Sintering Effect on the Microstructure And Magnetic Properties of Co-Alxoy Composite Compound
| Main Authors: | Mulyaningsih, Sri; Research Centre for Metallurgy-Indonesian Institute of Sciences,INDONESIA, Purwanto, Setyo; Centre for Nuclear Materials Industry-BATAN, INDONESIA, Mujamilah, Mujamilah; Centre for Nuclear Materials Industry-BATAN, INDONESIA, A. Adi, Wisnu; Centre for Nuclear Materials Industry-BATAN, INDONESIA, Manaf, Azwar; Department of Materials Science-Univ. of Indonesia, INDONESIA |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Institut Teknologi Sepuluh Nopember
, 2008
|
| Subjects: | |
| Online Access: |
http://iptek.its.ac.id/index.php/jts/article/view/154 http://iptek.its.ac.id/index.php/jts/article/view/154/135 |
Daftar Isi:
- Research on sintering effect on the micro structure and the magnetic properties of composite Co-AlxOy materials has been done. The experiment was carried out by high energy milling (HEM) to refine Co and Al sample powder, followed by sintering process. The composition of sample was Co73Al27 wt% with weight ratio to the ball was 1:2.7. The milling time was varied within 4.5, 12 and 20 hours, while sintering process was conducted at 384oC and 484oC. Several new peaks were found after sintering process and identified as a Co-Al2O4 compound. The experiment data shows the saturation magnetization Ms value was decline for the entire sample by the sintering process. The Mr value for the 12h milling was remind stable about 9 emu/gr but, for 4.5 milling was decline from 17.5 to 9.2 and 6.2 emu/gr , while for 20h milling from 13,5 to 9.25 and 8 emu/gr. No visible changes in the microstructure are observed.