The metal transfer behavior of gas arc welding in a pure argon shielding was evaluated through experiments using standard solid wire and metal-cored wire. investigation conducted observation techniques based on recording images by high-speed camera equipped with laser assistance bandpass filters range currents. It observed that the mode became streaming when current increased Meanwhile, wire, d...

Bubble formation and growth on a water-splitting semiconductor photoelectrode under illumination with above-bandgap radiation provide a direct measurement of the gas-evolving reaction rate. Optical microscopy was used to record the bubble growth on single-crystal strontium titanate immersed in basic aqueous electrolyte and illuminated with UV light at 351/364 nm from a focused argon laser. By a...

In order to study the effect of gas atmosphere on forming performance laser powder bed fusion (LPBF), AlSi10Mg alloy was prepared by direct and in situ remelting under shielding argon nitrogen this study, its microstructure properties were characterized tested, respectively. The results show that is better than argon. Moreover, method can effectively enhance relative density mechanical AlSi10Mg...

This study investigated the joint properties of Fe-Pt alloy laser-welded to Co-Cr alloy. Cast plates (0.5 x 3.0 x 10 mm) were prepared with Fe-Pt and Co-Cr alloys. Fe-Pt plates were butted against Co-Cr plates and laser-welded using Nd:YAG laser. Control and homogeneously welded specimens were also prepared. Laser welding was performed with and without argon shielding. Tensile testing was condu...

tellurium nanostructures have been prepared by physical vapor deposition method in a tube furnace. the experiments were carried out under argon gas flow at a pressure of 1 mbar. tellurium powder was evaporated by heating at 350°c and 430°c and was condensed on substrates at 110–250°c, in the downstream of argon gas flow. the products were characterized by field emission scanning electron micros...

Emission spectra of constituent gas species from glow discharge plasmas using argon-helium, krypton-helium, argon-krypton, and krypton-argon gas mixtures were analyzed to elucidate collisional energy transfer between these gas species occurring in the plasma. In the argon-helium mixed gas plasma, the enhancement or quenching of particular Ar II lines was observed when helium was added to an arg...

Scanning electron microscopy, 3D optical surface profilometry, as well X-ray diffraction and backscatter analysis were implemented for studying the effects of both ultrasonic impact treatment (UIT) electrospark (UIET) procedures on microstructure, phase composition, mechanical tribological properties Ti-6Al-4V samples fabricated by wire-feed beam additive manufacturing. It was shown that he UIE...

This study aims to determine the effect of protective gas flow rate on tensile and shock strength welded joints dissimilar metals, namely aluminum 5052 – galvanized steel with Al-Si 4043 filler using argon as a shielding gas. The parameters used in this were 14, 17, 20 liters/minute current 80 A. results showed that higher gas, lower porosity defects occurred welding results, resulting values. ...

Argon is a noble gas element that has demonstrated narcotic and protective abilities that may prove useful in the medical field. The earliest records of argon gas have exposed its ability to exhibit narcotic symptoms at hyperbaric pressures greater than 10 atmospheres with more recent evidence seeking to display argon as a potential neuroprotective agent. The high availability and low cost of a...