Effect of cations (Mg2+, Zn2+, Cd2+) on formation of the mineral phase in Ca(NO3)2-Mg(NO3)2-Na2HPO4-H2O system

International Scientific Conference on "Radiation-Thermal Effects and Processes in Inorganic Materials"

材料科学;物理学

Golovanova, O.A.^1 ; Shlyapov, R.M.^2 ; Amerkhanova, Sh.K.^2 ; Uali, A.S.^2 ; Vlasov, V.A.^3

Omsk State University, Omsk, Russia^1

Karaganda State University, Karaganda, Kazakhstan^2

National Research Tomsk Polytechnic University, Tomsk, Russia^3

关键词: Ca/P ratio;    Cadmium ions;    Crystallinities;    Mineral phase;    Structural defect;    Zinc ions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/81/1/012065/pdf
DOI  :  10.1088/1757-899X/81/1/012065

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Synthesis of hydroxyapatite in the system Ca(NO3)2-Me(NO3)2-NaHPO4-H2O with pH in the range of 6-12.2 is performed, and hydroxyapatite of B-type is formed. The effect of magnesium, zinc and cadmium ions on the properties of hydroxyapatite is studied. It is shown that as the concentration of these ions increases, the crystallinity of hydroxyapatite and the Ca/P ratio decreases. It is found that in all the experiments Zn2+cations affect the hydroxyapatite structure to a lesser extent which results in less structural defects, wherein the Ca/P ratio attains the highest values. It is shown that the solubility of the samples containing zinc ions is greater than that of the samples with other additives.