Nowadays, 80–90% of the components airplanes are composed aluminum alloys. Another material with a high level corrosion resistance and is utilized in aircraft AA5052. When exposed to natural environment, AA5052 forms an oxide layer that shields alloy from corrosion. However, this eroded corrodes more quickly harsh weather conditions where aeroplane operates. On substrate, multilayered nanostruc...

In recent years, with the development of SiC composites in aero-engine hot-end components, environmental barrier coatings (EBCs) have received extensive attention. Moreover, order to elevate service temperature, it is a developing trend apply thermal (TBCs) low conductivity on EBCs coating system form thermal/environmental (T/EBCs). However, combination high coefficient expansion (CTE) TBCs CTE...

In this paper, the effect of microstructure on the thermal conductivity of plasma-sprayed Y2O3 stabilized ZrO2 (YSZ) thermal barrier coatings (TBCs) is investigated. Nine freestanding samples deposited on aluminum-base superalloy are studied. Cross-section morphology such as pores, cracks, m-phase content, grain boundary density of the coated samples are examined by scanning electron microscopy...

The failure of plasma-sprayed thermal barrier coatings (TBCs) during service is usually related to the cracking behavior. In this study, TBCs were prepared with two kinds agglomerated sintered yttria-stabilized zirconia (YSZ) powders different particle sizes. evolution mechanical properties and crack propagation behavior whole life stage studied by a shock test. effect powder size on was analyz...

High-entropy alloys (HEAs) have great potential to be used as high-temperature materials and in coating material applications due their combination of strength, ductility, thermal stability, wear, oxidation resistance. In this work, a new HEA alloy based on NiCoCrAlSi composition was designed deposited into metallic coatings by high-velocity oxy-fuel (HVOF) air plasma spray (APS) processes, wit...

Nondestructive evaluation (NDE) methods are being developed for thermal barrier coatings (TBCs) and for gas-separation membranes. For TBC applications, current NDE development is focused on infrared thermal imaging methods. Compared with optical and other methods, thermal imaging is quantitative so can be used to characterize TBCs during their entire life cycle, from as-processed condition to s...