Investigation results of micro-arc wollastoniteecalcium phosphate(W-CaP)biocoatings on the pure titanium(Ti)and Zr-1wt.%Nb(Zr-1Nb)alloy were presented.The voltages of 150-300 V generate the micro-arc oxidation(MAO)pro...Investigation results of micro-arc wollastoniteecalcium phosphate(W-CaP)biocoatings on the pure titanium(Ti)and Zr-1wt.%Nb(Zr-1Nb)alloy were presented.The voltages of 150-300 V generate the micro-arc oxidation(MAO)process with the initial amplitude current of 150-550 A and 100-350 A for Ti and Zr-1Nb substrates,respectively.The identical dependencies of changes of the coating thickness,surface roughness and adhesion strength on the process voltage were revealed for the both substrates.The W-CaP coatings with the thickness of 10-11μm were formed on Ti and Zr-1Nb under the low process voltage of 130-150 V.Elongated wollastonite particles with the size in the range of 40-100μm were observed in such coatings.The structure of the coatings on Ti was presented by the X-ray amorphous and crystalline phases.The X-ray reflexes relating to the crystalline phases of Ti and wollastonite were observed only in XRD patterns of the coatings deposited under 130-200 V on Ti.While,the crystalline structure with phases of CaZr4(PO4)6,β-ZrP2O7,ZrO2,and Zr was detected in the coatings on Zr-1Nb.FT-IRS,XRD,SEM,and TEM data confirmed that the increase of the process voltage to 300 V leads to the dissociation of the wollastonite.No toxic effect of specimens on a viability,morphology and motility of human adipose-derived multipotent mesenchymal stem cells was revealed in vitro.展开更多
基金The work was conducted as part of the program of fundamental researches of the state academies of sciences(PFR SAS)for 2015e2017 No.23.2.5RFBR grant No.15e03e07659 and project No.16-15-10031 of Russian Science Foundation(in part of biological studies in vitro).
文摘Investigation results of micro-arc wollastoniteecalcium phosphate(W-CaP)biocoatings on the pure titanium(Ti)and Zr-1wt.%Nb(Zr-1Nb)alloy were presented.The voltages of 150-300 V generate the micro-arc oxidation(MAO)process with the initial amplitude current of 150-550 A and 100-350 A for Ti and Zr-1Nb substrates,respectively.The identical dependencies of changes of the coating thickness,surface roughness and adhesion strength on the process voltage were revealed for the both substrates.The W-CaP coatings with the thickness of 10-11μm were formed on Ti and Zr-1Nb under the low process voltage of 130-150 V.Elongated wollastonite particles with the size in the range of 40-100μm were observed in such coatings.The structure of the coatings on Ti was presented by the X-ray amorphous and crystalline phases.The X-ray reflexes relating to the crystalline phases of Ti and wollastonite were observed only in XRD patterns of the coatings deposited under 130-200 V on Ti.While,the crystalline structure with phases of CaZr4(PO4)6,β-ZrP2O7,ZrO2,and Zr was detected in the coatings on Zr-1Nb.FT-IRS,XRD,SEM,and TEM data confirmed that the increase of the process voltage to 300 V leads to the dissociation of the wollastonite.No toxic effect of specimens on a viability,morphology and motility of human adipose-derived multipotent mesenchymal stem cells was revealed in vitro.
