Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65487
Title: Enhancing the cell proliferation performance of NiTi substrate by laser diffusion nitriding
Authors: Ng, CH
Rao, N
Law, WC 
Xu, G
Cheung, TL
Cheng, FT
Wang, X
Man, HC 
Keywords: Cell proliferation
Implant materials
Laser diffusion nitriding
Nickel-titanium
Shape memory alloy
Issue Date: 2017
Publisher: Elsevier
Source: Surface and coatings technology, 2017, v. 309, p. 59-66 How to cite?
Journal: Surface and coatings technology 
Abstract: Nickel-titanium (NiTi) shape memory alloy is one of the popular implant materials in orthopaedic applications due to its special mechanical properties. However, the presence of Ni has raised safety concerns and hence limited its applications. In the present study, this issue was addressed through laser diffusion nitriding on NiTi to form TiN coating on the surface. Optimum laser parameters to produce desirable surface without changing the surface topography of NiTi substrate were determined. This paper detailed the nitriding of NiTi by fiber laser for enhancing the hydrophilicity and biological performance. The laser treated surfaces were characterized by scanning-electron microscopy (SEM) and X-ray diffraction (XRD). The wettability and cell viability performance were studied using contact angle measurement and MTT assay. The results demonstrated that an optimized laser treated surface could lead to improvements in biocompatibility of NiTi.
URI: http://hdl.handle.net/10397/65487
ISSN: 0257-8972
EISSN: 1879-3347
DOI: 10.1016/j.surfcoat.2016.11.008
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page view(s)

9
Last Week
4
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.