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Splat formation and microstructure of solution precursor thermal sprayed Nb-doped titanium oxide coatings (2019)
Journal Article

Solution precursor thermal spray can become a breakthrough technology for the deposition of coatings with novel chemistries; however, the understanding of the process that the feedstock material undergoes is still lacking when compared to more tradit... Read More about Splat formation and microstructure of solution precursor thermal sprayed Nb-doped titanium oxide coatings.

The role of microstructural development in the hydrothermal corrosion of cast and HIPed Stellite 6 analogues in simulated PWR conditions (2019)
Journal Article

The corrosion behaviour of cast and HIPed Stellite 6 analogue materials in PWR-simulating conditions was investigated. The cast alloy exhibited localised corrosion at the boundary between the matrix and the M7C3 carbides, with this being attributed t... Read More about The role of microstructural development in the hydrothermal corrosion of cast and HIPed Stellite 6 analogues in simulated PWR conditions.

A Computational and Experimental Investigation into Radial Injection for Suspension High Velocity Oxy-Fuel (SHVOF) Thermal Spray (2019)
Journal Article

Suspension high velocity oxy-fuel thermal spray typically utilizes axial injections of suspension into the combustion chamber. There are certain cases where the oxygen-sensitive nanoparticles benefit from a reduction in the time and temperature spent... Read More about A Computational and Experimental Investigation into Radial Injection for Suspension High Velocity Oxy-Fuel (SHVOF) Thermal Spray.

Application of HVOF WC-Co-Cr coatings on the internal surface of small cylinders: Effect of internal diameter on the wear resistance (2019)
Journal Article

Due to the restrictions and mediocre performance of current methods of coating complex shaped parts in which line of sight processes currently struggle, the development of new coating methods is essential, with High Velocity Oxy-Fuel (HVOF) thermal s... Read More about Application of HVOF WC-Co-Cr coatings on the internal surface of small cylinders: Effect of internal diameter on the wear resistance.

Influence of KCl and HCl on a Laser Clad FeCrAl Alloy: In-Situ SEM and Controlled Environment High Temperature Corrosion (2019)
Journal Article

This study investigated the effects of HCl and KCl on a laser-clad FeCrAl coating at 450 °C in an in-situ ESEM followed by a furnace exposure. In all in-situ TEM cross-sections, three major phases were identified: an iron rich oxide, an iron-chromium... Read More about Influence of KCl and HCl on a Laser Clad FeCrAl Alloy: In-Situ SEM and Controlled Environment High Temperature Corrosion.

Inter-particle bonding in cold spray deposition of a gas-atomised and a solution heat-treated Al 6061 powder (2019)
Journal Article

The heat treatment of a number of gas-atomised aluminium alloys prior to cold spraying recently showed that the resultant microstructural modification was accompanied by an improvement in deposition; however, the relationship between the microstructu... Read More about Inter-particle bonding in cold spray deposition of a gas-atomised and a solution heat-treated Al 6061 powder.

Small punch creep testing of thermally sprayed Stellite 6 coating: A comparative study of as-received vs post-heat treatment (2019)
Journal Article

Thermally sprayed Stellite 6 coatings offer high wear and corrosion-erosion resistance at high temperature but the creep behaviour of such coatings is not well understood. In this paper, the microstructure and creep behaviour of a HVOF Stellite 6 coa... Read More about Small punch creep testing of thermally sprayed Stellite 6 coating: A comparative study of as-received vs post-heat treatment.

Preparation of MCrAlY-Al2O3 composite coatings with enhanced oxidation resistance through a novel powder manufacturing process (2019)
Journal Article

MCrAlY-Al 2 O 3 composite coatings were prepared by using high velocity oxygen fuel (HVOF) thermal spraying with bespoke composite powder feedstock for high temperature applications. Powder processing via a suspension route was employed to achieve a... Read More about Preparation of MCrAlY-Al2O3 composite coatings with enhanced oxidation resistance through a novel powder manufacturing process.

Effect of nozzle geometry on the gas dynamics and evaporation rates of Suspension High Velocity Oxy Fuel (SHVOF) thermal spray: a numerical investigation (2018)
Journal Article

Thermally sprayed coatings formed from sub-micron or nanoparticles feedstock provide enhanced coating properties and Suspension High Velocity Oxy Fuel (SHVOF) thermal spray is a process that allows the deposition of dense coatings from fine particula... Read More about Effect of nozzle geometry on the gas dynamics and evaporation rates of Suspension High Velocity Oxy Fuel (SHVOF) thermal spray: a numerical investigation.

Suspension high velocity oxy-fuel (SHVOF) spray of delta-theta alumina suspension: Phase transformation and tribology (2018)
Journal Article

Suspension high-velocity oxy-fuel (SHVOF) thermal spray is an emerging spray technology that enables the processing of nanometric feedstock. Although SHVOF thermal sprayed alumina coatings prepared from alpha alumina feedstock have been widely report... Read More about Suspension high velocity oxy-fuel (SHVOF) spray of delta-theta alumina suspension: Phase transformation and tribology.

Process parameter optimisation of laser clad iron based alloy: Predictive models of deposition efficiency, porosity and dilution (2018)
Journal Article

As a candidate coating material for heat-exchanger surfaces in commercial power generation boiler, an amorphous/glass forming Fe-Cr-B alloy NanoSteel SHS 7170 was deposited by a 2 kW fibre laser onto a boiler grade steel substrate (15Mo3). A comprehe... Read More about Process parameter optimisation of laser clad iron based alloy: Predictive models of deposition efficiency, porosity and dilution.

Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating (2018)
Journal Article

NiCrMo coatings with and without dispersed SiO2 were deposited using high velocity air-fuel (HVAF) technique. Thermogravimetric experiments were conducted in 5% O2+500 vppm HCl+N2 with and without a KCl deposit at 600 °C for up to 168 h. The SiO2-con... Read More about Effect of SiO2 dispersion on chlorine-induced high temperature corrosion of HVAF-sprayed NiCrMo coating.