Ultrathin hydroxyapatite coating on pure magnesium substrate prepared by pulsed electron ablation technique

Abstract

Magnesium (Mg) as a potential material for biodegradable implants is attractive due to its mechanical similarity to the bone tissue and nontoxic corrosion products. However, the rapid corrosion rate of bare magnesium is associated with hydrogen release, which may complicate the healing process. The corrosion rate may be reduced by suitable alloying, but concurrently the biocompatibility of such alloy might be deteriorated. Another way of reduction of the corrosion rate is coating. Hydroxyapatite (HA)-based coating is considered to improve biocompatibility as well as decrease the corrosion rate by the barrier effect. In this study, ultrathin (150 nm) HA and HA containing Sr coatings are deposited via pulsed electron ablation technique on pure Mg.

Determination of the Spatial Anisotropy of the Surface MicroStructures of Different Implant Materials: An Atomic Force Microscopy Study

“…Additionally, coating of implants for purposes of improved bioactivity, osseointegration or antibacterial properties may alter the original microstructure of textured surfaces and then affect directional properties of the surface, especially at the micrometer scales [20][21][22].…”

Fabrication and properties of the superhydrophobic ceria‐based composite coating on magnesium alloy

“…[1,2] However, they are susceptible to corrosion in seawater or humid atmosphere with organic/inorganic acids, which limits the large-scale application of magnesium and its alloys. [3,4] The application of high-quality surface barrier layers can effectively improve the corrosion resistance of magnesium alloys, such as protective layers obtained by chemical conversion treatment, micro-arc oxidation treatment, electroplating, and electroless plating. [5][6][7] Chemical conversion treatment has been widely developed due to the concise preparation process.…”