Materials Literature
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In the grinding of high speed steel, the high temperature grinding zone often leads to poor surface quality such as grinding burn, micro-cracks and tensile residual stresses. In the paper, the cooling-air technology was adopted to study the grinding of high speed steel. The experimental results show that cooling-air g…
An experimental-theoretical method is proposed for determining the mechanical properties of structures subject to corrosive wear. The corresponding apparatus is developed.
In the process of deep etching of silicon, the metal film or the oxide film served as silicon protective layer needed to be etched before using plasma etching technology. In order to solve the etch rates variance of different aperture sizes and different pitchs periodic patterns, by controlling the water bath temperat…
Catalytic hydrolysis decomposition of dichlorodifluoromethane (CCl 2 F 2 ) in the presence of water vapor and oxygen was studied over a series of solid acids using a fixed-bed reactor. Solid acid MoO 3 /ZrO 2 displayed the highest activity, over which the conversion of CCl 2 F 2 reached 100 % at 250 °C. CO 2 was the m…
Manufacturers of consumer products consistently seek to improve marketed products in terms of both safety and efficacy. The desire for continued improvement is seen even in well-established products such as catamenial products which have existed in some form for thousands of years. A recent innovation in the design of…
The aim of the work is to synthesize Mn substituted ZnO nanoparticles by co-precipitation method with chemical formula Zn 1-x Mn x O , where x = 0.00, 0.05, 0.10 and 0.15 and to characterize its structural, morphological and magnetic properties. X-ray diffraction studies confirm the presence of wurtzite (hexagonal) cr…
Lead strontium zirconate titanate (PSZT) ceramic is as one kind of piezoelectric materials can convert between stress and electric. Because of high performance, low cost of PSZT material, this kind of material are widely researched [2, 3] and used in the areas such as electrical sensors, actuators, alarm equipments et…
magnesium hydroxide whiskers; ABS; mechanical properties Abstract: The magnesium hydroxide (MH) whiskers/ABS composites were prepared by melt-extrusion with whiskers as fillers. Zinc stearate was used as modifier to improve the compatibility of the composites. The mechanical properties of ABS enhanced by different cot…
The problems of scattering of plane and cylindrical waves by a cylindrical metamaterial shell are solved rigorously. The influence of the geometric dimension of the shell, the value of the negative refractive index of the metamaterial medium, and the location of the cylindrical wave source on the near (far) field stru…
The temperature dependence of the density of eutectic alloy of lead-potassium system (90.7 at. % Pb) was investigated using gamma-ray attenuation technique over the temperature range 293–950 K of solid and liquid states. The density changes during solid-liquid phase transition were directly measured for the first time…
Plastics Engineering is the official publication of the Society of Plastics Engineers (SPE). We provide plastics professionals with a wealth of information about machinery, technological advances, materials innovations, sustainability, and more.
This paper presented the application of microwave-discharge plasma apparatus which was used to evaluate the catalytic properties of ZrB 2 -based ultra-high temperature ceramics in the simulated real service environment by the wall temperature response method based on the heat balance principle. The results showed that…
Perovskite lead titanate crystals with various morphologies were successfully synthesized via a hydrothermal reaction route with different lead sources. X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron micr…
In this work we study the possibility of synthesizing silicon nanopowders from silicon monoxide with particles from 7 to 20 nm in size using a chemicothermal method. The nanopowders are studied with the help of X-ray phase and X-ray structural analysis, electron scan microscopy, and spectrophotometry. The value of the…
Covalently tethered well-defined new three-arm star hydrophilic poly(ethylene glycol) monomethacrylate (PEGMA) brushed nanoparticles on silicon surface have been successfully prepared by (i) synthesis a novel type of three-arm star-shaped preceding initiator, trifunctional hydroxy-based N-allyl-3,4,5-trihydroxybenzami…
Porous poly(dimethylsiloxan) (PDMS) membranes have been fabricated by using sodium bicarbonate powder and polystyrene microspheres to generate the pores. Large gold nanostars (AuNSs) have been synthesized by a one-pot surfactant-free method by using gold seeds, and the stars have been embedded into the porous material…
Cerium oxide and uranium oxide microspheres are being produced via an internal gelation sol-gel method to investigate alternative fabrication routes for space nuclear fuels. Depleted uranium and non-radioactive cerium are being utilized as surrogates for plutonium-238 (Pu-238) used in radioisotope thermoelectric gener…
One of the main requirements of the truck tire sidewall are flexing resistance, tensile strength and tear resistance, as well as resistance to weather conditions experienced by tires during use, which include exposure to sunlight and ultraviolet radiation. Therefore, the requirements and changing circumstances led to…
In this paper, we have searched for superconductivity by measuring ohmic resistivity as a function of temperature in amorphous carbon films deposited by pulsed laser deposition and doped by ion implantation with sulfur and phosphorus ions. The doping concentrations were varied from 0.0003 to 4 Vol% for sulfur and 0.00…
Hierarchical porous ceria with nanocrystalline was successfully synthesized using filter paper as biotemplate. Unique biomorphic microstructures were characterized by Field Emission Scanning Electron Microscope (FESEM), transmission electron microscopy (TEM) and nitrogen absorption-desorption technique. The obtained c…