Results 261 to 270 of about 37,241 (309)

Thermal shock resistant stopper tubes

Refractories, 1968
We have established the possibility of manufacturing chamotte stopper tubes by the semidry pressing method with enhanced thermal shock resistance, and having reliable properties in operation, by using preliminary paraffinized chamotte in the batch.
G. V. Kukolev, I. I. Nemets, G. B. Dobrovol'skii, M. P. Peresada   +3 more
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Thermal shock resistance of Mg-PSZ

Journal of Materials Science, 1985
The thermal shock resistance (TSR) of Mg-PSZ (a partially stabilized ZrO2) containing either tetragonal t- or monoclinic m-ZrO2 precipitates was studied. The samples containing t-ZrO2 had superior TSR, particularly in having a higher retained strength after thermal fracture had been initiated.
A. H. Heuer, L. H. Schoenlein
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Thermal-shock resistance of magnesial refractories

Refractories, 1981
In order to study the thermally induced loss of strength of flat, rectangular specimens, we have proposed a method of evaluating the thermal-shock resistance of the materials based on a determination of the thermal load corresponding to the half-loss of strength of the specimen. In this case, the capacity of the material to work with specified signs of
K. A. Kazakyavichyus, D. V. Narbutene, K. V. Simonov, E. P. Mezentsev   +3 more
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Thermal Shock Resistance of Ceramic Foams

Journal of the American Ceramic Society, 1999
Thermal shock behavior of a variety of open‐cell ceramic foams was evaluated using infrared heating and forced air cooling. The extent of damage after thermal shock was determined by a nondestructive, dynamic resonance technique. The damage in foams was found to be strongly dependent on cell size and weakly dependent on density. In
Venkata R. Vedula, David J. Green, John R. Hellman   +2 more
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Thermal-Shock-Resistant Materials

1971
Aerospace applications which take advantage of the refractory nature of ceramic materials also impose upon them severe conditions of thermal shock. The severity of this thermal environment exceeds that for which it is possible to prevent crack nucleation; therefore, the design of thermal-shock-resistant materials is based on the concept of preventing ...
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Dynamic Thermal Shock Resistance

1974
When DUHAMEL /1/, in 1835, had laid down the foundations of thermo-elasticity, he had derived already the coupled heat conduction equation as well as the corresponding equations of motion. With respect to thermally induced waves and vibrations, however, he asserted the following: “I1 est donc permis, surtout a cause de la lenteur avec laquelle s’opere ...
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Thermal shock resistance of electrical insulators

British Journal of Applied Physics, 1963
The thermal shock resistance factors R and R' of a solid can be defined in terms of its thermal conductivity k, thermal expansion coefficient of α, elastic modulus E and tensile strength St. The thermal conductivity and expansion coefficient of an insulating crystalline material can be eliminated in favour of the mean atomic weight A, the melting ...
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DEVELOPMENT OF ZIRCONIA RESISTANT TO THERMAL SHOCK*

Journal of the American Ceramic Society, 1947
A bstract The effects on the crystal stabilization and other properties of pure zirconia were determined for additions of CaO, MgO, BeO, ThO 2 , and CeO 2 in binary and ...
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Quantitative Evaluation of Thermal-Shock Resistance

Journal of Fluids Engineering, 1956
Abstract The dependence of thermal-shock resistance on two parameters k and σf/Eα (when k is conductivity, σf the fracture stress, E the elastic modulus, and α the coefficient of thermal expansion) is experimentally demonstrated by the fact that the relative ratings of two materials may change with a change of quench severity. The theory
S. S. Manson, R. W. Smith
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Thermal shock resistance and thermal-mechanical processing of sapphire

Journal of the European Ceramic Society, 2003
Abstract The finite elements method was applied to calculate transient thermal stresses in sapphire with taking into account the crystal's anisotropy, scale factor, temperature function of heat transfer and other properties. The sapphire fracture behaviour as compared to ceramic polycrystalline materials under heat load, differs due to two factors ...
A.G. Lanin, E.L. Muravin, V.P. Popov, V.N. Turchin   +3 more
openaire   +1 more source