In:
Biomedical Materials, IOP Publishing, Vol. 17, No. 2 ( 2022-03-01), p. 025007-
Abstract:
In the present work, 5 wt% CaB 6 /hydroxyapatite (HA) bioceramic coatings with different La 2 O 3 contents (0–0.6 wt%) have been fabricated by a laser cladding technique on Ti–6Al–4V. The effects of La 2 O 3 contents on microstructure and properties of the laser-cladded 5 wt% CaB 6 /HA coatings have been carefully investigated. The results show that the microstructure is obviously refined, and the structure is relatively uniform after doping 0.2–0.4 wt% La 2 O 3 . As the La 2 O 3 content increases, the corrosion resistance are found to increase firstly and then gradually decrease. The x-rays diffraction analysis confirms that the amount of HA and TCP (calcium phosphate) in the coating reaches maximum after doping 0.2 wt% La 2 O 3 . The La 2 O 3 -doped coatings show a significantly higher bone-like apatite precipitation after immersion in simulated body fluid compared with La 2 O 3 -free coating. In vitro experiment also shows that 5 wt% CaB 6 /HA bioceramic coatings with 0.2–0.4 wt% La 2 O 3 are more suitable for the attachment and proliferation of MG63 cells, exhibiting superior bioactivity and biocompatibility.
Type of Medium:
Online Resource
ISSN:
1748-6041
,
1748-605X
DOI:
10.1088/1748-605X/ac4b44
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2022
detail.hit.zdb_id:
2233169-4
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