Thermal Property of Cu/Ti3SiC2 FGM

2016 ◽  
Vol 697 ◽  
pp. 670-674
Author(s):  
Yan Lin Chen ◽  
Jin Li ◽  
Shang Shang Shan ◽  
Wei Gao ◽  
Zong Yu Li ◽  
...  
Keyword(s):  
Thermal Property ◽  
Thermal Shock ◽  
Hot Pressing ◽  
Thermal Shock Resistance ◽  
Oxidation Behavior ◽  
Thermal Stresses ◽  
Gradient Material ◽  
Functionally Gradient Material ◽  
Functionally Gradient ◽  
Shock Resistance

A four-layer functionally gradient material (FGM) of Cu/Ti3SiC2 was fabricated by hot pressing (HP) in vacuum. Oxidation behavior of Cu/Ti3SiC2 FGM was also investigated. The results show that the oxidation dynamics of Cu/Ti3SiC2 FGM at 600~800 °C for 30 h in air followed parabolic rate law. The hardness was increased with increasing content of Ti3SiC2. Thermal shock resistance was well owing to the effect of thermal stresses mitigated with FGM.

Investigation of Microstructure and Thermal Shock Resistance of the B4C/BN Composites Fabricated by Hot-Pressing Process

2012 ◽  
Vol 512-515 ◽  
pp. 748-752 ◽  
Author(s):  
Tao Jiang ◽  
Chen Chao Tian
Keyword(s):  
Mechanical Property ◽  
Thermal Shock ◽  
Hot Pressing ◽  
Thermal Shock Resistance ◽  
High Fracture ◽  
Pressing Process ◽  
Low Elastic Modulus ◽  
Shock Resistance ◽  
Quenching Method ◽  
Better Than

The B4C/BN composites were fabricated by hot-pressing process. The B4C/BN composites included the B4C/BN microcomposites and B4C/BN nanocomposites. The B4C/BN microcomposites were fabricated by hot-pressing process, and the B4C/BN nanocomposites were fabricated by chemical reaction and hot-pressing process. In this research, the phase composition, microstructure, mechanical property and thermal shock resistance of the B4C/BN microcomposites and B4C/BN nanocomposites were investigated. The B4C/BN microcomposites and the B4C/BN nanocomposites exhibited the homogenous and compact microstructure, and the h-BN particles were homogenously distributed in the B4C matrix. The mechanical property of the B4C/BN microcomposites and B4C/BN nanocomposites decreased gradually with the increase of h-BN content, but the B4C/BN nanocomposites exhibited the higher mechanical property than that of the B4C/BN microcomposites. The thermal shock resistances of the B4C monolith and the B4C/BN composites were measured by water-quenching method. The thermal shock resistances of the B4C/BN microcomposites and the B4C/BN nanocomposites were remarkably improved in comparison with the B4C monolith. The thermal shock resistance of the B4C/BN nanocomposites was much better than that of the B4C/BN microcomposites. The thermal shock temperature difference (ΔTc) of the B4C monolith was about 300oC, the ΔTc of the B4C/BN microcomposites was about 500oC and the ΔTc of the B4C/BN nanocomposites was about 600oC. The B4C/BN composites exhibited the high thermal shock resistance due to the high fracture strength and low elastic modulus. The microstructure showed that the weak interface of B4C/BN and cleavage behavior of laminate structured h-BN particles would remarkably improve the thermal shock resistance of the B4C/BN composites.

Thermal stresses analysis of ceramic/metal functionally gradient material cylinder

1999 ◽  
Vol 20 (4) ◽  
pp. 413-417 ◽  
Author(s):  
Lu Yunbing ◽  
Zhang Kaiyin ◽  
Xiao Jinsheng ◽  
Wen Dongsheng
Keyword(s):  
Thermal Stresses ◽  
Gradient Material ◽  
Functionally Gradient Material ◽  
Functionally Gradient
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