mirage

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

DSpace/Manakin Repository

 

Search DR-NTU


Advanced Search Subject Search

Browse

My Account

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

Show full item record

Title: Synthesis and characterization on atomphospheric plasma sprayed amorphous silica doped hydrxoyapatite coatings
Author: Xu, Jinling; Joguet, D.; Cizek, Jan; Khor, Khiam Aik; Liao, H. L.; Coddet, C.; Chen, William Wei Ning
Copyright year: 2012
Abstract: 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 Ti6Al4V 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.
Subject: DRNTU::Science::Medicine::Biomedical engineering
Type: Journal Article
Series/ Journal Title: Surface and coatings technology
School: School of Mechanical and Aerospace Engineering
Rights: © 2012 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Surface & Coatings Technology, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: DOI [http://dx.doi.org/10.1016/j.surfcoat.2012.05.042].
Version: Accepted version

Files in this item

Files Size Format View
11. Synthesis a ... spheric plasma sprayed.pdf 1.273Mb PDF View/Open
   

DOI Query

- Get published version (via Digital Object Identifier)
   

This item appears in the following Collection(s)

Show full item record

Statistics

Total views

All Items Views
Synthesis and characterization on atomphospheric plasma sprayed amorphous silica doped hydrxoyapatite coatings 242

Total downloads

All Bitstreams Views
11. Synthesis and characterization on atomphospheric plasma sprayed.pdf 144

Top country downloads

Country Code Views
United States of America 54
China 35
Singapore 21
India 9
France 5

Top city downloads

city Views
Mountain View 33
Beijing 28
Singapore 19
Tirur 7
Redwood City 4

Downloads / month

  2014-06 2014-07 2014-08 total
11. Synthesis and characterization on atomphospheric plasma sprayed.pdf 0 0 3 3