Abstract
Silicon-containing calcium phosphate (Si-CaP) coatings were fabricated by radio frequency (rf) magnetron sputtering using the targets prepared from hydroxyapatite (HA) powder with different silicon content. A powder of Si-HA (Ca10(PO4)6-x(SiO4)x(OH)2-x, x=0.5 and 1.72) was prepared by mechanochemical activation and then used as a precursor-powder to prepare a target for sputtering. The titanium substrate was acid etched and treated with pulsed electron beam with an energy density of 15 J/cm2. The average crystallite size as determined by XRD was 28 nm for the coatings obtained using the target prepared from the Si-HA powder (x=0.5), whereas Si-CaP (Si-HA powder x=1.72) films showed an amorphous structure. The nanohardness and the Young's modulus of the Si-CaP coating (x=0.5) deposited on titanium treated by pulsed electron beam are enhanced to 4.5 and 113 GPa compared to titanium substrate. Increase of Si content resulted in a dramatic decrease of the nanohardness and Young's modulus of Si-CaP films. However, Si-CaP coatings with the highest Si content revealed significantly lower values of elastic modulus, but slightly higher values of H/E and H3/E2 than did the non-coated specimens. Rf-magnetron sputtering allowed us to produce Si- CaP coatings with higher nanohardness and lower elastic modulus compared to titanium substrate.
Original language | English |
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Title of host publication | IOP Conference Series: Materials Science and Engineering |
Publisher | Institute of Physics Publishing |
Volume | 98 |
Edition | 1 |
DOIs | |
Publication status | Published - 3 Nov 2015 |
Event | 3rd International Youth Conference on Interdisciplinary Problems of Nanotechnology, Biomedicine and Nanotoxicology, Nanobiotech 2015 - Tambov, Russian Federation Duration: 21 May 2015 → 22 May 2015 |
Other
Other | 3rd International Youth Conference on Interdisciplinary Problems of Nanotechnology, Biomedicine and Nanotoxicology, Nanobiotech 2015 |
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Country | Russian Federation |
City | Tambov |
Period | 21.5.15 → 22.5.15 |
ASJC Scopus subject areas
- Engineering(all)
- Materials Science(all)