title: In vitro corrosion of pure magnesium and AZ91 alloy-the influence of thin electrolyte layer thickness.
abstract: In vivo degradation predication faces a huge challenge via in vitro corrosion test due to the difficulty for mimicking the complicated microenvironment with various influencing factors. A thin electrolyte layer (TEL) cell for in vitro corrosion of pure magnesium and AZ91 alloy was presented to stimulate the in vivo corrosion in the micro-environment built by the interface of the implant and its neighboring tissue. The results demonstrated that the in vivo corrosion of pure Mg and the AZ91 alloy was suppressed under TEL condition. The AZ91 alloy was more sensitive than pure Mg to the inhibition of corrosion under a TEL thickness of less than 200 µm. The TEL thickness limited the distribution of current, and thus localized corrosion was more preferred to occur under TEL condition than in bulk solution. The TEL cell might be an appropriate approach to simulating the in vivo degradation of magnesium and its alloys.
authors.affiliation: College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.
authors.forename: Rong-Chang
authors.initials: RC
authors.lastname: Zeng
authors.affiliation: College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.
authors.forename: Wei-Chen
authors.initials: WC
authors.lastname: Qi
authors.affiliation: College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.
authors.forename: Fen
authors.initials: F
authors.lastname: Zhang
authors.affiliation: College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China.
authors.forename: Shuo-Qi
authors.initials: SQ
authors.lastname: Li
keywords: biomaterials; corrosion; magnesium; thin electrolyte layer
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