Abstract MCrAlX powder compositions (M = Ni,Co and X Y, Hf, Si or combination) are often thermally sprayed via vacuum plasma spray (VPS), low pressure (LPPS) high velocity oxy-fuel to produce temperature oxidation hot corrosion resistant bond coats for thermal barrier coatings (TBCs). Cold technology is currently considered as a promising alternative the traditional solutions, having advantage ...

The introduction of organic solvents into an inductively coupled plasma (ICP) has been studied. Limiting aspiration rates for various organic solvents were determined for a Hildebrand nebuliser with a mini-Pyrex spray chamber, a cooled Pyrex spray chamber and a large Pyrex spray chamber. Detection limits for metal species were determined. Linear dynamic ranges were found to be at least 3-4 orde...

The sea spray generation function quantifies the rate at which spray droplets of a given size are produced at the sea surface. As such, it is important in studies of the marine aerosol and its optical properties and in understanding the role that sea spray plays in transferring heat and moisture across the air–sea interface. The emphasis here is on this latter topic, where uncertainty over the ...

Spray atomization is a common process found in different industries, where sprays under high injection pressure are widely recorded in the literature. Nonetheless, research on spray breakup mechanism under low pressure in pharmaceutical industry is still relatively rare. Numerical model in the Lagrangian approach was modified for simulating the spray formation from a nasal spray device in the c...

This paper reports on the response of hydroxyapatite (HA) coatings, fabricated using two deposition technologies, to immersion in simulated body fluid (SBF). The deposition methods used were: plasma spray, a commercial standard, and CoBlast, a novel low temperature microblast technique. In the case of the latter, HA coatings are deposited by simultaneous blasting HA and abrasive powders concent...

Submitted for the DFD10 Meeting of The American Physical Society Coaxial twin-fluid atomization with pattern air gas streams CHIN HEI NG, ALBERTO ALISEDA, University of Washington — Coaxial twin-fluid atomization has numerous industrial applications, most notably fuel injection and spray coating. In the coating process of pharmaceutical tablets, the coaxial atomizing air stream is accompanied b...

Coated powder particles composed of a ceramic core and a metallic coating are being considered for plasma spray applications. The goal of using these powders is to produce particulate-reinforced metal-matrix composite coatings. In this work, the feasibility of plasma spray processing in producing these composite coatings is evaluated. A numerical model is presented to analyze the in-flight ther...

The goal is to investigate, theoretically and through analyzing existing data, the role that sea spray plays in transferring heat, moisture, and momentum across the air-sea interface, especially in high winds. Ultimately, I plan to develop simple, fast, physics-based parameterizations for these air-sea fluxes for use in large-scale models, especially those simulating tropical and extratropical ...

Air: Propargite has very negligible vapor pressure (3.89 x 10 mmHg); therefore, it is not readily volatilized into the atmosphere. The low Henry’s law constant, <9.43 x 10 atmmg.mol at 25C, indicates that propargite is unlikely to volatilize into air from an aqueous solution (Lyman, et al., 1982). Aside from drift that is generated by spray applications, propargite is not expected to be found i...

We demonstrate the synergistic effects of combining atmospheric pressure plasma generation together with aerosolization resultant plasma-activated water using direct current electrospraying for effective chemical-free spray-based surface disinfection. Besides facilitating efficient aerosol pretreated water, DC electrospray itself also constitutes a secondary source that can further enhance plas...