Corrosion fatigue behaviors of two biomedical Mg alloys – AZ91D and WE43 – In simulated body fluid

Gu, Xuenan; Wei-ping, Zhou; Zheng, Yufeng; Cheng, Yan; Wei, Shicheng; Zhong, Shengping; Xi, Tao; Chen, L.J.

doi:10.1016/j.actbio.2010.07.026

Cited by 302 publications

(169 citation statements)

References 48 publications

Supporting

Mentioning

152

Contrasting

Unclassified

Order By: Relevance

“…Gu et al, showed the increase in corrosion rate of as-extruded WE43 alloy and as-cast AZ91D under compression and cyclic loads [41]. The corrosion of these two alloys increased more than 10 times under applied loads when compared to unstressed equivalents [42].…”

Section: Mechanical Stressmentioning

confidence: 99%

Biodegradable magnesium alloys for orthopaedic applications: A review on corrosion, biocompatibility and surface modifications

Agarwal

Curtin²,

Duffy

et al. 2016

Materials Science and Engineering: C

746

363

View full text Add to dashboard Cite

Magnesium (Mg) and its alloys have been extensively explored as potential biodegradable implant materials for orthopaedic applications (e.g. Fracture fixation). However, the rapid corrosion of Mg based alloys in physiological conditions has delayed their introduction for therapeutic applications to date. The present review focuses on corrosion, biocompatibility and surface modifications of biodegradable Mg alloys for orthopaedic applications. Initially, the corrosion behaviour of Mg alloys and the effect of alloying elements on corrosion and biocompatibility is discussed. Furthermore, the influence of polymeric deposit coatings, namely sol-gel, synthetic aliphatic polyesters and natural polymers on corrosion and biological performance of Mg and its alloy for orthopaedic applications are presented. It was found that inclusion of alloying elements such as Al, Mn, Ca, Zn and rare earth elements provides improved corrosion resistance to Mg alloys. It has been also observed that sol-gel and synthetic aliphatic polyesters based coatings exhibit improved corrosion resistance as compared to natural polymers, which has higher biocompatibility due to their biomimetic nature. It is concluded that, surface modification is a promising approach to improve the performance of Mg-based biomaterials for orthopaedic applications.

show abstract

Section: Mechanical Stressmentioning

confidence: 99%

Biodegradable magnesium alloys for orthopaedic applications: A review on corrosion, biocompatibility and surface modifications

Agarwal

Curtin²,

Duffy

et al. 2016

Materials Science and Engineering: C

746

363

View full text Add to dashboard Cite

show abstract

“…Available studies, which are related to structural materials, are largely irrelevant for bio-medical applications, because, as has been mentioned above, the most popular engineering alloys included in many reports generally contain Al that is believed to be toxic to human. The detrimental effect of chlorine-containing solutions of fatigue performance of Mg alloys can be illustrated from the results by Gu et al [13] who carried out corrosion fatigue studies on AZ91 and WE43 alloys in a simulated body fluid (SBF). These authors demonstrated that the conventional fatigue limit at 10 7 cycles in the die-cast AZ91D reduced from of 50 MPa in air to 20 MPa at 10 6 cycles tested in SBF at 37 • C. The higher strength alloy WE43 demonstrated the fatigue limit of 110 MPa at 10 7 cycles in the air, which dropped to 40 MPa in SBF at the same number of cycles.…”

Section: Introductionmentioning

confidence: 97%

Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys

Linderov

Васильев

Мерсон

et al. 2017

Metals

View full text Add to dashboard Cite

Corrosion fatigue data for magnesium alloys are still scarce. The present communication reports the results of microstructural investigations and fatigue testing of the fine grain Mg-Zn-Zr (ZK60) alloy after multiaxial isothermal forging and of the hot extruded Mg-Y-Zn (WZ21) alloy in air and in the 0.9% NaCl water solution. Both of the alloys demonstrate a very good high-cycle fatigue performance in air. However, the significant drop of fatigue resistance is observed in the corrosive environment. Results are discussed from perspectives of potential applications and future studies.

show abstract

“…The density of the corrosion current i corr can be estimated from the analysis of the linear curve (Tafel) and can also be determined from the polarization resistance obtained from the impedance measurements using the Stern-Geary equation [16]. The corrosion rate can be calculated with Equation (12):…”

Section: Surface Electrochemical Characterizationmentioning

confidence: 99%

Electrochemical Behavior of Biodegradable FeMnSi–MgCa Alloy

Cimpoeşu

Săndulache

Istrate

et al. 2018

Metals

View full text Add to dashboard Cite

Nowadays, alongside metallic biomaterials, there is increasing interest in using degradable metals in an appreciable number of medical applications. There are new kinds of metallic biomaterials for medical applications and many new findings have been reported over the past few years. Iron-based materials are a solution for biodegradable applications based on their mechanical and chemical properties. In order to control the corrosion rate of the Fe10Mn6Si alloy, we proposed the use of two additional elements, Ca and Mg, as corrosion promoters. The new material was obtained in an air-controlled atmosphere furnace after five melting operations. The material was in vitro analyzed from a corrosion resistance point of view. The experiments were realized by immersion (7, 14, and 30 days) in simulated body fluid (SBF) solution at 37 • C and a constant pH, and by electrochemical tests (electrochemical impedance spectroscopy (EIS), linear polarization (LP), cyclic polarization (CP)). Material surfaces before and after corrosion tests were analyzed through scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) techniques. A discussion on the degradation rate of the material was realized from a comparison of the results. The results presented good composition homogeneity after the re-melting stages, with low percentages of Ca and Mg in the material, but with an adequate spread in the alloy.

show abstract

Corrosion fatigue behaviors of two biomedical Mg alloys – AZ91D and WE43 – In simulated body fluid

Cited by 302 publications

References 48 publications

Biodegradable magnesium alloys for orthopaedic applications: A review on corrosion, biocompatibility and surface modifications

Biodegradable magnesium alloys for orthopaedic applications: A review on corrosion, biocompatibility and surface modifications

Corrosion Fatigue of Fine Grain Mg-Zn-Zr and Mg-Y-Zn Alloys

Electrochemical Behavior of Biodegradable FeMnSi–MgCa Alloy

Contact Info

Product

Resources

About