Deposition of Alumina-titania Nanostructured Coating by a New Multi-chamber Gas-dynamic Accelerator

The aim of the study was to characterize alumina-titania (Al[2]O[3]:Ti wt ratio = 87:13) coatings were deposited by a new multi-chamber gas-dynamic accelerator on a grit blasted steel substrate. The aluminatitania coatings were characterized using scanning electron microscopy, X-ray diffraction techniques and Vickers hardness tester at a test load 200 g. The coating was well-adhered onto corrosion-resistant steel substrate. Obtained coatings possessed a unique microstructure consisting of fully melted regions with the microstructure similar to a typical thermal sprayed lamellar morphology and areas comprising unmelted or partially melted particles. The dense alumina-titania coatings with hardness of 657 ± 70 HV0.2 and porosity of less than 0.6% have been prepared by a new multi-chamber gas-dynamic accelerator

Study of the fractional composition of electroerosive powder materials of the tungsten nickel iron alloy obtained in lighting kerosene

The article presents the results of experimental research aimed at studying the fractional composition of electroerosive powder materials of the tungsten nickel iron alloy obtained in lighting kerosene. It has been found that more than half of the total number of particles is particles with a size of less than 47.7 microns. It was also noted that particles with a size less than or equal to 29.37 microns in the powder include 20.0% of the total volume. The conducted research makes it possible to determine the most relevant field of application of the obtained powder materials and will improve the quality of scientific and technical developments in the field of application of electroerosive powder materials

Study of the fractional composition of electroerosive powder materials of the tungsten nickel iron alloy obtained in lighting kerosene

The article presents the results of experimental research aimed at studying the fractional composition of electroerosive powder materials of the tungsten nickel iron alloy obtained in lighting kerosene. It has been found that more than half of the total number of particles is particles with a size of less than 47.7 microns. It was also noted that particles with a size less than or equal to 29.37 microns in the powder include 20.0% of the total volume. The conducted research makes it possible to determine the most relevant field of application of the obtained powder materials and will improve the quality of scientific and technical developments in the field of application of electroerosive powder materials

Establishing reference values for central blood pressure and its amplification in a general healthy population and according to cardiovascular risk factors

Estimated central systolic blood pressure (cSBP) and amplification (Brachial SBP-cSBP) are non-invasive measures potentially prognostic of cardiovascular (CV) disease. No worldwide, multiple-device reference values are available. We aimed to establish reference values for a worldwide general population standardizing between the different available methods of measurement. How these values were significantly altered by cardiovascular risk factors (CVRFs) was then investigated.AtCor Medical via an unrestricted gran