Paper Title:
Effects of Ag-Doping on Microstructure and Mechanical Properties of Hydroxyapatite Films
  Abstract

Ag-doped hydroxyapatite films were deposited on a ZrO2 substrate using r.f. magnetron sputtering to improve the bioaffinity and mechanical properties of the hydroxyapatite. The resulting hydroxyapatite films exhibited a variation in their microstructure and mechanical properties relative to the Ag content. The variation in the (Ca, Ag)/P ratios suggested that some of the Ca2+ ions in the hydroxyapatite were replaced with Ag+ ions. After annealing at 800oC, the hydroxyapatite films showed a microstructure with crystalline nano-grains, whereas the Ag-doped hydroxyapatite films revealed the formation of crystallites embedded in the amorphous matrix. The hydroxyapatite films showed an average roughness of about 3~4nm, very smooth surface, and dense microstructure. The hardness and modulus of the films decreased with an increasing Ag content.

  Info
Periodical
Key Engineering Materials (Volumes 277-279)
Edited by
Kwang Hwa Chung, Yong Hyeon Shin, Sue-Nie Park, Hyun Sook Cho, Soon-Ae Yoo, Byung Joo Min, Hyo-Suk Lim and Kyung Hwa Yoo
Pages
113-118
DOI
10.4028/www.scientific.net/KEM.277-279.113
Citation
S. S. Park, H. J. Lee, I. H. Oh, B. T. Lee, "Effects of Ag-Doping on Microstructure and Mechanical Properties of Hydroxyapatite Films", Key Engineering Materials, Vols. 277-279, pp. 113-118, 2005
Online since
January 2005
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$32.00
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