科研之友
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摘要
In order to improve the biodegradation properties of the magnesium alloy, a bioactive hydroxyapatite (HA) coating was deposited on AZ60 magnesium alloy by a two-step chemical method, i.e., dicalcium phosphate dihydrate (DCPD) coating was formed through a phosphating process, and then transformed to hydroxyapatite coating via alkali-heat treatment. SEM micrographs show that the HA coating is compact with the thickness of about 6 mu m. Electrochemical tests were used to examine the corrosion performance in NaCl solution and simulated body fluid (SBF) and the results reveal that the HA coating significantly retards the corrosion rate of AZ60 alloy in both solutions.
- 出版日期2012-11
- 单位吉林大学
