Materials Literature
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In order to improve the performance of the piston head on the existing conditions, and the warm extrusion forming technology was put forward based on the internal combustion engine piston head traditional production process. The warm extrusion process scheme and finite element boundary conditions was designed reasonab…
This paper presents the design of actuator using magnetostrictive material under zero pre-stress conditions for direct current input, which is being developed to move friction pads of a disc brake for braking action. Comparison of analytical, experiment and Maxwell simulation of coils in free air is being carried out…
Abstract Review: 116 refs.
With water as the medium, PVP as stabilizer and ammonia as complexing agents and adjusting pH value of the solution, we report an all-aqueous synthesis of highly photoluminescent and stable ZnS quantum dots (QDs) by water-phase synthesis reaction between ZnCl2 and NaS at different temperatures and times. The optimal r…
A variety of solid acid catalysts especially 12-Tungstophosphoricacid (DTP) supported on silica has been reported for the acylation of anisole, veratrole and toluene. However, the activity of this catalyst is susceptible to coke formation or poor activity. This paper reports the novelties of steam treated SiO2-DTP cor…
In this study, the pure nanocrystalline Cu columns were fabricated by the brush electrodeposition technique at 20°C and at different deposition current densities in the range of 200 240 mA cm-2. The columns shows high strain rate sensitivity in the room temperature compressive test. In the tested strain rate range, th…
Poly-(lactic acid) or PLA is a biodegradable polymer produced from renewable resources. Recently new polymerization routes have been discovered which allows increasing the produced quantity. Hence, PLA becomes of great interest to lessen the dependence on petroleum-based plastics. Due to its good mechanical properties…
Self-lubricant roller bearing from composite material of caprolactam, carbon fiber, and graphite was made. And its molding process was discussed. Its friction and deformation performance was studied. Moreover, different varieties of yarns were spun in the spinning machine for contrast tests. The results show that: The…
Abstract In addition to the uranyl dichromates (IV) and (V), the uranyl chromate/dichromate compounds Rb2(UO2)(CrO4)(Cr2O7) (VI), (Me2NH2)2(UO2)(CrO4) (Cr2O7) (VII), (Me2NH2)2(UO2) (CrO4)2(Cr2O7) (H2O)2 (VIII), and (iPrNH3)2(UO2) (CrO4)2(Cr2O7) (H2O)2 (IX) are prepared by slow evaporation of aqueous solutions of CrO3,…
in order to resolve the weaker wettability between the copper and SiC particles and analyze the micro-structure and thermal conductivity properties of the SiCp/Cu composites, the chemical plating technology and pressure-less sintering technique were utilized to fabricate SiCp/Cu composites. The results proved that SiC…
By adopting coating damage simulation research method with open circuit potential and electrochemical impedance spectroscopy, the influence of different damage levels of green organic composite coating to its protective performance has been studied. The research found that the variation of open circuit potential partl…
Based directly on the neural network weights from testing and evaluating the coatings on real vehicle equipment, by inputting the values of the EIS characteristic parameter received from the real vehicle testing, memorizing the neural network weights under guideless training, it provides a quick and convenient method…
In the aerospace industry lightweight design in combination with fast and reliable manufacturing processes are key components to defend the leading position in the worldwide competition. In this frame it is an overall goal to reduce the number of process steps in order to produce parts for an aircraft to its minimum.…
Palygorskite had large applications in chemical, environmental protection, medicine processes and so on. However, since the mineral limitations of natural palygorskite, both improving its quality and meeting the need of industry, palygorskite usually needs to be activated before using it. The influences of activation…
Hemp was treated with guanidine carbonate to impart flame retardance. The thermal degradation of the samples were studied by thermogravimetry (TG) and differential thermal analysis (DTA). The flame retardance was determined by LOI. Morphology of the char structure was studied by SEM to obtain information concerning th…
Abstract Review: 46 refs.
Magnesium (Mg) alloys are the lightest metals that can be used for structural components, and the press forming of Mg alloy sheets has recently attracted attention in automobile and electrical industries. To increase the number of applications of the press forming, it is crucial to understand mechanical properties of…
Mechanical properties of steel fiber concrete under dynamic load had been obtained through dynamic loading experiments of steel fiber concrete in different volume ratios. The experimental results indicate that the dynamic load strength of steel fiber concrete is obviously more than the static load strength, the dynami…
Interactions between thermal plasmas and synthetic fibers such as polyamide, polyester, phenol and aramid were investigated by thermal plasma irradiation technique. Understanding the above interactions is crucial to design effective flame retardant synthetic fiber clothes with arc resistance to protect a human from ar…
The purpose of this study was to prepare and characterize tinidazole-loaded poly (lactide-co-ethylene carbonate) (PLEC) microspheres. These biodegradable microspheres were prepared by solvent evaporation method. The effect of selected emulsifier, polymer type, and ratio of tinidazole to PLEC were investigated. An aque…