Next Article in Journal
Development of High-Fidelity Imaging Procedures to Establish the Local Material Behavior in Friction Stir Welded Stainless Steel Joints
Previous Article in Journal
Effects of Different Parameters on Initiation and Propagation of Stress Corrosion Cracks in Pipeline Steels: A Review
Previous Article in Special Issue
Effect of Si Content on the Corrosion Behavior of 420 MPa Weathering Steel
Open AccessArticle

Effect of Temperature on the Corrosion Behavior of Biodegradable AZ31B Magnesium Alloy in Ringer’s Physiological Solution

1
Surface Engineering, Corrosion and Durability Department, Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), 28040 Madrid, Spain
2
Applied Physics Department, Center for Investigation and Advanced Study (CINVESTAV-IPN), Unidad Merida, 97310 Merida, Mexico
*
Author to whom correspondence should be addressed.
Metals 2019, 9(5), 591; https://doi.org/10.3390/met9050591
Received: 22 April 2019 / Revised: 16 May 2019 / Accepted: 21 May 2019 / Published: 22 May 2019
(This article belongs to the Special Issue Surface Chemistry and Corrosion of Light Alloys)
In this work, the corrosion behaviors of the AZ31B alloy in Ringer’s solution at 20 °C and 37 °C were compared over four days to better understand the influence of temperature and immersion time on corrosion rate. The corrosion products on the surfaces of the AZ31B alloys were examined by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). Electrochemical impedance spectroscopy (EIS) provided information about the protective properties of the corrosion layers. A significant acceleration in corrosion rate with increasing temperature was measured using mass loss and evolved hydrogen methods. This temperature effect was directly related to the changes in chemical composition and thickness of the Al-rich corrosion layer formed on the surface of the AZ31B alloy. At 20 °C, the presence of a thick (micrometer scale) Al-rich corrosion layer on the surface reduced the corrosion rate in Ringer’s solution over time. At 37 °C, the incorporation of additional Mg and Al compounds containing Cl into the Al-rich corrosion layer was observed in the early stages of exposure to Ringer’s solution. At 37 °C, a significant decrease in the thickness of this corrosion layer was noted after four days. View Full-Text
Keywords: magnesium alloys; aluminum; Ringer’s solution; hydrogen evolution; corrosion layers; chloride; biomaterials magnesium alloys; aluminum; Ringer’s solution; hydrogen evolution; corrosion layers; chloride; biomaterials
Show Figures

Figure 1

MDPI and ACS Style

Feliu, S., Jr.; Veleva, L.; García-Galvan, F. Effect of Temperature on the Corrosion Behavior of Biodegradable AZ31B Magnesium Alloy in Ringer’s Physiological Solution. Metals 2019, 9, 591.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop