Progress in Preparation and Properties of Layered Double Hydroxides on Biodegradable Mg Alloys
Mg alloys appear to be promising candidates as one of the ideal materials for biodegradable implantable devices due to low density,high specific strength,biodegradability and good biocompatibility. However,the in vivo degradation rate of Mg alloys is too fast,which limits the clinical application of biodegradable Mg alloys. Coating modification is an ef-fective method to slow down the degradation of Mg alloys. Layered double hydroxides (LDHs) has acid-base dual proper-ties,ion exchange properties and good corrosion resistance,which can effectively improve the corrosion resistance of Mg al-loys. In addition,the LDHs coating can be endowed with different biological functions by designing the metal ions of the LDHs coating. This paper introduces the preparation method of LDHs coating on Mg alloy surface,discusses and compares the influence of different LDHs coating on corrosion resistance and biocompatibility of Mg alloy,and provides reference for the development of biodegradable LDHs coating on medical Mg alloys surface.
NETL
NSTL
万方数据
