, composed of five internationally recognized experts, has critically reviewed all the scientific literature containing chemical thermodynamic information for the above mentioned systems. The results of this critical review carried out following the Guidelines of the OECD NEA Thermochemical Database Project have been documented in the present volume, which contains tables of selected values for formation and reaction thermodynamical properties and an extensive bibliography. * Critical review of all literature on chemical thermodynamics for compounds and complexes of Zr.* Tables of recommended Selected Values for thermochemical properties* Documented review procedure* Exhaustive bibliography* Intended to meet requirements of radioactive waste management community* Valuable reference source for the physical, analytical and environmental chemist.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High temperature Durability Considerations for HSCT Combustor written by Nathan S. Jacobson and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Paper written by and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Paper written by United States. National Aeronautics and Space Administration and published by . This book was released on 1991 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress in Thermal Barrier Coatings written by ACerS (American Ceramics Society, The) and published by John Wiley & Sons. This book was released on 2009-06-15 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition of the Progress in Ceramic Technology series compiles articles published on thermal barrier coatings (TBCs) by The American Ceramic Society (ACerS). It collects in one resource the current research papers on materials-related aspects of thermal barrier coatings and associated technologies. Logically organized and carefully selected, the papers in this edition divide into six categories: Applications Material Improvements and Novel Compositions Developments in Processing Mechanical Properties Thermal Properties Citations follow each title in the table of contents, making this a key resource for professionals and academia.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1990 with total page 1312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1990 with total page 1652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metallurgical and Ceramic Protective Coatings written by K.H. Stern and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface engineering is an increasingly important field and consequently those involved need to be aware of the vast range of technologies available to modify surfaces. This text provides an up-to-date, authoritative exposition of the major condensed phase methods used for producing metallurgical and ceramic coatings. Each method is discussed thoroughly by an expert in that field. In each chapter the principle of the method, its range of applications and technical aspects involved are described. The book not only informs the reader about established technologies familiar only to specialists, but also details activity on the frontier of coating technology providing an insight into those potential technologies not yet fully developed but which should emerge in the near future.
Download or read book High Temperature Oxides written by Allen M. Alper and published by Elsevier. This book was released on 2013-10-22 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Refractory Materials: A Series of Monographs Volume 5 is a collection of works from different scientists who have made important discoveries in fields related to chemistry. The text covers topics such as thoria and yttria, and the refractory oxides of the lanthanide and actinide elements; single-crystal titanates and zirconates; some binary systems of zirconium dioxide; and zircon and zirconates. Also covered are topics such as halfnium oxide – its occurrence, purification, and physical and thermodynamic properties; and the structure and physical properties of Nb2O5 and Ta2O5. The book is recommended for chemists and materials scientists who would like to know more about the studies of other experts in the field and their applications.
Download or read book Mechanical and Thermal Properties of Ceramics written by J. B. Wachtman and published by . This book was released on 1969 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
