منابع مشابه
High-Temperature Proton-Conducting Ceramics Developed
with the perovskite structure and with the trivalent cation (M) substitution at the B-site to introduce oxygen vacancies. The high affinity for hydrogen ions (H) is advantageous for protonic transport, but it increases the reactivity toward water (H2O) and carbon dioxide (CO2), which can lead to premature membrane failure. In addition, there are considerable technological challenges related to ...
متن کاملHigh curie temperature ternary piezoelectric ceramics
A preferred piezoelectric ceramic material is a BiFeO3—PbZrO3—PbTiO3 ternary solid solution wherein proportions of the constituent perovskite metal oxides are selected so that the material exhibits relatively high Curie temperatures above 380° C. and useful piezoelectric properties. Disciplines Ceramic Materials This patent is available at Iowa State University Digital Repository: http://lib.dr...
متن کاملreview of the mechanical and thermal properties of high temperature Diboride ceramics
Ceramic borides, carbides and nitrides with high melting point, relatively good resistance to oxidation and corrosive environments are considered by many researchers in various high temperature industries, which is known from the family of materials as high temperature ceramic (UHTC). To be. All UHTCs have very strong bonds that give them structural stability at high temperatures, and among the...
متن کاملMechanisms of High-Temperature Fatigue in Silicon Carbide Ceramics
produce a composite, which is typically accomplished by incorporating continuous fibers, whiskers, platelets, or second The high-temperature mechanical properties of an in situ phase particles (3). For monolithic ceramics, in situ toughening toughened silicon carbide, with Al, B and C sintering additives can also be effective with microstructures consisting of elongated (ABC-Sic), have been exa...
متن کاملUltra-High Temperature Ceramics for solar receivers: spectral and high-temperature emittance characterization
We report on the preparation, room temperature spectral reflectance and high-temperature thermal emittance characterization of different boride and carbide Ultra-High Temperature Ceramics (UHTCs). The investigated samples are compared with a reference material for solar absorber applications, i.e. silicon carbide. We show that spectral and thermal emittance properties of UHTCs are promising for...
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ژورنال
عنوان ژورنال: Journal of Materials for Energy Systems
سال: 1986
ISSN: 0162-9719
DOI: 10.1007/bf02833345