Detail publikace

Synthesis and characterization on atomphospheric plasma sprayed amorphous silica doped hydrxoyapatite coatings

XU, J. JOGUET, D. ČÍŽEK, J. KHOR, K. LIAO, H. CODDET, C. CHEN, W.

Originální název

Synthesis and characterization on atomphospheric plasma sprayed amorphous silica doped hydrxoyapatite coatings

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Plasma sprayed hydroxyapatite (HA) coatings have been widely investigated for application on surface of biomedical metals to improve bonding and interaction between body tissues and implant. In this study, a small amount of amorphous silicon dioxide (silica,~1, 2, 5 wt.%) was introduced into HA slurry which was subsequently spray-dried into powder form. The powder feedstock was then sprayed onto Ti-6Al-4V alloy substrates by an atmospheric plasma spraying technology. To improve the bonding strength of as-sprayed coatings, the substrates were pre-heat treated to 250'C by plasma. The characteristics of the as sprayed coatings were investigated by various technologies inclusive of scanning electron microscopy (SEM), X-ray diffraction and X-ray photoelectron spectrometry, and Raman spectrometry. The adhesive bonding strength of the as-sprayed coatings was specified using a universal testing system. Modulus and hardness of the coatings were investigated using nano-hardness tester. The results showed that, with pre- substrate heat treatment, the presence silica have enhanced the hardness, modulus and adhesive strength of coatings. Incorporation of Si has affected the structure of HA crystal involving the exchange of oxygen and silicon. In addition, in vitro osteoblasts cellular responses were assessed and discussed to investigate the cell proliferation and differentiation on the as sprayed coatings.

Klíčová slova

Hydroxyapatite; Silica; Atmospheric plasma spraying; Coatings;Osteoblasts

Autoři

XU, J.; JOGUET, D.; ČÍŽEK, J.; KHOR, K.; LIAO, H.; CODDET, C.; CHEN, W.

Rok RIV

2012

Vydáno

25. 6. 2012

Nakladatel

Elsevier

ISSN

0257-8972

Periodikum

Surface and Coatings Technology

Ročník

206

Číslo

22

Stát

Švýcarská konfederace

Strany od

4659

Strany do

4665

Strany počet

7

URL

http://www.sciencedirect.com/science/article/pii/S0257897212004410

Plný text v Digitální knihovně

http://hdl.handle.net/11012/31001

BibTex

@article{BUT96783,
  author="Jinling {Xu} and David {Joguet} and Jan {Čížek} and Khiam Aik {Khor} and Han Lin {Liao} and Christian {Coddet} and Wei Ning {Chen}",
  title="Synthesis and characterization on atomphospheric plasma sprayed amorphous silica doped hydrxoyapatite coatings",
  journal="Surface and Coatings Technology",
  year="2012",
  volume="206",
  number="22",
  pages="4659--4665",
  issn="0257-8972",
  url="http://www.sciencedirect.com/science/article/pii/S0257897212004410"
}