ELECTRODEPOSITION AND CHARACTERIZATION OF NANOCRYSTALLINE ZNCOFE THN FILMS

سال انتشار: 1390
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 365

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شناسه ملی سند علمی:

UFGNSM03_126

تاریخ نمایه سازی: 10 تیر 1396

چکیده مقاله:

In this study Zn-Co-Fe thin films with nanocrystalline structure were electrodeposited in sulfate solutions under different conditions. The effects of applied current density and ions concentrations were investigated on surface morphology, films composition and phase structures. Scanning electron microscopy (SEM) equipped with EDS analyzer and x-ray diffraction (XRD) were utilized for characterization of deposited films. EDS map results demonstrated that increasing the Co and Fe content of the deposit leads to finer structure. SE-SEM micrographs showed two different types of morphologies. With increasing current density or cobalt concentration needle shape structure changed into globular or cauliflower-like structure. X-ray diffraction results indicated that the phase structure of the deposits was not according to the equilibrium Zn-Co-Fe phase diagram. The average grain sizes estimated by Scherer s formula were below 80nm; therefore all deposited films had nanocrystalline structure.

کلیدواژه ها:

ZnCoFe electrodeposition ، nanostructure ، current density and ion concentration ،

نویسندگان

A MEHRABIAN BARDAR

School of Metallurgy de Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran

M. HEYTDARZADEHSOH

School of metallurgy and materials, College of Engineering, University of Tehran, Tehran, Iran

S. MEHRIZI

School of Metallurgy & Materials, College of Engineering, University of Tehran, Tehran, Iran