Fracture Strength and Thermal Shock Resistance of Thick And Thin-Wall Magnesium-Aluminum-Silicate Ceramic Heat Regenerators

1978 ◽  
Vol 100 (1) ◽  
pp. 136-139
Author(s):  
J. J. Cleveland ◽  
C. W. Fritsch ◽  
R. N. Kleiner
Keyword(s):  
Heat Exchanger ◽  
Thermal Shock ◽  
Fracture Strength ◽  
Thermal Shock Resistance ◽  
Thick Wall ◽  
Aluminum Silicate ◽  
Thin Wall ◽  
Magnesium Aluminum Silicate ◽  
Shock Resistance ◽  
Silicate Ceramic

Thin-wall regenerator cores offer the potential for higher effectiveness than comparable thick-wall cores. The fracture strength of magnesium-aluminum-silicate (MAS) ceramic heat-exchanger cores with wall thickness of 0.083 mm (0.003 in.) and 0.160 mm (0.006 in.) are compared. Thermal shock resistance calculations for these cores are also presented.

scholarly journals Development of a Low Thermal Expansion Magnesium-Aluminum-Silicate Ceramic for Gas Turbine Heat Exchanger Applications

1975 ◽  
Author(s):  
Sergej-Tomislav Buljan ◽  
R. N. Kleiner
Keyword(s):  
Thermal Expansion ◽  
Heat Exchanger ◽  
Gas Turbine ◽  
Ceramic Materials ◽  
Aluminum Silicate ◽  
Factors Influencing ◽  
Low Thermal Expansion ◽  
Magnesium Aluminum Silicate ◽  
Silicate Ceramic

A review of the factors influencing the thermal expansion of ceramic materials is presented. Studies have shown that thermal expansions lower than the theoretical value predicted for cordierite can be obtained. The properties of a low thermal expansion magnesium-aluminum-silicate ceramic developed for gas turbine heat exchanger applications are described.

Thermal Shock Resistance of Standard and Thin Wall Ceramic Catalysts

1999 ◽  
Author(s):  
S. T. Gulati ◽  
M.E. Zak ◽  
L.F. Jones ◽  
J.S. Rieck ◽  
M. Russ ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Thin Wall ◽  
Shock Resistance ◽  
Wall Ceramic

Temperature and Microstructures Dependent Thermal Shock Resistance Models for Ultra-High-Temperature Ceramics Considering Effect of Residual Stress

2013 ◽  
Vol 29 (4) ◽  
pp. 695-702 ◽  
Author(s):  
R. Z. Wang ◽  
S. G. Ai ◽  
W. G. Li ◽  
J. Zheng ◽  
C. Z. Zhang
Keyword(s):  
Residual Stress ◽  
High Temperature ◽  
Thermal Shock ◽  
Fracture Strength ◽  
Thermal Shock Resistance ◽  
Temperature Dependent ◽  
Ultra High Temperature Ceramics ◽  
Micro Cracks ◽  
Shock Resistance ◽  
Ultra High Temperature

ABSTRACTBased on the researches on the temperature and microstructures dependent fracture strength and temperature dependent thermal shock resistance, the new thermal shock resistance models for ultra-high-temperature ceramics were proposed. The effect of density on the fracture strength of material was investigated. A damage term was introduced to reveal the effects of uncertain factors on fracture strength. The roles of residual stress and microstructure sizes at different initial thermal shock temperatures in the thermal shock resistance were studied using the models. The study showed that the models can reveal the relationships among the residual stress, microstructure sizes and the temperature dependent thermal shock resistance well. The better thermal shock resistance is found for ultra-high-temperature ceramics having small SiC grains and relatively large micro-cracks around SiC grains. Large enhancement in thermal shock resistance can be achieved through our studies.

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