hamid reza salimi jazi Articles List

List of Articles hamid reza salimi jazi

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1 - Effect of Reinforcer Percentage and Its Distribution on Mechanical Behavior of Alumina Reinforced Epoxy Composite
محمدحسین بینا کوروش شیروانی حمید رضا سلیمی جزی
20.1001.1.24233226.1395.10.4.1.2

In this paper, the shear and tensile properties of alumina reinforced epoxy composite have been studied. For this purpose, the composite samples were first produced with different weight percentages of alumina particles (10 to 50 percent). Then, the shear punching test More

In this paper, the shear and tensile properties of alumina reinforced epoxy composite have been studied. For this purpose, the composite samples were first produced with different weight percentages of alumina particles (10 to 50 percent). Then, the shear punching test was used for the evaluation of the shear and tensile properties of composite samples; the dispersion and distribution of alumina particles, interface of particles/ matrix, and the fracture surface of the samples were examined by the scanning electron microscope (SEM) equipped with EDS analyzer. The results of the tests showed that by the addition of alumina up to 30 percent resulted in homogenous and uniform distribution as well as more shear strength of composites. But, when the rate of the reinforcer exceeds 30 percent, the rate of the aggregation of the particles increases and consequently the composite strength is reduced. Also, a significant difference was observed between the fracture surface of pure epoxy and that of composites. Unlike pure polymers, the fracture surface of the composites reinforced with alumina (up to 30 percent) was more uneven, denoting an increase in the surface roughness due to the crack path deflection. Fracture in the reinforced composites with a percentage higher than 30 percent has again taken place due to the rate of low wetting of alumina particles with epoxy resin in particle-particle contacts. Manuscript profile
Open Access Article
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2 - Evaluation of the photocatalytic activity of ZnFe2O4-TiO2 composite coating elaborated by flame spraying process
امیرحسین نویدپور مهدی صالحی مهدی امیرنصر حمید رضا سلیمی جزی مهران آذرپور سیاهکلی یعقوب کلانتری
20.1001.1.24233226.1397.12.4.10.5

Among various techniques which have been used for degradation of chemical pollutants, advanced oxidation processes (such as photocatalytic process) have received attention due to their specific properties. In this investigation, ZnFe2O4-10wt% TiO2 composite film was ela More

Among various techniques which have been used for degradation of chemical pollutants, advanced oxidation processes (such as photocatalytic process) have received attention due to their specific properties. In this investigation, ZnFe2O4-10wt% TiO2 composite film was elaborated using flame spraying process. Powders of titania (TiO2: 75vol. % anatase, 25vol. % rutile) and zinc ferrite (ZnFe2O4), which was synthesized by mechanical alloying process, were mixed together (weight ratio of 1:9) and deposited on stainless steel 316 substrate. In order to evaluate the structure, morphology, and photo-adsorption ability of the coating, X-ray diffractometer (XRD), scanning electron microscopy (SEM), and UV-VIS-NIR spectroscopy were used, respectively. Photocatalytic performance of the deposited film was studied by bleaching of aquatic methylene blue solution with the concentration of 5 mg/Lit. The results showed that the composite coating, which was elaborated by flame spraying, possesses relatively good photo-adsorption ability as well as photocatalytic activity for photodegradation of methylene blue (under visible light irradiation). Manuscript profile

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List of Articles hamid reza salimi jazi