Effect of rare-earth oxides on microstructure and thermal shock resistance of Al2O3-SiCw composite ceramics for solar thermal storage

2019 ◽  
Vol 45 (2) ◽  
pp. 2003-2011 ◽  
Author(s):  
Xinbin Lao ◽  
Xiaoyang Xu ◽  
Hao Cheng ◽  
Huang Liu ◽  
Linfeng Liang
Keyword(s):  
Rare Earth ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Thermal Storage ◽  
Rare Earth Oxides ◽  
Solar Thermal ◽  
Composite Ceramics ◽  
Shock Resistance

Preparation of ZrO2 Composite Ceramics with High Thermal Shock Resistance

2012 ◽  
Vol 455-456 ◽  
pp. 650-654 ◽  
Author(s):  
He Yi Ge ◽  
Jian Ye Liu ◽  
Xian Qin Hou ◽  
Dong Zhi Wang
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Sintering Temperature ◽  
Fiber Composite ◽  
Physical And Mechanical Properties ◽  
Composite Ceramics ◽  
Shock Resistance ◽  
Absorption Measurements

The physical and mechanical properties of nanometer ZrO2-ZrO2fiber composite ceramics were studied by introduction of ZrO2fiber. ZrO2composite ceramics at different sintering temperature was investigated by porosity and water absorption measurements, flexual strength and thermal shock resistance analysis. Results showed that ZrO2composite ceramics containing 15 wt% ZrO2fiber with sintering temperature of 1650°C exhibited good mechanical properties and thermal shock resistance. The porosity and the water absorption were 8.84% and 1.62%, respectively. The flexual strength was 975 MPa and the thermal shock times reached 31 times. Scanning electron microscope (SEM) was used to analyze the microstructure of ZrO2composite ceramics.

Thermal shock resistance of Si3N4 and Si3N4–SiC ceramics with rare-earth oxide sintering additives

2014 ◽  
Vol 34 (14) ◽  
pp. 3301-3308 ◽  
Author(s):  
Monika Kašiarová ◽  
Peter Tatarko ◽  
Peter Burik ◽  
Ján Dusza ◽  
Pavol Šajgalík
Keyword(s):  
Rare Earth ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Rare Earth Oxide ◽  
Sintering Additives ◽  
Sic Ceramics ◽  
Shock Resistance

Effect of AlF3 Content on Microstructure and Properties of Mullite/Al2O3 Composite Ceramics

2018 ◽  
Vol 922 ◽  
pp. 62-67
Author(s):  
Ke Zheng Sang ◽  
Fan Wang ◽  
De Jun Zeng ◽  
Hong Wei Li
Keyword(s):  
Fracture Toughness ◽  
Flexural Strength ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Diameter Ratio ◽  
Pressureless Sintering ◽  
Composite Ceramics ◽  
Microstructure And Properties ◽  
Shock Resistance ◽  
Mullite Whiskers

To reinforce the mullite/Al2O3 composite ceramics through formation of mullite whiskers, the composite ceramics were prepared by pressureless sintering using different AlF3 content. The microstructure, porosity, fracture toughness and thermal shock resistance of the composite ceramics were investigated. The results show that the addition of AlF3 can promote the mullite whisker formations, and the whiskers with the size of 3～10μm in diameter and a length-diameter ratio of 10～15 are obtained by sintering at 1600°C with the AlF3 content of 5wt%. Fracture toughness and thermal shock resistance of the composite ceramics are improved by the formation of mullite whisker. The fracture toughness of 4.79MPa•m1/2 can be obtained, and the 95.18% flexural strength remained after thermal shock.

Preparation and thermal shock resistance of corundum-mullite composite ceramics from andalusite

2017 ◽  
Vol 43 (2) ◽  
pp. 1762-1767 ◽  
Author(s):  
Xiaohong Xu ◽  
Jingwen Li ◽  
Jianfeng Wu ◽  
Zhaohui Tang ◽  
Linlin Chen ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Composite Ceramics ◽  
Shock Resistance
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