Modification of the structure and composition of Ca10(PO4)6(OH)2 ceramic coatings by changing the deposition conditions in O2 and Ar

18th International Summer School on Vacuum, Electron and Ion Technologies

Donkov, N.^1 ; Zykova, A.^2 ; Safonov, V.^2 ; Kolesnikov, D.^3 ; Goncharov, I.^3 ; Yakovin, S.^4 ; Georgieva, V.^5

Acad. E. Djakov Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsaridradsko Chaussee, 1784 Sofia, Bulgaria^1

Kharkov Institute of Physics and Technology, National Science Centre, Kharkov, Ukraine^2

Belgorod State National Research University, Belgorod, Russia^3

Department of Physical Technologies, Kharkov National University, Kharkov, Ukraine^4

Acad. G. Nadjakov Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tsaridradsko Chaussee, 1784 Sofia, Bulgaria^5

关键词: Bio-functionalities;    Crystalline structure;    Deposition conditions;    Deposition methods;    Hydroxyapatite coating;    Implant surface;    Stoichiometric compositions;    Structural matrix;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/514/1/012017/pdf
DOI  :  10.1088/1742-6596/514/1/012017

来源: IOP

【 摘 要 】

Hydroxyapatite Ca10(PO4)6(OH)2(HAp) is a material considered to be used to form structural matrices in the mineral phase of bone, dentin and enamel. HAp ceramic materials and coatings are widely applied in medicine and dentistry because of their ability to increase the tissue response to the implant surface and promote bone ingrowth and osseoconduction processes. The deposition conditions affect considerably the structure and bio-functionality of the HAp coatings. We focused our research on developing deposition methods allowing a precise control of the structure and stoichiometric composition of HAp thin films. We found that the use of O2as a reactive gas improves the quality of the sputtered hydroxyapatite coatings by resulting in the formation of films of better stoichiometry with a fine crystalline structure.