The effect of manganese oxide on the sinterability of hydroxyapatite
The sinterability of manganese oxide (MnO2) doped hydroxyapatite (HA) ranging from 0.05 to 1 wt% was investigated. Green samples were prepared and sintered in air at temperatures ranging from 1000 to 1400 °C. Sintered bodies were characterized to determine the phase stability, grain size, bulk densi...
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| Format: | Article |
| Language: | English |
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Elsevier
2007
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| Online Access: | http://eprints.utm.my/17127/1/RameshS2007_TheEffectofManganeseOxideontheSinterability.pdf |
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| author | Ramesh, S. Tan, C. Y. Peralta, C. L. Teng, W. D. |
| author_facet | Ramesh, S. Tan, C. Y. Peralta, C. L. Teng, W. D. |
| author_sort | Ramesh, S. |
| collection | ePrints |
| description | The sinterability of manganese oxide (MnO2) doped hydroxyapatite (HA) ranging from 0.05 to 1 wt% was investigated. Green samples were prepared and sintered in air at temperatures ranging from 1000 to 1400 °C. Sintered bodies were characterized to determine the phase stability, grain size, bulk density, hardness, fracture toughness and Young's modulus. XRD analysis revealed that the HA phase stability was not disrupted throughout the sintering regime employed. In general, samples containing less than 0.5 wt% MnO2 and when sintered at lower temperatures exhibited higher mechanical properties than the undoped HA. The study revealed that all the MnO2-doped HA achieved >99% relative density when sintered at 1100–1250 °C as compared to the undoped HA which could only attained highest value of 98.9% at 1150 °C. The addition of 0.05 wt% MnO2 was found to be most beneficial as the samples exhibited the highest hardness of 7.58 GPa and fracture toughness of 1.65 MPam1/2 as compared to 5.72 GPa and 1.22 MPam1/2 for the undoped HA when sintered at 1000 °C. Additionally, it was found that the MnO2-doped samples attained E values above 110 GPa when sintered at temperature as low as 1000 °C if compared to 1050 °C for the undoped HA. |
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| format | Article |
| id | utm.eprints-17127 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T18:31:40Z |
| publishDate | 2007 |
| publisher | Elsevier |
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| spelling | utm.eprints-171272017-10-23T13:29:11Z http://eprints.utm.my/17127/ The effect of manganese oxide on the sinterability of hydroxyapatite Ramesh, S. Tan, C. Y. Peralta, C. L. Teng, W. D. Q Science (General) TA Engineering (General). Civil engineering (General) The sinterability of manganese oxide (MnO2) doped hydroxyapatite (HA) ranging from 0.05 to 1 wt% was investigated. Green samples were prepared and sintered in air at temperatures ranging from 1000 to 1400 °C. Sintered bodies were characterized to determine the phase stability, grain size, bulk density, hardness, fracture toughness and Young's modulus. XRD analysis revealed that the HA phase stability was not disrupted throughout the sintering regime employed. In general, samples containing less than 0.5 wt% MnO2 and when sintered at lower temperatures exhibited higher mechanical properties than the undoped HA. The study revealed that all the MnO2-doped HA achieved >99% relative density when sintered at 1100–1250 °C as compared to the undoped HA which could only attained highest value of 98.9% at 1150 °C. The addition of 0.05 wt% MnO2 was found to be most beneficial as the samples exhibited the highest hardness of 7.58 GPa and fracture toughness of 1.65 MPam1/2 as compared to 5.72 GPa and 1.22 MPam1/2 for the undoped HA when sintered at 1000 °C. Additionally, it was found that the MnO2-doped samples attained E values above 110 GPa when sintered at temperature as low as 1000 °C if compared to 1050 °C for the undoped HA. Elsevier 2007 Article PeerReviewed application/pdf en http://eprints.utm.my/17127/1/RameshS2007_TheEffectofManganeseOxideontheSinterability.pdf Ramesh, S. and Tan, C. Y. and Peralta, C. L. and Teng, W. D. (2007) The effect of manganese oxide on the sinterability of hydroxyapatite. Science and Technology of Advanced Materials, 8 (4). pp. 257-263. http://dx.doi.org/10.1016/j.stam.2007.02.006 10.1016/j.stam.2007.02.006 |
| spellingShingle | Q Science (General) TA Engineering (General). Civil engineering (General) Ramesh, S. Tan, C. Y. Peralta, C. L. Teng, W. D. The effect of manganese oxide on the sinterability of hydroxyapatite |
| title | The effect of manganese oxide on the sinterability of hydroxyapatite |
| title_full | The effect of manganese oxide on the sinterability of hydroxyapatite |
| title_fullStr | The effect of manganese oxide on the sinterability of hydroxyapatite |
| title_full_unstemmed | The effect of manganese oxide on the sinterability of hydroxyapatite |
| title_short | The effect of manganese oxide on the sinterability of hydroxyapatite |
| title_sort | effect of manganese oxide on the sinterability of hydroxyapatite |
| topic | Q Science (General) TA Engineering (General). Civil engineering (General) |
| url | http://eprints.utm.my/17127/1/RameshS2007_TheEffectofManganeseOxideontheSinterability.pdf |
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