All Outputs (81)

Thermal properties and calcium-magnesium-alumino-silicate (CMAS) interaction of novel γ-phase ytterbium-doped yttrium disilicate (γ-Y1.5Yb0.5Si2O7) environmental barrier coating material (2024)
Journal Article

Rare-earth disilicates are promising candidates for thermal and environmental barrier coatings (TEBC) in gas turbines that safeguard SiCf/SiC ceramic matrix composites (CMCs) from thermal degradation and environmental attacks. Here, we report a syste... Read More about Thermal properties and calcium-magnesium-alumino-silicate (CMAS) interaction of novel γ-phase ytterbium-doped yttrium disilicate (γ-Y1.5Yb0.5Si2O7) environmental barrier coating material.

Alumina/GNPs coating on textured WC/Co substrate: microstructure and tribology (2024)
Journal Article

This work aims to provide a method for improving the tribological properties of WC/Co substrates. Laser surface texturing technology was employed to fabricate micro-grooves on the substrate surfaces. Suspension high velocity oxy fuel thermal spraying... Read More about Alumina/GNPs coating on textured WC/Co substrate: microstructure and tribology.

Active learning-driven uncertainty reduction for in-flight particle characteristics of atmospheric plasma spraying of silicon (2023)
Journal Article

The first-of-its-kind use of the active learning (AL) framework in thermal spray is adapted to enhance the prediction accuracy of the in-flight particle characteristics. The successful AL framework implementation via Bayesian Optimisation is benefici... Read More about Active learning-driven uncertainty reduction for in-flight particle characteristics of atmospheric plasma spraying of silicon.

Multilayer GZ/YSZ thermal barrier coating from suspension and solution precursor plasma spray (2023)
Journal Article

Gas turbines rely on thermal barrier coating (TBC) to thermally insulate the nickel-based superalloys underneath during operation; however, current TBCs, yttria stabilised zirconia (YSZ), limit the operating temperature and hence efficiency. At an op... Read More about Multilayer GZ/YSZ thermal barrier coating from suspension and solution precursor plasma spray.

Microstructural Study of Cold-Sprayed CoCrFeNiMn High Entropy Alloy (2023)
Journal Article

The rapid development of cold spraying technology for additive manufacturing of engineering components has made it a viable option for developing thick deposits from high-entropy alloys (HEAs). The microstructure of cold-sprayed CoCrFeNiMn deposit wa... Read More about Microstructural Study of Cold-Sprayed CoCrFeNiMn High Entropy Alloy.

SiC/YAG composite coatings by a novel liquid fuelled high velocity oxy-fuel suspension thermal spray (2023)
Journal Article

Despite recent advances in suspension-based thermal spray techniques, there is still a need to widen the capability of available thermal spray setups to handle suspension to explore new compositions and improve the properties and performance of exist... Read More about SiC/YAG composite coatings by a novel liquid fuelled high velocity oxy-fuel suspension thermal spray.

Multilayer GZ/YSZ thermal barrier coating from suspension and solution precursor thermal spray (2023)
Journal Article

Rare-earth (RE) zirconates, such as gadolinium zirconate (GZ), gained much attraction to be used for the next generation TBC. A double-layer and triple-layer TBC were deposited using the suspension and solution precursor high velocity oxy fuel (HVOF)... Read More about Multilayer GZ/YSZ thermal barrier coating from suspension and solution precursor thermal spray.

Atmospheric plasma spraying of ytterbium disilicate for abradable and environmental barrier coatings: A story of processing-microstructure relationships (2023)
Journal Article

Environmental barrier coatings (EBCs) are required to protect SiC based composites in high temperature, steam containing combustion environments found in the latest generation of high efficiency gas turbine aeroengines. Ytterbium disilicate (YbDS) ha... Read More about Atmospheric plasma spraying of ytterbium disilicate for abradable and environmental barrier coatings: A story of processing-microstructure relationships.

A new hybrid suspension and solution precursor thermal spray for wear-resistant silicon carbide composite coatings (2022)
Journal Article

Silicon Carbide (SiC) coatings offer exceptional wear resistance and excellent tribological characteristics; however, it is a challenging material to be thermally sprayed due to a lack of melting point. In this study, a hybrid, single-step suspension... Read More about A new hybrid suspension and solution precursor thermal spray for wear-resistant silicon carbide composite coatings.

Steam Degradation of Ytterbium Disilicate Environmental Barrier Coatings: Effect of Composition, Microstructure and Temperature (2022)
Journal Article

Recession of environmental barrier coatings (EBC) in environments containing steam is a pressing concern that requires further research before their implementation in gas turbine engines can be realized. In this work, free-standing plasma-sprayed Yb2... Read More about Steam Degradation of Ytterbium Disilicate Environmental Barrier Coatings: Effect of Composition, Microstructure and Temperature.

