RF magnetron-sputtered coatings deposited from biphasic calcium phosphate targets for biomedical implant applications.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29744427.
- Also identified by DOI 10.1016/j.bioactmat.2017.07.003 and PMC identifier 5935179.
- Licence recorded as CC BY-NC-ND.
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Abstract
Bioactive calcium phosphate coatings were deposited by radio-frequency magnetron sputtering from biphasic targets of hydroxyapatite and tricalcium phosphate, sintered at different mass % ratios. According to Raman scattering and X-ray diffraction data, the deposited hydroxyapatite coatings have a disordered structure. High-temperature treatment of the coatings in air leads to a transformation of the quasi-amorphous structure into a crystalline one. A correlation has been observed between the increase in the Ca content in the coatings and a subsequent decrease in Ca in the biphasic targets after a series of deposition processes. It was proposed that the addition of tricalcium phosphate to the targets would led to a finer coating's surface topography with the average size of 78 nm for the structural elements.