Effects of processing conditions on the mechanical properties and deformation behaviors of plasma-sprayed thermal barrier coatings: Evaluation of residual stresses and mechanical properties of thermal barrier coatings on the basis of in situ curvature measurement under a wide range of spray parameters

2013 ◽  
Vol 61 (4) ◽  
pp. 1037-1047 ◽  
Author(s):  
Xiancheng Zhang ◽  
Makoto Watanabe ◽  
Seiji Kuroda
Keyword(s):  
Mechanical Properties ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Spray Parameters ◽  
Barrier Coatings ◽  
Curvature Measurement ◽  
Wide Range ◽  
Deformation Behaviors ◽  
Plasma Sprayed

Mechanical Properties of Thermal Barrier Coatings at Room Temperature

2005 ◽  
Vol 290 ◽  
pp. 336-339 ◽  
Author(s):  
G. Guidoni ◽  
Y. Torres Hernández ◽  
Marc Anglada
Keyword(s):  
Mechanical Properties ◽  
Thermal Barrier Coatings ◽  
Room Temperature ◽  
Inconel 625 ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Bending Tests ◽  
Four Point Bending ◽  
Barrier Coating ◽  
Plasma Sprayed

Four point bending tests have been carried out on a thermal barrier coating (TBC) system, at room temperature. The TBC system consisted of a plasma sprayed Y-TZP top coat with 8 % in weight of Yttria, a bond coat of NiCrAlY and a Ni-based superalloy Inconel 625 as substrate. The TBC coating was deposited on both sides of the prismatic specimens. Efforts have been done in detecting the damage of the coating by means of Maltzbender et al [1] model.

Effect of laser glazing on the thermo-mechanical properties of plasma-sprayed LaTi2Al9O19 thermal barrier coatings

2016 ◽  
Vol 32 (14) ◽  
pp. 1573-1580 ◽  
Author(s):  
S. R. Dhineshkumar ◽  
Muthukannan Duraiselvam ◽  
S. Natarajan ◽  
S. S. Panwar ◽  
Trilochan Jana ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Barrier Coatings ◽  
Thermal Barrier ◽  
Laser Glazing ◽  
Barrier Coatings ◽  
Plasma Sprayed

Microstructural Evolution and Mechanical Properties of Vertical-Cracked Thermal Barrier Coatings in Thermal Exposure

2012 ◽  
Vol 512-515 ◽  
pp. 1040-1044 ◽  
Author(s):  
Zhe Lu ◽  
Sang Won Myoung ◽  
Tae Sik Jang ◽  
Kang Hyeon Lee ◽  
Je Hyun Lee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Thermal Barrier Coatings ◽  
Total Porosity ◽  
Thermal Exposure ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Barrier Coatings ◽  
Plasma Sprayed ◽  
Intrinsic Feature

The effects of intrinsic feature of feedstock in air plasma-sprayed (APS) coatings on the microstructure and mechanical properties of vertical-cracked thermal barrier coatings (TBCs) were investigated in thermal exposure. The microstructure after the thermal exposure for 400 h is densified, while after the thermal exposure for 800 h various defects such as interlamellar cracks and the vertical and horizontal cracks are newly developed, even though the total porosity is decreased. The microstructure of the TBC prepared with 204 C-NS is more porous than that of the TBC with 204NS, showing higher mechanical properties and better thermal stability in the TBC with 204 NS.

scholarly journals Control of the Pore Structure of Plasma-Sprayed Thermal Barrier Coatings through the Addition of Unmelted Porous YSZ Particles

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 360
Author(s):  
Yuanjun Li ◽  
Jibo Huang ◽  
Weize Wang ◽  
Dongdong Ye ◽  
Huanjie Fang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Coating ◽  
Thermal Barrier Coatings ◽  
Composite Structure ◽  
Thermal Barrier ◽  
Second Phase ◽  
Barrier Coatings ◽  
Second Phase Particles ◽  
Plasma Sprayed ◽  
Conventional Coating

In this study, a new pore structure control method for plasma-sprayed thermal barrier coatings (TBCs) through the addition of unmelted, porous yttria-stabilized zirconia (YSZ) particles was investigated. Through a unique way of feeding powder, two powder feeders were used simultaneously at different positions of the plasma flame to deposit a composite structure coating in which a conventional plasma-sprayed coating was used as a matrix and unmelted micro-agglomerated YSZ particles were dispersed in the dense conventional coating matrix as second-phase particles. The effects of the distribution and content of second-phase particles on the microstructure, mechanical properties, and lifetime were explored in a furnace cyclic test (24 h) of the composite coating. The mechanical properties and lifetime of the composite coating depend on the content and morphology of the particles embedded in the coating. The lifetime of the composite structure coatings is significantly higher than that of the conventional coatings. By adjusting the spraying parameters, the lifetime of the composite coating prepared under the optimum process is up to 145 days, which is about three times that of the conventional coating. The results of this study provide guidance for the preparation of high-performance composite structure TBCs.

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