Initial formation of corrosion products on pure zinc in simulated body fluid
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2018年第12期
论文作者：Lijun Liu Yao Meng Chaofang Dong Yu Yan Alex A.Volinsky Lu-Ning Wang
文章页码：2271 - 2282
摘 要：Zinc was recently suggested to be a potential candidate material for degradable coronary artery stent.The corrosion behavior of pure zinc exposed to r-SBF up to 336 h was investigated by electrochemical measurements and immersion tests. The morphology and chemical composites of the corrosion products were investigated by scanning electron microscope, grazing-incidence X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectrometer. The results demonstrate that the initial corrosion products on the pure zinc mainly consist of zinc oxide/hydroxide and zinc/calcium phosphate compounds. The pure Zn encounters uniform corrosion with an estimated corrosion rate of 0.02-0.07 mmy-1 during the immersion, which suggests the suitability of pure Zn for biomedical applications.
Lijun Liu1，Yao Meng1，Chaofang Dong1,2，Yu Yan2，Alex A.Volinsky3，Lu-Ning Wang1
1. State Key Laboratory for Advanced Metals and Materials,School of Materials Science and Engineering,University of Science and Technology Beijing2. Institute for Advanced Materials and Technology,University of Science and Technology Beijing3. Department of Mechanical Engineering,University of South Florida
摘 要：Zinc was recently suggested to be a potential candidate material for degradable coronary artery stent.The corrosion behavior of pure zinc exposed to r-SBF up to 336 h was investigated by electrochemical measurements and immersion tests. The morphology and chemical composites of the corrosion products were investigated by scanning electron microscope, grazing-incidence X-ray diffraction, X-ray photoelectron spectroscopy and Fourier transform infrared spectrometer. The results demonstrate that the initial corrosion products on the pure zinc mainly consist of zinc oxide/hydroxide and zinc/calcium phosphate compounds. The pure Zn encounters uniform corrosion with an estimated corrosion rate of 0.02-0.07 mmy-1 during the immersion, which suggests the suitability of pure Zn for biomedical applications.
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