Experiments and inelastic finite element analyses of plasma sprayed graded coatings under cyclic thermal shock

Design, Preparation, and Characterization of Graded YSZ/La2Zr2O7 Thermal Barrier Coatings

“…It is known that fatigue crack initiation is a surface phenomenon attributed to the residual stress level on the surface 28 . During the thermal shock test, it was generally found that the cracks initiated from the surface and interfaces due to the high in‐plane stress and propagated perpendicularly along the thickness direction, which resulted in the debonding of the coating 29 . In a graded coating, these cracks originate from the most brittle layer, and propagate deeply into the adjacent layers, and finally extend to the entire coating.…”

Analysis of Mechanical Properties of TiB₂-TiC+Ni/TiAl/Ti Graded Materials Prepared by FAPAS

“…The cooling boundary conditions of upper, lower face and side face were applied. In the process of cooling from 1200℃ to room temperature, the convection coefficient was 5 W/(m 2 •K), the equivalent stress and deformation were analyzed [13][14][15].…”

High-Energy-Density Coating of High Temperature Advanced Materials for Energy-Efficient Performance

“…Therefore, large thermally induced mechanical stresses are set up in the interface regions. In the past, this problem was circumvented, though with limited technical or commercial success, through techniques such as diffusion coating, functionally gradient coating, and bond coatings via physical vapor deposition (PVD) [1][2][3], chemical vapor deposition (CVD) [4][5][6][7], thermal spraying [8][9][10][11], and weld overlay [12][13] techniques. Techniques such as diffusion coating have proven useful for producing coatings with good elevated-temperature properties.…”