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Su, Y. Jennifer; Wang, Hsin; Porter, W.D.; López, A.; Faber, K. T.

doi:10.1023/a:1017932617123

Cited by 21 publications

(1 citation statement)

References 17 publications

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“…In the classic double-layer TBCs, YSZ is used as the ceramic top coat and MCrAlY (M = Ni, Co) as the bond coat. Yttria stabilized zirconia (YSZ) is commonly used as the top coat of TBC because of its low thermal conductivity (Su et al, 2001) and high thermal expansion coefficient (Cao et al, 2004). MCrAlY is widely used as metallic bond coat of TBC system because of its relatively low thermal conductivity [12∼15 W/(m•K)] (Abedi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Influence of Bond Coat on Thermal Shock Resistance and Thermal Ablation Resistance for Polymer Matrix Composites

et al. 2021

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Polymer matrix composites (PMCs) have been widely used in aero industry because of its low density and high strength-to-weight ratio. However, the application of PMCs is still limited by poor abrasion resistance, weak oxidation resistance and low operation temperature. In this study, Cu (Al)/NiCrAlY/YSZ triple layer coating system was deposited on glass fiber reinforced polyimide matrix composites (FPM) by means of High Velocity Oxygen Fuel (HVOF) for metallic coatings and Atmospheric Plasma Spraying (APS) for YSZ coating. The influences of different bond coats and different thickness of the top coat on the thermal shock resistance and thermal ablation resistance of the coating system was investigated. Compared with Al particle, Cu particle has a high density and correspondingly a high kinetic energy during spraying by HVOF, resulting in a high bonding strength between the Cu coating and FPM substrate. In the thermal shock test, the coating Cu/NiCrAlY/YSZ has a much longer lifetime than the coating Al/NiCrAlY/YSZ. After high-speed impact on the substrate, there is a great compressive stress at the interface, which makes a plastic deformation to the substrate, and the particles are closely embedded into the substrate to form a strong mechanical interlock. The coating system consisting of 50 μm Cu, 50 μm NiCrAlY, and 200 μm 8YSZ exhibited the best thermal shock resistance, thermal ablation resistance and bonding strength. The increase of the top coat thickness will lead to the increase of residual stress and the decrease of bonding strength. The failure mechanism of the coating is mainly attributed to the residual stress in the deposition process and the thermal stress caused by thermal expansion mismatch.

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Section: Introductionmentioning

confidence: 99%

Influence of Bond Coat on Thermal Shock Resistance and Thermal Ablation Resistance for Polymer Matrix Composites

et al. 2021

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Aerosol delivery of mammalian cells for tissue engineering

Roberts

Wyslouzil

Bonassar

2005

Biotech & Bioengineering

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We developed a two fluid atomizer to spray mammalian cells suspended in phosphate buffered saline (PBS)-Pluronic F-127 polymer solutions. We used the device to spray suspensions of bovine articular chondrocytes and porcine tracheal epithelial cells, in either PBS or the polymer solutions, and studied their viability and growth kinetics. Under the operating conditions examined in this study, the cells had better than 70% viability after spraying, the growth rates were comparable to cells that were not sprayed, and the appearance of the cells at confluence was normal.

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