A novel bioactive Ta/hydroxyapatite composite coating fabricated by cold spraying

[Display omitted] •A novel Ta/hydroxyapatite (HA) composite coating was fabricated.•Ta and HA are evenly distributed in the composite powders and composite coatings.•Ta and HA did not appear to undergo oxidation, decomposition and phase transformation.•The as-prepared Ta/HA composite coating has hig...

Full description

Saved in:
Bibliographic Details
Published in:Materials letters 2019-09, Vol.250, p.197-201
Main Authors: Tang, Junrong, Zhao, Zhipo, Liu, Housheng, Cui, Xinyu, Wang, Jiqiang, Xiong, Tianying
Format: Article
Language:English
Subjects:
Apatite
Biocompatibility
Biological activity
Biomaterials
Biomedical materials
Body fluids
Coating
Cold spraying
Composite coating
Decomposition
Hydroxyapatite
In vitro methods and tests
Materials science
Mechanical milling
Phase transitions
Simulated body fluid
Surgical implants
Ta/hydroxyapatite
Thick films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •A novel Ta/hydroxyapatite (HA) composite coating was fabricated.•Ta and HA are evenly distributed in the composite powders and composite coatings.•Ta and HA did not appear to undergo oxidation, decomposition and phase transformation.•The as-prepared Ta/HA composite coating has high bioactivity. To avoid the decomposition of hydroxyapatite (HA) and thus further increase its bioactivity, a novel bioactive Ta/HA composite coating (∼23 μm) is firstly fabricated by cold spraying mechanical milling Ta/HA composite powders. The results indicate that HA without decomposition and phase transformation is well contained and evenly distributed in the composite powders and coating. The simulated body fluid (SBF) test shows that bone-like apatite layer is mineralized on the surface of composite coating after 1–3 days. It demonstrates that the as-prepared Ta/HA composite coating has high bioactivity.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2019.04.123