Factors Controlling Resistance to Deformation and Mechanical Failure in Polycrystalline (glass-free) Ceramics PDF Download
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Author: J. B. Wachtman (Jr.)
Publisher:
ISBN:
Category : Ceramic materials
Languages : en
Pages : 86
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Book Description
Author: J. B. Wachtman (Jr.)
Publisher:
ISBN:
Category : Ceramic materials
Languages : en
Pages : 86
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Book Description
Author: Battelle Memorial Institute
Publisher:
ISBN:
Category : Ceramic
Languages : en
Pages : 462
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Book Description
This publication presents additional refractory-ceramic property data to supplement those published in the first edition of the Materials Selection Handbook, Is sued in October, 1963, as RTD-TDR-63-4102. The materials covered are nonmetallic inorganic crystalline materials with melting points above 273 deg F (150 deg C), including intermetallic compounds and excluding glass, carbon, and graphite. The data are from literature published in 1961 and 1962. This technical documentary report has been reviewed and is approved.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 144
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Author: United States. Dept. of Commerce. Office of Technical Services
Publisher:
ISBN:
Category :
Languages : en
Pages : 742
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Author: R. Chang
Publisher:
ISBN:
Category : Aluminum oxide
Languages : en
Pages : 50
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Author:
Publisher: ASTM International
ISBN:
Category : Fibrous composites
Languages : en
Pages : 186
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Author: George T. Hahn
Publisher:
ISBN:
Category : Brittleness
Languages : en
Pages : 38
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Author: J. B. Wachtman
Publisher:
ISBN:
Category : Ceramic materials
Languages : en
Pages : 280
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Author:
Publisher:
ISBN:
Category : Industries
Languages : en
Pages : 212
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Key business indicators include: Population, Personal Income, Gross National Product, Corp. Profits before Tax, Manufacturing: new orders, Business Inventories, Retail Sales, Industrial Production Index, Housing Starts: private nonfarm, Civilian Labor Force, Consumer Price Index, Balance of Payments, Merchandise Exports, and General Imports.
Author: Alan Arias
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 88
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Book Description
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.
