TAILIEUCHUNG - Preparation and characterization of magnesium hydroxyapatite coatings on 316L stainless steel
The influences of scanning potential ranges, scanning times to deposit MgHAp coatings were researched. The analytical results FTIR, SEM, X-ray, EDX, thickness and adhension strength showed that MgHAp coatings were single phase of HAp, fibrous shapes, thickness µm and adhesion strength MPa at the scanning potential ranges of 0÷ V/SCE and scanning times of 5 scans. | Vietnam Journal of Chemistry, International Edition, 55(5): 657-662, 2017 DOI: Preparation and characterization of magnesium hydroxyapatite coatings on 316L stainless steel Vo Thi Hanh1,2*, Pham Thi Nam3, Nguyen Thu Phuong3, Nguyen Thi Thom3, Le Thi Phuong Thao2, Dinh Thi Mai Thanh1,4 1 Graduate University of Science and Technology, Vietnam Academy of Science and Technology 2 Department of Chemistry, Basic Science Faculty, Hanoi University of Mining and Geology 3 4 Institute for Tropical Technology, Vietnam Academy of Science and Technology University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology Received 9 March 2017; Accepted for publication 20 October 2017 Abstract Magnesium hydroxyapatite coatings (MgHAp) were deposited on the surface of 316L stainless steel (316L SS) substrates by electrodeposition technique. Different concentrations of Mg2+ ion were incorporated into the apatite structure by adding Mg(NO3)2 into electrolyte solution containing 3×10-2 M Ca(NO3)2, ×10-2 M NH4H2PO4 and 6×10-2 M NaNO3. With Mg2+ concentration 1×10-3 M, the obtained coatings have wt% Mg2+. The influences of scanning potential ranges, scanning times to deposit MgHAp coatings were researched. The analytical results FTIR, SEM, X-ray, EDX, thickness and adhension strength showed that MgHAp coatings were single phase of HAp, fibrous shapes, thickness µm and adhesion strength MPa at the scanning potential ranges of 0÷ V/SCE and scanning times of 5 scans. Keywords. 316L SS, Electrodeposition, MgHAp. 1. INTRODUCTION Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) is a main component in the mineral phase of natural bone, teeth and hard tissue. HAp is widely used in medical fields because it has high biocompatibility and chemical composition as the natural bone. HAp coating is covered on implant materials such as 316L stainless steel, titanium metal,. to improve the quality and biocompatibility. HAp could .
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