الحاجی, امیر
[ 1 ] - بررسی تأثیر اندازه و توزیع نانو ذرات الماس بر سختی و عبور نور نانوکامپوزیت سولفیدروی/الماس
در این پژوهش نانوکامپوزیت سولفیدروی/الماس حاوی یک درصد حجمی نانوذرات الماس با اندازه ذرات اولیه کمتر از 10 نانومتر و کمتر از 500 نانومتر با روش پرس داغ تف جوشی شد و تأثیر اندازه و توزیع ذرات نانوالماس در زمینه سولفیدروی بر سختی و میزان عبور نور آن ها مطالعه گردید. افزودن نانوذرات الماس منجر به افزایش سختی سولفیدروی در همه نمونه های تف جوشی شده، گردید اما این افزایش سختی یکسان نبود و با اندازه ...
[ 2 ] - Effect of Calcination Temperature and Li / TFA Molar Ratio on Morphology and Phase of Lithium Fluoride Nanoparticles Produced by Fluorolytic Sol-Gel Method
In this research, synthesis of lithium fluoride (LiF) nanoparticles by fluorolytic sol-gel method has been studied. Moreover, the effect of lithium ion to fluorine source molar ratio and calcination temperature on particle size and phase of LiF nanoparticles were investigated. Lithium acetate (C2H3LiO2), trifluoroacetic acid (TFA), ethylene glycol monobutyl ether and oleic acid were used as so...
[ 3 ] - Effect of Chelating Agent on Morphology and Phase Evolution of Spinel Nanoparticles Synthesized via Sol-Gel Method
The purpose of this study was to evaluate the effect of glycyrol (tri-dentate, GLY) and ethylenediamine (double- dentate clay, en) chelating agents on phase and morphology changes of spinel nanoparticles synthesized by sol-gel method. Characterization of samples was performed by X-ray diffraction (XRD) and field-emission scanning electron microscope (FESEM) equipped with energy dispersive X-ray...
[ 4 ] - Influence of Temperature, Time, pH, Capping Agent Concentration and Zn/Se Molar Ratio on Morphology and Phase Evolution of Zinc Selenide Nanoparticles Synthesized by Hydrothermal Method
The aim of the study was to investigate the effect of temperature, time, pH, capping agent concentration (mercaptoacetic acid), Zn to Se and Se to reducing agent (NaBH4) mole ratios on morphology, phase developments and size of zinc selenide nanoparticles prepared by hydrothermal method. Characterization of zinc selenide nanoparticles was performed by Field Emission Electron Microscopy (FESEM),...