mold powders are fluxing agents used as raw materials in the steel industry, which play very important role inprocessing stability and final surface quality of a product. surface quality depends particularly on the viscosity and the heat transfer of infiltrated mold flux between the mold wall and the solidified steel shell. heat flux across the interfacial gap depends on thermal properties of s...

In this study, an extraction method and environmental scanning electron microscopy (SEM) are employed to reveal the changes in the occurrence mode of fluorine in a coal-fired power plant in Inner Mongolia, China. The different occurrence states of fluorine during coal combustion and emission show that fluorine in coal mainly assumes insoluble inorganic mineral forms. The results illustrate that...

The aim of conducting this research was to evaluate the viscosity change in the continuous casting of steel mold powders by altering their chemical compositions, using hot stage microscope analysis. 4 low-fluorine samples containing such compositions as MnO, Fe2O3, Li2O, TiO2 and ZnO, as well as another fluorine-free sample containing a combination of Fe2O3 and TiO2, were prepared in this resea...

A three-phase junction formed between a solid electrode placed solutions of the organic phase and aqueous is employed for localized electrochemically assisted nylon-6,6 deposition. The fluorine-doped tin oxide (FTO) conductive support (serving as working electrode) immersed into cell filled with solution 1,6-hexanediamine (1,6-DAH) adipoyl chloride (AC) dissolved in 1,2-dichloroethane. interfac...

We have determined fluorine abundances from the [F II] λ4789 and [F IV] λ4060 nebular emission lines for a sample of planetary nebulae (PNe). Our results show that fluorine is generally overabundant in PNe, thus providing new evidence for the synthesis of fluorine in asymptotic giant branch (AGB) stars. [F/O] is found to be positively correlated with the C/O abundance ratio, in agreement with t...

Abstract We have developed a new method to measure the viscosity of micrometric films by thermomechanical analysis with hemispherical probe millimetric diameter. The loading curve (displacement vs. time) recorded as tip crosses whole film at constant load until it touches substrate is fitted theoretical shape that has been obtained after solving problem liquid flow under tip. validated measurin...

A compact, high-brightness and practically debris-free laser-plasma soft x-ray source for proximity x-ray lithography is described. The target of the source is small liquid fluorocarbon droplets injected into vacuum with a piezoelectrically vibrated nozzle. Emission from heliumand hydrogenlike fluorine in the 1.2–1.7 nm wavelength range was determined to ;2310 photons/~sr-pulse!, which correspo...

High levels of fluorine in soil may pose health risks and require remediation. In this study, the feasibility using a practical chemical washing method for removal from an enriched was evaluated. The procedures were optimized through experimental analyses various solutions conditions (i.e., solution concentration, solid–liquid ratio, agitation speed, reaction time). Additionally, effects techni...