Fabrication Of Strontium Ferrite Magnetic Material Through Wet Processing

Nik Norzaliza , Long Hassan (2008) Fabrication Of Strontium Ferrite Magnetic Material Through Wet Processing. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of doing this project is to evaluate the phase composition for calcined ferrite using SEM-EDX and XRD and to evaluate microstructure effects on calcined materials. The raw material used in this study is strontium ferrite which is combination between strontium carbonate and iron oxide. The material was mill and mixed with ethanol during ball milling process. The next process continues with calcined in 12500C of temperature and followed by crushing process. First sample is sintered at 12500C and second sample sintered at 12700C. Then the calcined powder is mixed by using 2 different percentages of Nickel using Tambling mixing. Third sample consist of 1% of Nickel and 99% of calcined powder and fourth sample is consisting 2% of Nickel and 98% of calcined powder. Both of third and fourth samples are sintered at 12700C. The grains size of ferrite is analysis with Scanning Electron Microscope (SEM)/ EDX and XRD. Backscattered image is carried out from the EDX to evaluate the chemical analysis and morphology. Physical analysis of the sample is carried out using Electronic densimeter to measure the density. The main phase compositions in calcined powder are strontium ferrite and  Fe2O3. SEM indicated that a continuous network of pores exist in the microstructure make the value of density low. Besides, it could be observed that there were small amount of Nickel on the surface of grains boundaries. Addition of Nickel as additive strongly affects the structural and morphological of the samples.

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