Study of the Anti-corrosion and Anti-fretting Properties of Surfi cial Treated magnesium Alloy Bone Plate

VernacularTitle:表面处理镁合金接骨板耐蚀性和微动磨损性能研究
Author: Jun ZHOU ¹ ; Menglin ZHOU ; Jing ZHENG ; Tao HE
Author Information

1. 浙江省医疗器械检验院
Keywords: metalic bone plate; magnesium aloy; micro-arcoxidation; hydroxyapatite; fretting
From: Chinese Journal of Medical Instrumentation 2016;40(5):347-350
CountryChina
Language:Chinese
Abstract: The weakening of mechanical properties caused by rapid degradation has been an impediment to the clinical application of magnesium aloy for a long time. In this paper, the effect of surface treatment on the anti-corrosion and anti-fretting properties of magnesium aloy ZK60 was studied. Firstly, an oxidizing layer whose outer layer was porous was first made on the surface of magnesium aloy through micro-arc oxidation treatment (MAO). Then ahydroxyapatitecoating was fabricated by electrodeposition on the oxidizing layer to seal the porous layer. The corrosion resistance and fretting performance of them were investigated in vitro under a simulated bone-plate service condition. Polarization testing results showed that both of them can signifi cantly enhanced the corrosion resistance of magnesium aloy and the corrosion resistance of the latter was better. The fretting testing results showed that obvious coatingfl aking occurred on the worn surface of the latter, and its anti-fretting properties are inferior to that of the former.