Effect of friction hardening pre-treatment on increasing cytocompatibility of alkali heat-treated Ti-6Al-4V alloy

Alkali heat treatment (AHT) has been widely used as an effective surface chemical modification to improve the bioactivity and biocompatibility of titanium and its alloys; however, this method suffers from long process time. In this study, friction hardening (FH) as a cost-effective and straightforwa...

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Bibliographic Details
Published inSurface & coatings technology Vol. 353; pp. 148 - 157
Main Authors Shahriyari, F., Razaghian, A., Taghiabadi, R., Peirovi, A., Amini, A.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 15.11.2018
Elsevier BV
Subjects
Alkali-heat treatment
Alloys
Biocompatibility
Cell adhesion
Cytocompatibility
Deformation effects
Friction
Friction hardening
Hardening
Heat treating
Heat treatment
Organic chemistry
Plastic deformation
Pretreatment
Production costs
Structural hierarchy
Substrates
Surgical implants
Ti-6Al-4V alloy
Titanium base alloys
Wettability
Friction hardening
Alkali-heat treatment
Ti-6Al-4V alloy
Cytocompatibility
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Summary:Alkali heat treatment (AHT) has been widely used as an effective surface chemical modification to improve the bioactivity and biocompatibility of titanium and its alloys; however, this method suffers from long process time. In this study, friction hardening (FH) as a cost-effective and straightforward severe plastic deformation (SPD) technique prior to AHT was applied in order to reduce the time-consumption and the manufacturing costs of AHT method. The results showed that the chemically modified FHed (FAHT) samples could prepare finer hierarchical nano/meso-structured network, with an average size range of 20–130 nm, on the surface of Ti-6Al-4V alloy at significant lower treating time. According to XPS results, this surface nanostructure possessed the toxic-element-free oxide layers. In-vitro cell culture showed that FAHT substrates, especially FAHT600-12 sample could remarkably enhance the cell-substrate interactions including: cell adhesion, spreading, proliferation as well as ALP activity. This can be attributed to both finer topography and better wettability. [Display omitted] •Study of the surface properties of FHed samples that chemically modified via AHT•Rapid fabrication of chemically modified alkali heat treated sample with friction hardening treatment•Enhancement of cytocompatibility of the treated alloys rather than alkali heat treated samples
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2018.08.051