Paper Title:
Microstructure and Properties of Biogenic Hydroxyapatite Doped with Magnetite
  Abstract

In this study the hydroxyapatite powder was sintered together with magnetite nanopowder, which due to its low reactivity is commonly used in medicine, eg. in magnetic resonance. Two types of sintered materials, containing equal content 6 mol% of biogenic hydroxyapatite (BGHAp), reinforced with 50 wt% of different glass phases, were tested. The same technological conditions comprising two-stage sintering with T1 (1100°C) and T2 (780°C) were used for both types of materials. For selected specimens 2 wt% of 9 nm powder of Fe3O4 was added. The microhardness of the specimens varies within quite wide range from 150 to 508 HV0.025. Compressive splitting strength of the specimens (measured along the sample diameter) is within a range of 3.61 – 4.99 MPa. Young’s modulus, modulus of rigidity and Poisson’s ratio are in the ranges of: 20.81 – 24.86 GPa, 7.89 – 9.71 GPa and 0.252 – 0.307, respectively. Indentation fracture toughness KIC is within a range of 0.6-1.0 MPa m1/2. The hysteresis loops were determined in order to asses the possibility of application of this material as affecting the drug delivery carriers. The specimens exhibit magnetization of the order of 1.5 emu/g.

  Info
Periodical
Edited by
P. VINCENZINI and R. GIARDINO
Pages
51-55
DOI
10.4028/www.scientific.net/AST.49.51
Citation
M. Szutkowska, M. Leonowicz, L.A. Ivanchenko, "Microstructure and Properties of Biogenic Hydroxyapatite Doped with Magnetite", Advances in Science and Technology, Vol. 49, pp. 51-55, 2006
Online since
October 2006
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Indra, S.W. Oh, Hee Joon Kim
Abstract:This work examined the mechanical properties of alumina that can directly be enhanced by ratio of nano sized alumina powders additives to...
821
Authors: Yu Li Sun, Dun Wen Zuo, Duo Sheng Li, Rong Fa Chen, Min Wang
Abstract:Hardness, elastic modulus and scratch resistance of single silicon wafer are measured by nanoindentation and nanoscratching using a...
52
Authors: Xiu Fang Wang, Yi Wang Bao, Kun Ming Li, Yan Qiu, Xiao Gen Liu
Abstract:The energy consumption of crushing is directly affected by the mechanical properties of cement materials. The elastic modulus, energy...
2587
Authors: M. Ziaee, Naghdali Choupani
Abstract:The present research examines analytically and experimentally the mode-I and mode-II and mixed mode-Interlaminar fracture toughness of PAN...
880
Authors: Umma Sankar, Meenaloshini Satgunam, Mahdi Amiriyan, Ramesh Singh, Wan Dung Teng
Abstract:The effect on densification and mechanical properties of 3 mol% Y-TZP ceramics doped with zinc oxide (0.1 wt.% to 1 wt.%), has been...
197