Correction to: Thermal Spraying of Ultra-High Temperature Ceramics: A Review on Processing Routes and Performance (2022)
Journal Article

When originally published, the author list contained an incorrect initial for the fourth listed author. The name should have been published to read: R. G. Wellman. The original article has been corrected.

Numerical and Experimental Analysis of the Deformation Behavior of CoCrFeNiMn High Entropy Alloy Particles onto Various Substrates During Cold Spraying (2022)
Journal Article

The bonding mechanisms of a wide range of metallic materials in cold spraying have been studied, mainly attributed to adiabatic shear instability (ASI) at high strain rates, whereas the impact and deformation behavior of high entropy alloys (HEAs) on... Read More about Numerical and Experimental Analysis of the Deformation Behavior of CoCrFeNiMn High Entropy Alloy Particles onto Various Substrates During Cold Spraying.

Thermal Spray Coatings for Electromagnetic Wave Absorption and Interference Shielding: A Review and Future Challenges (2022)
Journal Article

This review aims to consolidate scattered literature on thermally sprayed coatings with nonionizing electromagnetic (EM) wave absorption and shielding over specific wavelengths potentially useful in diverse applications (e.g., microwave to millimeter... Read More about Thermal Spray Coatings for Electromagnetic Wave Absorption and Interference Shielding: A Review and Future Challenges.

High temperature (900 °C) sliding wear of CrNiAlCY coatings deposited by high velocity oxy fuel thermal spray (2022)
Journal Article

Nickel based superalloy are in demand for high temperature applications and their corrosion, erosion and wear resistance have been investigated for a long time. Nickel chromium (NiCr) alloys are widely used for corrosion resistant coatings, while chr... Read More about High temperature (900 °C) sliding wear of CrNiAlCY coatings deposited by high velocity oxy fuel thermal spray.

Interaction of CMAS on thermal sprayed ytterbium disilicate environmental barrier coatings: A story of porosity (2021)
Journal Article

Molten calcium magnesium alumina-silicates (CMAS) represent a challenge for the current generation of rare earth silicates environmental barrier coatings (EBCs). Their interaction with ytterbium disilicate (Yb2Si2O7) free-standing coatings deposited... Read More about Interaction of CMAS on thermal sprayed ytterbium disilicate environmental barrier coatings: A story of porosity.

Solution precursor thermal spraying of gadolinium zirconate for thermal barrier coating (2021)
Journal Article

Gadolinium zirconate (GZ) is an attractive material for thermal barrier coatings (TBCs). However, a single layer GZ coating has poor thermal cycling life compared to Yttria Stabilized Zirconia (YSZ). In this study, Solution Precursor High Velocity Ox... Read More about Solution precursor thermal spraying of gadolinium zirconate for thermal barrier coating.

A convolution-based approach to cold spray additive manufacturing (2021)
Journal Article

Cold Spray Additive Manufacturing (CSAM) is a well-established technology that has recently attracted interest for forming 3D shapes in a fast and scalable fashion. Nonetheless, the resulting surface of cold sprayed parts normally requires post-depos... Read More about A convolution-based approach to cold spray additive manufacturing.

Development and Characterization of Phosphate-Based Glass Coatings via Suspension High-Velocity Oxy-Fuel (SHVOF) Thermal Spray Process (2021)
Journal Article

Phosphate based glasses (PBGs) are promising materials for biomedical applications due to their biocompatible and fully resorbable characteristics in aqueous environments. These glasses can be coated on to metal substrate via the technique of suspens... Read More about Development and Characterization of Phosphate-Based Glass Coatings via Suspension High-Velocity Oxy-Fuel (SHVOF) Thermal Spray Process.

Wear performance of graphene nano platelets incorporated WC-Co coatings deposited by hybrid high velocity oxy fuel thermal spray (2021)
Journal Article

WC-Co coatings have been used as wear resistant coatings in aero engines for decades, and research is still ongoing to further improve the performance of these coatings through compositional modifications to reduce wear. The coatings are used for unl... Read More about Wear performance of graphene nano platelets incorporated WC-Co coatings deposited by hybrid high velocity oxy fuel thermal spray.

YAG thermal barrier coatings deposited by suspension and solution precursor thermal spray (2021)
Journal Article

Yttrium aluminium garnet (YAG) is a promising topcoat material for thermal barrier coatings due to its high temperature stability and better CMAS (calcium-magnesium-alumino-silicate) resistance. YAG topcoats were deposited by suspension and solution... Read More about YAG thermal barrier coatings deposited by suspension and solution precursor thermal spray.