A cumulative oxide growth model considering the deterioration history of thermal barrier coatings

2021 ◽  
Vol 182 ◽  
pp. 109273
Author(s):  
Keekeun Kim ◽  
Damhyun Kim ◽  
Kibum Park ◽  
Junghan Yun ◽  
Namgyu Jun ◽  
...  
Keyword(s):  
Thermal Barrier Coatings ◽  
Growth Model ◽  
Thermal Barrier ◽  
Oxide Growth ◽  
Barrier Coatings ◽  
History Of

A review of thermal barrier coatings for improvement in thermal efficiency of both gasoline and diesel reciprocating engines

2020 ◽  
pp. 146808742097801
Author(s):  
Noboru Uchida
Keyword(s):  
Thermal Barrier Coatings ◽  
Thermal Efficiency ◽  
Internal Combustion Engines ◽  
Exhaust Emissions ◽  
Thermal Barrier ◽  
Cylinder Wall ◽  
Barrier Coatings ◽  
Barrier Coating ◽  
Reciprocating Engines ◽  
History Of

Cylinder wall heat insulation using thermal barrier coatings is both an old and new thermal efficiency improvement technology for internal combustion engines. This review first outlines the history of thermal barrier coating (TBC) technologies applied to reciprocating engines from the 1970s up to the present day, by referring to several distinctive reference papers. These research efforts, however, present a number of conflicting conclusions. In order to understand why the results did not always coincide, certain key features of TBC’s studied in the reference papers were then investigated in more detail, such as thermal properties, porosity, surface roughness, and translucence/emissivity. The studies of not only the effect of TBC’s on diesel exhaust emissions, but TBC effects on gasoline and HCCI performance and exhaust emissions, are also reviewed for the investigation of manifold TBC characteristics. Finally, state of the art techniques and constraints were reviewed for experimental and numerical analysis of the heat transfer mechanism, which should be applied to TBC research.

Modelling and analysis of the oxide growth coupling behaviour of thermal barrier coatings

2019 ◽  
Vol 54 (14) ◽  
pp. 10270-10283 ◽  
Author(s):  
Xiaokang Wang ◽  
Xueling Fan ◽  
Yongle Sun ◽  
Rong Xu ◽  
Peng Jiang
Keyword(s):  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Oxide Growth ◽  
Barrier Coatings

Oxide growth and damage evolution in thermal barrier coatings

2011 ◽  
Vol 78 (10) ◽  
pp. 2139-2152 ◽  
Author(s):  
T.S. Hille ◽  
S. Turteltaub ◽  
A.S.J. Suiker
Keyword(s):  
Thermal Barrier Coatings ◽  
Damage Evolution ◽  
Thermal Barrier ◽  
Oxide Growth ◽  
Barrier Coatings

Modelling of catastrophic stress development due to mixed oxide growth in thermal barrier coatings

2019 ◽  
Vol 45 (9) ◽  
pp. 11353-11361 ◽  
Author(s):  
Feng Xie ◽  
Yongle Sun ◽  
Dingjun Li ◽  
Yu Bai ◽  
Weixu Zhang
Keyword(s):  
Thermal Barrier Coatings ◽  
Mixed Oxide ◽  
Thermal Barrier ◽  
Oxide Growth ◽  
Barrier Coatings ◽  
Stress Development

Characterization of thermal barrier coatings formed by electon-beam physical vapor deposition (EB-PVD)

1989 ◽  
Vol 47 ◽  
pp. 426-427
Author(s):  
Ozer Unal
Keyword(s):  
Thermal Barrier Coatings ◽  
Physical Vapor Deposition ◽  
Ceramic Coating ◽  
High Vacuum ◽  
Ceramic Coatings ◽  
High Energy ◽  
Thermal Barrier ◽  
Protective Oxide ◽  
Barrier Coatings ◽  
Energy Beam

Interest in ceramics as thermal barrier coatings for hot components of turbine engines has increased rapidly over the last decade. The primary reason for this is the significant reduction in heat load and increased chemical inertness against corrosive species with the ceramic coating materials. Among other candidates, partially-stabilized zirconia is the focus of attention mainly because ot its low thermal conductivity and high thermal expansion coefficient.The coatings were made by Garrett Turbine Engine Company. Ni-base super-alloy was used as the substrate and later a bond-coating with high Al activity was formed over it. The ceramic coatings, with a thickness of about 50 μm, were formed by EB-PVD in a high-vacuum chamber by heating the target material (ZrO2-20 w/0 Y2O3) above its evaporation temperaturef >3500 °C) with a high-energy beam and condensing the resulting vapor onto a rotating heated substrate. A heat treatment in an oxidizing environment was performed later on to form a protective oxide layer to improve the adhesion between the ceramic coating and substrate. Bulk samples were studied by utilizing a Scintag diffractometer and a JEOL JXA-840 SEM; examinations of cross-sectional thin-films of the interface region were performed in a Philips CM 30 TEM operating at 300 kV and for chemical analysis a KEVEX X-ray spectrometer (EDS) was used.

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