Abstract TiNi shape memory alloy exhibits an excellent cavitation erosion resistance. Therefore, it's effective method for preventing by applying this material as a coating. In paper, the effect of Co element addition on resistance based coating deposited atmospheric plasma spraying (APS) was investigated. The microstructure and microhardness were characterized. results show that lamellar micro...

Abstract Silicon coatings are usually produced by atmospheric plasma spraying (APS) and used as bond coats in environmental barrier coatings. The deposition efficiency (DE) of silicon powders is generally at a low level APS processes. reasons for the DE values have not been sufficiently investigated literature. aim this study was to investigate detail influence process parameters on coating str...

BACKGROUND The Air Force Health Study was launched in 1980 as part of a Federal effort to resolve the Agent Orange issue. OBJECTIVES To study diabetes and cancer with additional adjustment for days of spraying, calendar period of service, and time spent in Southeast Asia (SEA). METHODS This was a longitudinal study of veterans of Operation Ranch Hand, the unit responsible for spraying Agent...

A spraying evaporation system applied to brine disposal is reported, which is mainly used for disposing the brine with concentration more than 100,000 mg/L. A computational fluid dynamics (CFD) simulation has been carried out to study the brine droplet evaporation and diffusion process in high temperature air flow. A discrete-phase model in spraying evaporation system is developed and a simulat...

We measured airborne exposures to the biological insecticide Bacillus thuringiensis var. kurstaki (Btk) during an aerial spray program to eradicate gypsy moths on the west coast of Canada. We aimed to determine whether staying indoors during spraying reduced exposures, to determine the rate of temporal decay of airborne concentrations, and to determine whether drift occurred outside the spray z...

Combinations of NiCoCrAlY APS and high-velocity oxygen fuel (HVOF) bond coatings were deposited on alloy 247 disk substrates with yttria-stabilized zirconia (YSZ) top to assess the benefit air plasma sprayed (APS) ‘flash’ coatings. Using 1-h cycles at 1100 ℃ in 10% H2O HVOF-only APS-only as a baseline, it was found that flash extended average coating lifetime by 16% 35% thicker performing best....

Titanium and its alloys are wildly used in industries. Shrouded plasma spray can be considered as a useful technology to produce low oxide containing titanium coatings. In this paper, the effect of shroud spraying on chemical composition thickness coatings were investigated. plasma-sprayed deposited onto mild steel substrates. Air also for comparison under same parameters. Those then studied te...

Multi-electrode plasma torches are becoming increasingly popular in the thermal spray community due to their good stability and high power plasma jet even when operated with inert gases. Currently the models in use feature either three cathodes and a single anode or three individual anodes connecting to a single cathode. The motivation for development of these plasma torches is based on the inh...