Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique
A novel approach for depositing hydroxyapatite (HA) films on titanium substrates by using mechanical alloying (MA) technique has been developed. However, it was shown that one-hour heat treatment at 800°C of such mechanically coated HA layer leads to partial transformation of desired HA phase to bet...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Bioinorganic Chemistry and Applications |
| Online Access: | http://dx.doi.org/10.1155/2012/390104 |
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| _version_ | 1832565585320345600 |
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| author | Ahmed E. Hannora Alexander S. Mukasyan Zulkhair A. Mansurov |
| author_facet | Ahmed E. Hannora Alexander S. Mukasyan Zulkhair A. Mansurov |
| author_sort | Ahmed E. Hannora |
| collection | DOAJ |
| description | A novel approach for depositing hydroxyapatite (HA) films on titanium substrates by using mechanical alloying (MA) technique has been developed. However, it was shown that one-hour heat treatment at 800°C of such mechanically coated HA layer leads to partial transformation of desired HA phase to beta-tri-calcium phosphate (β-TCP) phase. It appears that the grain boundary and interface defects formed during MA promote this transformation. It was discovered that doping HA by silicon results in hindering this phase transformation process. The Si-doped HA does not show phase transition to β-TCP or decomposition after heat treatment even at 900°C. |
| format | Article |
| id | doaj-art-5794c7fb9e5d4434bf15f1f0dca57d76 |
| institution | Kabale University |
| issn | 1565-3633 1687-479X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Bioinorganic Chemistry and Applications |
| spelling | doaj-art-5794c7fb9e5d4434bf15f1f0dca57d762025-02-03T01:07:18ZengWileyBioinorganic Chemistry and Applications1565-36331687-479X2012-01-01201210.1155/2012/390104390104Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying TechniqueAhmed E. Hannora0Alexander S. Mukasyan1Zulkhair A. Mansurov2Faculty of Petroleum and Mining Engineering, Suez Canal University, Suez 43721, EgyptDepartment of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USAInstitute of Combustion Problems, Almaty 050012, KazakhstanA novel approach for depositing hydroxyapatite (HA) films on titanium substrates by using mechanical alloying (MA) technique has been developed. However, it was shown that one-hour heat treatment at 800°C of such mechanically coated HA layer leads to partial transformation of desired HA phase to beta-tri-calcium phosphate (β-TCP) phase. It appears that the grain boundary and interface defects formed during MA promote this transformation. It was discovered that doping HA by silicon results in hindering this phase transformation process. The Si-doped HA does not show phase transition to β-TCP or decomposition after heat treatment even at 900°C.http://dx.doi.org/10.1155/2012/390104 |
| spellingShingle | Ahmed E. Hannora Alexander S. Mukasyan Zulkhair A. Mansurov Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique Bioinorganic Chemistry and Applications |
| title | Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique |
| title_full | Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique |
| title_fullStr | Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique |
| title_full_unstemmed | Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique |
| title_short | Nanocrystalline Hydroxyapatite/Si Coating by Mechanical Alloying Technique |
| title_sort | nanocrystalline hydroxyapatite si coating by mechanical alloying technique |
| url | http://dx.doi.org/10.1155/2012/390104 |
| work_keys_str_mv | AT ahmedehannora nanocrystallinehydroxyapatitesicoatingbymechanicalalloyingtechnique AT alexandersmukasyan nanocrystallinehydroxyapatitesicoatingbymechanicalalloyingtechnique AT zulkhairamansurov nanocrystallinehydroxyapatitesicoatingbymechanicalalloyingtechnique |