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http://dx.doi.org/10.6111/JKCGCT.2022.32.5.183

Bioactivity enhancement of zirconia substrate by surface coating of diopside bioceramics using sol-gel method  

Park, Hyunjung (Department of Advanced Materials and Engineering, Chosun University)
Lee, Jong Kook (Department of Advanced Materials and Engineering, Chosun University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.32, no.5, 2022 , pp. 183-190 More about this Journal
Abstract
Diopside (CaMgSi2O6) is known to have high bioactivity as well as excellent mechanical properties. In this study, we tried to improve the bioactivity of zirconia ceramics by surface coating of diopside and its bioactivity was investigated through an in vitro test. Surface coating on zirconia substrate was prepared by sol-gel method using a diopside sol which was prepared by dissolving Ca(NO3)2·4H2O, MgCl2·6H2O and Si(OC2H5)4 in ethanol with a fixed molar ratio and then hydrolysis. To examine the bioactivity of diopside coating, we examined the surface dissolution and the precipitation of new hydroxyapatite particles through in vitro test in SBF (Simulated Body Fluid) solution. Dense and thick diopside coating layers could be fabricated on zirconia substrate by sol-gel method. Also, we confirmed that they contained high bioactivity from the in vitro test, indicated the precipitation of hydroxyapatite particles after the 14 days immersion in SBF solution. In addition, we checked that the bioactivity of diopside coated layers was dependent on the repeated coating cycle and coating thickness.
Keywords
Bioactive; Diopside; Sol-gel coating; Apatite precipitation;
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Times Cited By KSCI : 1  (Citation Analysis)
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