Thermal Shock Testing of High-Temperature Metallic Materials

2009 ◽  
pp. 164-164-19
Author(s):  
Thomas A. Hunter
Keyword(s):  
High Temperature ◽  
Thermal Shock ◽  
Metallic Materials ◽  
Shock Testing

Structure Evolution of 7YSZ Thermal Barrier Coating During Thermal Shock Testing

2015 ◽  
Vol 30 (12) ◽  
pp. 1261
Author(s):  
ZHANG Xiao-Feng ◽  
ZHOU Ke-Song ◽  
ZHANG Ji-Fu ◽  
ZHANG Yong ◽  
LIU Min ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Barrier Coating ◽  
Structure Evolution ◽  
Thermal Barrier ◽  
Shock Testing ◽  
Barrier Coating

281. An evaluation of the critical pv-values of carbons for a mechanical seal by thermal shock testing

Carbon ◽  
1982 ◽  
Vol 20 (2) ◽  
pp. 156
Author(s):  
S. Sato ◽  
K. Kawamata ◽  
J. Aizawa ◽  
M. Ishii
Keyword(s):  
Thermal Shock ◽  
Mechanical Seal ◽  
Shock Testing

Board-Level Reliability of Pb-Free Surface Mounted Assemblies during Thermal Shock Testing

2006 ◽  
Vol 15-17 ◽  
pp. 633-638 ◽  
Author(s):  
Jong Woong Kim ◽  
Hyun Suk Chun ◽  
Sang Su Ha ◽  
Jong Hyuck Chae ◽  
Jin Ho Joo ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Solder Joints ◽  
Lead Frame ◽  
Shear Forces ◽  
Microstructural Investigation ◽  
Shock Testing ◽  
Ceramic Capacitor ◽  
Board Level ◽  
Board Level Reliability ◽  
Thermal Shocks

Board-level reliability of conventional Sn-37Pb and Pb-free Sn-3.0Ag-0.5Cu solder joints was evaluated using thermal shock testing. In the microstructural investigation of the solder joints, the formation of Cu6Sn5 intermetallic compound (IMC) layer was observed between both solders and Cu lead frame, but any crack or newly introduced defect cannot be found even after 2000 cycles of thermal shocks. Shear test of the multi layer ceramic capacitor (MLCC) joints were also conducted to investigate the effect of microstructural variations on the bonding strength of the solder joints. Shear forces of the both solder joints decreased with increasing thermal shock cycles. The reason to the decrease in shear force was discussed with fracture surfaces of the shear tested solder joints.

Scaling Behavior of Superheater Tube Alloys in ASME High Temperature Steam Research Tests at 1100–1500 F

1962 ◽  
Vol 84 (3) ◽  
pp. 223-257 ◽  
Author(s):  
F. Eberle ◽  
C. H. Anderson
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Scaling Behavior ◽  
Effect Of Temperature ◽  
Relative Resistance ◽  
Superheater Tube ◽  
Shock Resistance ◽  
High Temperature Steam

The scales formed on seven ferritic and ten austenitic types of commercial tubing presently in use and of potential future use for superheater service were examined after 6, 12, and 18 months’ exposure to air and to flowing steam of 2000 psi at temperatures of 1100, 1200, 1350, and 1500 F. The effect of temperature and time of exposure on the adherence, thermal-shock resistance, thickness, structure, and chemical composition of the scales was investigated and the relative resistance to scaling of the various alloys evaluated.

scholarly journals Damage of metallic materials during high-temperature creep

2019 ◽  
Vol 20 (3) ◽  
pp. 1-4
Author(s):  
A.R. Arutyunyan ◽  
◽  
R.A. Arutyunyan ◽  
R.R. Saitova ◽  
◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Creep ◽  
Metallic Materials ◽  
Temperature Creep

scholarly journals LC/8YSZ TBCs Thermal Cycling Life and Failure Mechanism under Extreme Temperature Gradients

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1051
Author(s):  
Kun Liu ◽  
Xi Chen ◽  
Kangping Du ◽  
Yu Wang ◽  
Jinguang Du ◽  
...  
Keyword(s):  
High Temperature ◽  
Surface Temperature ◽  
Thermal Cycling ◽  
Thermal Shock ◽  
Failure Mechanism ◽  
Extreme Temperature ◽  
Temperature Gradients ◽  
Accelerated Life Test ◽  
Ceramic Layer ◽  
Cycling Life

The purpose of this paper is to study the thermal shock resistance and failure mechanism of La2Ce2O7/8YSZ double-ceramic-layer thermal barrier coatings (LC/8YSZ DCL TBCs) under extreme temperature gradients. At high surface temperatures, thermal shock and infrared temperature measuring modules were used to determine the thermal cycling life and insulation temperature of LC/8YSZ DCL TBCs under extreme temperature gradients by an oxygen–acetylene gas flame testing machine. A viscoelastic model was used to obtain the stress and strain law of solid phase sintering of a coating system using the finite element method. Results and Conclusion: (1) Thermal cycling life was affected by the surface temperature of LC/8YSZ DCL TBCs and decreased sharply with the increase of surface temperature. (2) The LC ceramic surface of the failure coating was sintered, and the higher the temperature, the faster the sintering process. (3) Accelerated life test results showed that high temperature thermal cycling life is not only related to thermal fatigue of ceramic layer, but is also related to the sintering degree of the coating. (4) Although the high temperature thermal stress had great influence on the coating, great sintering stress was produced with sintering of the LC ceramic layer, which is the main cause of LC/8YSZ DCL TBC failure. The above results indicate that for new TBC ceramic materials, especially those for engines above class F, their sinterability should be fully considered. Sintering affects the thermal shock properties at high temperature. Our research results can provide reference for material selection and high temperature performance research.

Sign in / Sign up

Export Citation Format

Share Document