title: Influence of manganese doping into HA powders on the properties of its dense bodies.
abstract: The effect of Manganese (Mn) addition on the Vickers hardness and relative density of nanocrystalline hydroxyapatite (HA) dense bodies were studied. The starting Mn doped HA powders was synthesized via sol-gel method with Mn concentration varies from 2 mol% up to 15 mol% Mn. The Mn doped HA disc samples were prepared by uniaxial pressing at 200MPa and subsequently sintered at 1300 degrees C. Characterization was carried out where appropriate to determine the phases present, bulk density, Vickers hardness of the various content of Mn doped HA dense bodies. The addition of Mn was observed to influence the color appearance of the powders and dense bodies as well. Higher Mn concentration resulted in dark grey powders. It was also found that the hardness and relative density of the material increased as the Mn content increased and influenced by the crystallinity of the prepared Mn doped HA powders.
authors.affiliation: Department of Manufacturing and Materials Engineering, International Islamic University Malaysia, P.O. Box 10, 50728 Kuala Lumpur, Malaysia.
authors.forename: A N
authors.initials: AN
authors.lastname: Natasha
authors.forename: I
authors.initials: I
authors.lastname: Sopyan
authors.forename: M
authors.initials: M
authors.lastname: Mel
authors.forename: S
authors.initials: S
authors.lastname: Ramesh
mesh_terms: D018786:Bone Substitutes / Q000138:chemical synthesis / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000138:chemical synthesis / Q000737:chemistry; D003460:Crystallization; D017886:Durapatite / Q000138:chemical synthesis / Q000737:chemistry*; D006801:Humans; D017895:Manganese Compounds / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D044367:Phase Transition; D011208:Powders / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D018786:Bone Substitutes; D020099:Coated Materials, Biocompatible; D017895:Manganese Compounds; D011208:Powders; D017886:Durapatite