Subscribe Now Subscribe Today
Research Article
 

A Study of Sintering Tempratures Variation on Microstructure Developement of Strontium Hexaferrite Millscale-Derived



Raba`ah Syahidah Azis , Mansor Hashim , Noorhana Yahya and Norlaily M. Saiden
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail
ABSTRACT

This paper describes the effect of controlling sintering temperatures on microstructure development of strontium hexaferrite from millscale derived. The sample was prepared by the recyling the waste steel-making product from Malaysina steel factories. Using a Curie temperature separation technique, the Wustite FeO contained in the millscale was separated by Curie temperature separation technique using deionized water at 90 °C/100 °C in the presence of 1T external field. The wustite was then oxidized in air at 400 °C/500 °C/600 °C for 10 hours. And XRD phase analysis showed that a very high percentage of Fe2O3 was present in the final powder preparation. A conventional processing method was then done to prepare hexagonal SrFe12O19 pallet shaped samples. The samples were sintered at different temperatures (1200 °C, 1250 °C, 1300 °C and 1350 °C) in air for 10 hours. The effect of controlling sintering temperature on orientation grain growth (0.3μm-0.7μm) in SrFe12O19 was confirmed by the microstructure surface scan using SEM and was in good agreement with the XRD analysis based on the peak intensity of the (107) plane. Analysis of samples was also done on grain size, Curie temperature and density.

Services
Related Articles in ASCI
Similar Articles in this Journal
Search in Google Scholar
View Citation
Report Citation

 
  How to cite this article:

Raba`ah Syahidah Azis , Mansor Hashim , Noorhana Yahya and Norlaily M. Saiden , 2002. A Study of Sintering Tempratures Variation on Microstructure Developement of Strontium Hexaferrite Millscale-Derived. Journal of Applied Sciences, 2: 1092-1095.

DOI: 10.3923/jas.2002.1092.1095

URL: https://scialert.net/abstract/?doi=jas.2002.1092.1095

REFERENCES
1:  Babu, V. and P. Padaikathan, 2001. Structure and hard magnetic properties of barium hexaferrite with and without La203 prepared by ball milling. J. Magnetism Magn. Mater., 3: 1-4.

2:  Ghate, B.B. and A. Goldman, 1990. Ferromagnetic. Ceramics, 15: 702-704.

3:  Knudsen, F.P., 1959. Dependance of mechanical strength of brittle polycrystalline specimens on porosity and grain size. J. Am. Ceramic Soc., 42: 376-387.
Direct Link  |  

4:  Lee, Y.C., S.Y. Park, M.K. Choi and S.O. Yoon, 2001. Effect of grain orientation on abnormal grain growth in Ba-hexaferrite. Ceramic Int., 27: 215-218.
CrossRef  |  

5:  Zhai, H., Y. Xu, J. Liu, G. Yang and T. Jin et al., 1989. Magnatic anisotropy of hexaferrites. Proceedings of the 5th International Conference on Ferrites, (ICF'89), Bombay, India, pp: 473-478.

©  2021 Science Alert. All Rights Reserved