scholarly journals Influence of microstructural size on the thermal shock behavior of Al2O3-Er3Al5O12 directionally solidified eutectics

2019 ◽  
Vol 160 ◽  
pp. 20-24 ◽  
Author(s):  
Ying Nie ◽  
Patricia B. Oliete ◽  
Rosa I. Merino
Keyword(s):  
Thermal Shock ◽  
Directionally Solidified ◽  
Thermal Shock Behavior ◽  
Directionally Solidified Eutectics

Determination of interface width using EELS fine structure changes

1991 ◽  
Vol 49 ◽  
pp. 730-731
Author(s):  
Vinayak P. Dravid ◽  
M.R. Notis ◽  
C.E. Lyman
Keyword(s):  
Fine Structure ◽  
Materials Science ◽  
Input Parameter ◽  
Core Loss ◽  
Directionally Solidified ◽  
Interface Width ◽  
Structure Changes ◽  
Important Input ◽  
Directionally Solidified Eutectics

The concept of interfacial width is often invoked in many materials science phenomena which relate to the structure and properties of internal interfaces. The numerical value of interface width is an important input parameter in diffusion equations, sintering theories as well as in many electronic devices/processes. Most often, however, this value is guessed rather than determined or even estimated. In this paper we present a method of determining the effective structural and electronic- structural width of interphase interfaces using low- and core loss fine structure effects in EELS spectra.The specimens used in the study were directionally solidified eutectics (DSEs) in the system; NiO-ZrO2(CaO), NiO-Y2O3 and MnO-ZrO2(ss). EELS experiments were carried out using a VG HB-501 FE STEM and a Hitachi HF-2000 FE TEM.

Thermal Shock Behavior of the SiC-SiC Joints Joined with Na2O-B2O3-SiO2 Glass Solder

2012 ◽  
Vol 27 (3) ◽  
pp. 234-238 ◽  
Author(s):  
Zhao-Hua LUO ◽  
Dong-Liang JIANG ◽  
Jing-Xian ZHANG ◽  
Qing-Ling LIN ◽  
Zhong-Ming CHEN ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Behavior

Plasma Sprayed WC-12%Co-Coatings for TBC Applications on Diesel Engine Piston

2019 ◽  
Vol 7 (1) ◽  
pp. 37-54 ◽  
Author(s):  
Debasish Das ◽  
Rajeev Verma ◽  
Vipul Pathak
Keyword(s):  
Diesel Engine ◽  
Thermal Shock ◽  
Structural Changes ◽  
Strain Analysis ◽  
Sem Analysis ◽  
Thermal Barrier ◽  
Cast Aluminum Alloy ◽  
Cast Aluminum ◽  
Thermal Shock Behavior ◽  
Plasma Sprayed

In the present study, plasma sprayed WC-12%Co coatings with 100µm NiCrAlY bond coat on a substrate of A336 cast aluminum alloy have been investigated for a thermal barrier coating (TBC) application. The coatings deposited with varying topcoat thickness up to 500µm were deposited on the piston top surface of an Indian hatchback diesel car to act as a thermal barrier and enhance the thermal efficiency of the engine. Although all the specimens with distinct coating overlays survived 350 thermal cycles, the one with 200µm thickness exhibited the best thermal shock behavior as they exuded the most cycles to surface cracks initiation. Moreover, SEM analysis also suggested 200 µm thick coating to be optimal for thermal shock behavior in diesel engine components. The coating phase analysis by XRD and the lattice strain analysis performed by a Williamson-Hall (W-H) analysis did not reveal any structural changes after the thermal shock experiment.

Thermal Shock Behavior of Isotropic and Anisotropic Porous Silicon Nitride

2003 ◽  
Vol 86 (4) ◽  
pp. 738-40 ◽  
Author(s):  
Jihong She ◽  
Jian-Feng Yang ◽  
Daniel Doni Jayaseelan ◽  
Naoki Kondo ◽  
Tatsuki Ohji ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Porous Silicon ◽  
Thermal Shock ◽  
Thermal Shock Behavior

Thermal shock behavior of as-sintered and pre-oxidation Zr2Al4C5–20SiC composites

2010 ◽  
Vol 31 (4) ◽  
pp. 2167-2170 ◽  
Author(s):  
Guiqing Chen ◽  
Rubing Zhang ◽  
Hao Zou
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Behavior

Evaluations of cooling rate and initial temperature on thermal shock behavior of ZrB2-SiC ceramic

2018 ◽  
Vol 741 ◽  
pp. 509-513 ◽  
Author(s):  
Anzhe Wang ◽  
Ping Hu ◽  
Cheng Fang ◽  
Dongyang Zhang ◽  
Xinghong Zhang
Keyword(s):  
Thermal Shock ◽  
Cooling Rate ◽  
Initial Temperature ◽  
Sic Ceramic ◽  
Thermal Shock Behavior
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