Recently, high-performance lightweight materials with outstanding mechanical properties have opened up their way to some sophisticated industrial applications. As one of these systems, aluminum matrix composites/nanocomposites (AMCs) offer an outstanding combination of relative density, hardness, wear resistance, and mechanical strength. Until now, several additive manufacturing methods have be...

We examine the photo-assisted polarization loop in a BiFeO3 thin film under UV light illumination. BiFeO3 thin film prepared by pulsed laser deposition method onto the BaTiO3 thin film and the polarization behavior has been measured under poling voltage. Our results show the engineered polarization due to controllable schottky barrier under inverse poling voltage. This control on schottky barri...

Induction heating treatment (IHT) has recently been used to improve the bioactivity and biocompatibility of titanium its alloys, greatly related formation nanoscale oxide coating. In this work, effect ultrasonic on IHT oxidation behavior pure investigated. Ultrasonic-assisted was carried out for 13, 20 25 s. Submicro-/nano-scale morphological coatings with rutile anatase TiO2 were prepared surf...

In this study, NiAl bronze (NAB) alloys are processed using an ultrasonic vibration-assisted milling (UVAM) surface engineering technique. The strengthening mechanisms at different cutting speeds analysed through well-established models and experiments. increase in speed produced decrements of 29.5%, 26.6%, 5.6% the friction torques, accumulated dissipated energy, worn area, respectively. micro...

This study has been investigated, the effects of three different polar polyacrylamides (anionic, cationic, and nonionic) on asphaltene deposition in porous media. All experiments were carried out in various dead oil flow rates (0.2, 0.1 and 0.02 cc/min) and different polymer concentrations (500, 2500, 4000 ppm). The results indicated that asphaltene precipitation was affected by the presence of...

size reduction of high energy materials such as 1, 3, 5, 7-tetranitro- 1, 3, 5, 7-tetraaza cyclooctane (hmx) has considerable influences on improving their explosive characteristics. in this study, nanosized hmx par­ticles were produced using ultrasonically reprecipitation method by applying water as a safe and accessible antisolvent instead of unsafe conventional methods. sem photographs revea...

Spatial patterns and temporal changes in atmospheric-mercury (Hg) deposition were examined in a five-state study area in the Midwestern USA where 32% of the stationary sources of anthropogenic Hg emissions in the continental USA were located. An extensive monitoring record for wet and dry Hg deposition was compiled for 2001–2016, including 4666 weekly precipitation samples at 13 sites and 27 an...

We present the first analysis of precipitation chemistry data from the Great LakesAtmospheric Deposition (GLAD) network of wet-only precipitation samplers. Lake loadings werecalculated from 1or 2-yr (1982-1983) volume-weighted mean ion concentrations and 30-yr meanannual precipitation amounts, using an objective analysis method to interpolate measurements to a40 x 40 km square g...