Thermal Shock Resistance of Stabilized Zirconia/Metal Coat on Polymer Matrix Composites by Thermal Spraying Process

2014 ◽  
Vol 23 (8) ◽  
pp. 1312-1322 ◽  
Author(s):  
Ling Zhu ◽  
Wenzhi Huang ◽  
Haifeng Cheng ◽  
Xueqiang Cao
Keyword(s):  
Thermal Shock ◽  
Polymer Matrix ◽  
Thermal Shock Resistance ◽  
Polymer Matrix Composites ◽  
Thermal Spraying ◽  
Matrix Composites ◽  
Stabilized Zirconia ◽  
Shock Resistance ◽  
Spraying Process

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

2021 ◽  
Vol 8 ◽  
Author(s):  
Jiahui Zhou ◽  
Jianing Jiang ◽  
Longhui Deng ◽  
Jingqi Huang ◽  
Jieyan Yuan ◽  
...  
Keyword(s):  
Residual Stress ◽  
Thermal Shock ◽  
Bonding Strength ◽  
Thermal Ablation ◽  
Thermal Shock Resistance ◽  
Polymer Matrix Composites ◽  
Coating System ◽  
Matrix Composites ◽  
Ablation Resistance ◽  
Shock Resistance

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.

Oxidation behavior of plasma-sprayed stabilized zirconia/Al coated polymer matrix composites

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 72331-72339 ◽  
Author(s):  
Wenzhi Huang ◽  
Haifeng Cheng ◽  
Yongjiang Zhou
Keyword(s):  
Thermal Oxidation ◽  
Oxidation Resistance ◽  
Plasma Spraying ◽  
Polymer Matrix ◽  
Oxidation Behavior ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Stabilized Zirconia ◽  
Plasma Sprayed

Stabilized zirconia/Al coatings were deposited on polymer matrix composites (PMCs) via plasma spraying, and exhibited good thermal oxidation resistance.

Improving Thermal Shock Resistance of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings by Laser Remelting

2012 ◽  
Vol 472-475 ◽  
pp. 2502-2507
Author(s):  
Zong Yin Duan ◽  
Dong Sheng Wang
Keyword(s):  
Thermal Shock ◽  
Thermal Barrier Coatings ◽  
Thermal Shock Resistance ◽  
Yttria Stabilized Zirconia ◽  
Thermal Barrier ◽  
Laser Remelting ◽  
Stabilized Zirconia ◽  
Barrier Coatings ◽  
Shock Resistance ◽  
Plasma Sprayed

This paper deals with the microstructure and thermal shock behavior of laser remelting of yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBCs) deposited by plasma spraying. The microstructures of the coatings were analyzed by scanning electron microscopy (SEM). It was found that the as-sprayed ceramic coating had laminated structure with high porosity. However, the coating exhibited a dense lamellar-like layer with segment cracks on the remained plasma-sprayed porous layer. Thermal shock experiments for the two kinds of TBCs were performed by water quenching method. Testing result showed that the laser-remelted TBC had better thermal shock resistance than the as-sprayed one. The damage mode of the as-sprayed TBC was great-size whole spalling. In contract, the failure mechanism of the laser-remelted one was mainly local pelling. Segmented cracks of the top ceramic coatings caused by laser remelting improved the stress accommodation and were mainly attributed to the enhancement for thermal shock life of TBC.

The Influence of Particles Size and Composition Variation of NiCr-CrC(20NiCr) Metal Matrix Composites Coatings Properties on Boiler Tubes Application

2017 ◽  
Vol 889 ◽  
pp. 30-35 ◽  
Author(s):  
Erie Martides ◽  
Budi Prawara ◽  
Husaini Ardy ◽  
Endro Junianto ◽  
Budi Priyono
Keyword(s):  
Particle Size ◽  
Thermal Shock ◽  
Metal Matrix ◽  
Thermal Shock Resistance ◽  
Resistance Testing ◽  
Matrix Composites ◽  
Spray Method ◽  
Hvof Thermal Spray ◽  
Boiler Tubes ◽  
Shock Resistance

Deposition of NiCr-CrC(20NiCr) metal matrix composite (MMCs) coating have been applied on the substrate of boiler tubes material with High Velocity Oxygen Fuel (HVOF) thermal spray method and constant parameter. Variation of particle size and composition on MMCs was conducted to determined the optimum conditions for boiler applications. Microvickers hardness, metallography and thermal shock resistance testing were investigated. The best performance for boiler tubes application is MMC NiCr-CrC(20NiCr) with 270 mesh of NiCr particles size and 60:40 of composition as evidence by the highest of hardness value (410 Hv) and slightly of discoloration after thermal shock resistance with two variation cooling medium. While at MMC NiCr-CrC(20NiCr) with 70:30 variation composition, coating hardness value will decrease in line with the smaller of particle size of NiCr.

Thermal shock resistance of tri‐layer Yb 2 SiO 5 /Yb 2 Si 2 O 7 /Si coating for SiC and SiC‐matrix composites

2018 ◽  
Vol 101 (10) ◽  
pp. 4743-4752 ◽  
Author(s):  
Xin Zhong ◽  
Yaran Niu ◽  
Hong Li ◽  
Haijun Zhou ◽  
Shaoming Dong ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Matrix Composites ◽  
Shock Resistance

AN INFLUENCE OF SELECTED MECHANICAL PARAMETERS OF MMC ON THE THERMAL SHOCK RESISTANCE

2008 ◽  
Vol 22 (31n32) ◽  
pp. 5807-5812
Author(s):  
DARIUSZ RUDNIK ◽  
ZBIGNIEW KOWALEWSKI ◽  
KRYSTYNA PIETRZAK ◽  
ANDRZEJ WOJCIECHOWSKI
Keyword(s):  
Thermal Shock ◽  
Metal Matrix ◽  
Thermal Shock Resistance ◽  
Mechanical Characteristics ◽  
Squeeze Casting ◽  
Matrix Composites ◽  
Mechanical Parameters ◽  
Theoretical Evaluation ◽  
Microscopy Method ◽  
Shock Resistance

The results concerning the basic mechanical properties are presented for selected metal matrix composites (MMC). Three types of composites were produced by means of squeeze casting and next heat treatment. An influence of reinforcement type on the crack appearance in matrix and composite material was analyzed. Theoretical evaluation of the thermal shock resistance was proposed on the basis of conventional mechanical characteristics. Moreover, the qualitative metallographic investigations were carried out using optical microscopy method. A good consistence between the theoretical evaluation of thermal shock resistance and experimental data was achieved.

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