Surface modification of an Mg-1Ca alloy to slow down its biocorrosion by chitosan.
The surface morphologies before and after immersion corrosion test of various chitosan-coated Mg-1Ca alloy samples were studied to investigate the effect of chitosan dip coating on the slowdown of biocorrosion. It showed that the corrosion resistance of the Mg-Ca alloy increased after coating with chitosan, and depended on both the chitosan molecular weight and layer numbers of coating. The Mg-Ca alloy coated by chitosan with a molecular weight of 2.7 x 10(5) for six layers has smooth and intact surface morphology, and exhibits the highest corrosion resistance in a simulated body fluid.
Gu
X N
XN
State Key Laboratory for Turbulence and Complex System and College of Engineering, Peking University, Beijing 100871, People's Republic of China. gxn139888@pku.edu.cn
Zheng
Y F
YF
Lan
Q X
QX
Cheng
Y
Y
Zhang
Z X
ZX
Xi
T F
TF
Zhang
D Y
DY
D000497:Alloys / Q000737:chemistry*; D001826:Body Fluids / Q000737:chemistry*; D048271:Chitosan; D003343:Corrosion; D006197:Hair
D000497:Alloys; D048271:Chitosan