Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique
The mechanical alloying technique was used to prepare barium hexaferrite (BaM) with 3, 5, 10 and 20 wt% cobalt oxide (Co3O4). In this work, steel waste flakes were cold-rolling steel mill for several hours to form a fine powder. The steel waste powder was purified by using magnetic separation to iso...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications
2016
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/54735/1/Magnetic%20properties%20and%20microstructures%20of%20cobalt%20substituted%20barium%20hexaferrites%20derived%20from%20steel%20waste%20product%20via%20mechanical%20alloying%20technique.pdf |
| _version_ | 1796976135705198592 |
|---|---|
| author | Azis, Raba'ah Syahidah Hashim, Mansor Zakaria, Azmi Hassan, Jumiah Daud, Noruzaman Mohd Shahrani, Nuraine Mariana Pua, Chong Siang |
| author_facet | Azis, Raba'ah Syahidah Hashim, Mansor Zakaria, Azmi Hassan, Jumiah Daud, Noruzaman Mohd Shahrani, Nuraine Mariana Pua, Chong Siang |
| author_sort | Azis, Raba'ah Syahidah |
| collection | UPM |
| description | The mechanical alloying technique was used to prepare barium hexaferrite (BaM) with 3, 5, 10 and 20 wt% cobalt oxide (Co3O4). In this work, steel waste flakes were cold-rolling steel mill for several hours to form a fine powder. The steel waste powder was purified by using magnetic separation to isolate the magnetic and non magnetic particles. The method was continued for Curie temperature separation technique to separate the magnetic ions by varied Curie temperature of the magnetic powder. The purified powder was then oxidize at 500 °C at 6 °C/mins to form hematite, Fe2O3. The steel waste-derived hematite was used as the raw material in preparing BaM ferrites. The BaCO3, Fe2O3and different percentages of Co3O4 (Co) were mixed and milled for several hours by using mechanical alloying. The powder were pelletised in 11 × 1 mm (diameter × height) and the sintered at 1200 °C for 10 hours. The addition of Co2+/3+ ions to the BaM shows a varying in the magnetic properties of BaM. By increasing the Co doping, the remanence Mr was reduced from 17.6 emu/g to 6.2 emu/g. The coercivity Hc results varying magnitude from 102 Oe to 1079 Oe. The Mr and Hc of undoped BaM is obtain at 14.6 emu/g and 860 Oe, respectively. The grain size of BaM also increases with Co doping. The densities of the compounds are decreasing with increasing Co doping with a maximum value of 4.2 g/cm3. |
| first_indexed | 2024-03-06T09:21:27Z |
| format | Article |
| id | upm.eprints-54735 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:21:27Z |
| publishDate | 2016 |
| publisher | Trans Tech Publications |
| record_format | dspace |
| spelling | upm.eprints-547352018-04-20T06:48:24Z http://psasir.upm.edu.my/id/eprint/54735/ Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique Azis, Raba'ah Syahidah Hashim, Mansor Zakaria, Azmi Hassan, Jumiah Daud, Noruzaman Mohd Shahrani, Nuraine Mariana Pua, Chong Siang The mechanical alloying technique was used to prepare barium hexaferrite (BaM) with 3, 5, 10 and 20 wt% cobalt oxide (Co3O4). In this work, steel waste flakes were cold-rolling steel mill for several hours to form a fine powder. The steel waste powder was purified by using magnetic separation to isolate the magnetic and non magnetic particles. The method was continued for Curie temperature separation technique to separate the magnetic ions by varied Curie temperature of the magnetic powder. The purified powder was then oxidize at 500 °C at 6 °C/mins to form hematite, Fe2O3. The steel waste-derived hematite was used as the raw material in preparing BaM ferrites. The BaCO3, Fe2O3and different percentages of Co3O4 (Co) were mixed and milled for several hours by using mechanical alloying. The powder were pelletised in 11 × 1 mm (diameter × height) and the sintered at 1200 °C for 10 hours. The addition of Co2+/3+ ions to the BaM shows a varying in the magnetic properties of BaM. By increasing the Co doping, the remanence Mr was reduced from 17.6 emu/g to 6.2 emu/g. The coercivity Hc results varying magnitude from 102 Oe to 1079 Oe. The Mr and Hc of undoped BaM is obtain at 14.6 emu/g and 860 Oe, respectively. The grain size of BaM also increases with Co doping. The densities of the compounds are decreasing with increasing Co doping with a maximum value of 4.2 g/cm3. Trans Tech Publications 2016 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/54735/1/Magnetic%20properties%20and%20microstructures%20of%20cobalt%20substituted%20barium%20hexaferrites%20derived%20from%20steel%20waste%20product%20via%20mechanical%20alloying%20technique.pdf Azis, Raba'ah Syahidah and Hashim, Mansor and Zakaria, Azmi and Hassan, Jumiah and Daud, Noruzaman and Mohd Shahrani, Nuraine Mariana and Pua, Chong Siang (2016) Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique. Materials Science Forum, 846. pp. 388-394. ISSN 0255-5476; ESSN: 1662-9752 https://www.scientific.net/MSF.846.388 10.4028/www.scientific.net/MSF.846.388 |
| spellingShingle | Azis, Raba'ah Syahidah Hashim, Mansor Zakaria, Azmi Hassan, Jumiah Daud, Noruzaman Mohd Shahrani, Nuraine Mariana Pua, Chong Siang Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| title | Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| title_full | Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| title_fullStr | Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| title_full_unstemmed | Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| title_short | Magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| title_sort | magnetic properties and microstructures of cobalt substituted barium hexaferrites derived from steel waste product via mechanical alloying technique |
| url | http://psasir.upm.edu.my/id/eprint/54735/1/Magnetic%20properties%20and%20microstructures%20of%20cobalt%20substituted%20barium%20hexaferrites%20derived%20from%20steel%20waste%20product%20via%20mechanical%20alloying%20technique.pdf |
| work_keys_str_mv | AT azisrabaahsyahidah magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique AT hashimmansor magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique AT zakariaazmi magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique AT hassanjumiah magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique AT daudnoruzaman magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique AT mohdshahraninurainemariana magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique AT puachongsiang magneticpropertiesandmicrostructuresofcobaltsubstitutedbariumhexaferritesderivedfromsteelwasteproductviamechanicalalloyingtechnique |