Thermal Stress Relaxation in Functionally Graded Material during Cooling Process after High Temperature Synthesis

2000 ◽  
Vol 2000.3 (0) ◽  
pp. 119-120
Author(s):  
Naoya WAGA ◽  
Yoshihiro SUGANO ◽  
Fumihito NISHIMURA
Keyword(s):  
Thermal Stress ◽  
High Temperature ◽  
Stress Relaxation ◽  
Functionally Graded Material ◽  
Functionally Graded ◽  
Cooling Process ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Graded Material ◽  
Thermal Stress Relaxation

HIGH-TEMPERATURE FUNCTIONALLY GRADED MATERIAL FABRICATED VIA REACTIVE ALLOY INFILTRATION

2018 ◽  
pp. 45-53 ◽  
Author(s):  
V.A. Prokofiev ◽  
◽  
O.Yu. Sorokin ◽  
M.L. Vaganova ◽  
Yu.Е. Lebedeva ◽  
...  
Keyword(s):  
High Temperature ◽  
Functionally Graded Material ◽  
Functionally Graded ◽  
Graded Material

Self-propagating high-temperature synthesis of functionally graded materials as thermal protection systems for high-temperature applications

2003 ◽  
Vol 18 (2) ◽  
pp. 448-455 ◽  
Author(s):  
N. Bertolino ◽  
M. Monagheddu ◽  
A. Tacca ◽  
P. Giuliani ◽  
C. Zanotti ◽  
...  
Keyword(s):  
High Temperature ◽  
Functionally Graded Materials ◽  
Thermal Protection ◽  
Functionally Graded ◽  
Temperature Synthesis ◽  
Thermal Tests ◽  
Graded Materials ◽  
Thermal Barriers ◽  
High Temperature Synthesis ◽  
Spatial Composition

Self-propagating high-temperature synthesis was used to prepare boride-based functionally graded materials (FGMs) as thermal barriers for space re-entry vehicles. FGMs are characterized by inhomogeneous spatial composition, resulting in different spatial characteristics. In this work, the FGMs were composed of a ceramic [i.e., MB2 (M = Ti, Zr, Hf)] and a metallic (i.e., NiAl) side, joined together by composite layers of graded stoichiometries of the two components. Thus, in the same material, the boride end gives thermal insulation, while the intermetallic end offers an easy junction to the structure of the space aircraft. The prepared FGMs showed good adhesion between the layers and global compactness after preparation and thermal tests. The microhardness along the samples was measured, and their insulating capabilities were evaluated.

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