Effect of coating time on the formation of coating layer and degradation behavior of hydroxyapatite coated ZK60 alloy.

Objectives: This study aims to investigate the effect of coating time on the formation of hydroxyapatite (HA) coating layer on ZK60 substrate and understand the biodegradation behavior of the coated alloy for biodegradable implant applications.

Methods: Biodegradable ZK60 alloy was coated by HA layer for different times of 0.5, 1, 2, and 4 h by chemical conversion method.

In vitro biodegradation behavior of biodegradable hydroxyapatite coated AZ31 alloy treated at various pH values.

Objectives: The aim of this study is to evaluate the effect of pH treatment on the formation of hydroxyapatite (HA) coating layer and the biodegradation rate of hydroxyapatite coated AZ31 alloy for applications in biodegradable implants.

Methods: HA was grown on the surface of AZ31 substrate at three different pH solutions of 7.5, 9.