Corrosion behavior in SBF for titania coatings on Mg–Ca alloy

Li, Meiheng; Chen, Qian; Zhang, Wenjin; Hu, Wangyu; Su, Yong Yao

doi:10.1007/s10853-010-5083-2

Cited by 35 publications

(12 citation statements)

References 19 publications

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“…Moreover, coated samples produced much lower hydrogen initially but hydrogen evolution rate increased rapidly once pits happened in coatings. Li et al [ 45 ] investigated the corrosion behavior of TiO 2 coated Mg-Ca1.0 alloy in SBF. Uncoated Mg-Ca1.0 corroded considerably after 48 h immersion in SBF, however, the coated alloy remained almost intact after 168 h immersion except than a few break down sites.…”

Section: Ca Alloying and Surface Treatment Processesmentioning

confidence: 99%

Biodegradable Orthopedic Magnesium-Calcium (MgCa) Alloys, Processing, and Corrosion Performance

2012

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Magnesium-Calcium (Mg-Ca) alloy has received considerable attention as an emerging biodegradable implant material in orthopedic fixation applications. The biodegradable Mg-Ca alloys avoid stress shielding and secondary surgery inherent with permanent metallic implant materials. They also provide sufficient mechanical strength in load carrying applications as opposed to biopolymers. However, the key issue facing a biodegradable Mg-Ca implant is the fast corrosion in the human body environment. The ability to adjust degradation rate of Mg-Ca alloys is critical for the successful development of biodegradable orthopedic implants. This paper focuses on the functions and requirements of bone implants and critical issues of current implant biomaterials. Microstructures and mechanical properties of Mg-Ca alloys, and the unique properties of novel magnesium-calcium implant materials have been reviewed. Various manufacturing techniques to process Mg-Ca based alloys have been analyzed regarding their impacts on implant performance. Corrosion performance of Mg-Ca alloys processed by different manufacturing techniques was compared. In addition, the societal and economical impacts of developing biodegradable orthopedic implants have been emphasized.

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Section: Ca Alloying and Surface Treatment Processesmentioning

confidence: 99%

Biodegradable Orthopedic Magnesium-Calcium (MgCa) Alloys, Processing, and Corrosion Performance

2012

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“…A coating made of nanoparticles of TiO 2 was applied to a Mg–Ca alloy to increase the corrosion resistance. Li et al [ 58 ] and White et al [ 59 ] studied the effect of TiO 2 coating on the corrosion performance. For example, Li et al [ 58 ] reported that a TiO 2 coated Mg–Ca alloy showed delayed corrosion as compared to the uncoated alloy surface.…”

Section: Surface Treatments For the Control Of Corrosion Ratementioning

confidence: 99%

“…Li et al [ 58 ] and White et al [ 59 ] studied the effect of TiO 2 coating on the corrosion performance. For example, Li et al [ 58 ] reported that a TiO 2 coated Mg–Ca alloy showed delayed corrosion as compared to the uncoated alloy surface. Further, the coated alloy exhibited three times lower corrosion current density than the uncoated counterpart.…”

Section: Surface Treatments For the Control Of Corrosion Ratementioning

confidence: 99%

Surface treatments for controlling corrosion rate of biodegradable Mg and Mg-based alloy implants

Uddin

Hall

Murphy

2015

Science and Technology of Advanced Materials

145

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Due to their excellent biodegradability characteristics, Mg and Mg-based alloys have become an emerging material in biomedical implants, notably for repair of bone as well as coronary arterial stents. However, the main problem with Mg-based alloys is their rapid corrosion in aggressive environments such as human bodily fluids. Previously, many approaches such as control of alloying materials, composition and surface treatments, have been attempted to regulate the corrosion rate. This article presents a comprehensive review of recent research focusing on surface treatment techniques utilised to control the corrosion rate and surface integrity of Mg-based alloys in both in vitro and in vivo environments. Surface treatments generally involve the controlled deposition of thin film coatings using various coating processes, and mechanical surfacing such as machining, deep rolling or low plasticity burnishing. The aim is to either make a protective thin layer of a material or to change the micro-structure and mechanical properties at the surface and sub-surface levels, which will prevent rapid corrosion and thus delay the degradation of the alloys. We have organised the review of past works on coatings by categorising the coatings into two classes—conversion and deposition coatings—while works on mechanical treatments are reviewed based on the tool-based processes which affect the sub-surface microstructure and mechanical properties of the material. Various types of coatings and their processing techniques under two classes of coating and mechanical treatment approaches have been analysed and discussed to investigate their impact on the corrosion performance, biomechanical integrity, biocompatibility and cell viability. Potential challenges and future directions in designing and developing the improved biodegradable Mg/Mg-based alloy implants were addressed and discussed. The literature reveals that no solutions are yet complete and hence new and innovative approaches are required to leverage the benefit of Mg-based alloys. Hybrid treatments combining innovative biomimetic coating and mechanical processing would be regarded as a potentially promising way to tackle the corrosion problem. Synergetic cutting-burnishing integrated with cryogenic cooling may be another encouraging approach in this regard. More studies focusing on rigorous testing, evaluation and characterisation are needed to assess the efficacy of the methods.

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“…A strategy to solve the rapid corrosion of magnesium is the application of surface treatments. 2,14,30–49 One of the most studied surface treatments in the literature to improve the corrosion resistance of magnesium is the fluoride treatment. 30–34,50 Fluoride treatment is a chemical conversion that consists of immersion of magnesium in hydrofluoric acid (HF) to form a coating of MgF 2 .…”

Section: Introductionmentioning

confidence: 99%

Effectivity of fluoride treatment on hydrogen and corrosion product generation in temporal implants for different magnesium alloys

Trinidad

Arruebarrena

Marco

et al. 2013

Proc Inst Mech Eng H

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The increasing interest on magnesium alloys relies on their biocompatibility, bioabsorbility and especially on their mechanical properties. Due to these characteristics, magnesium alloys are becoming a promising solution to be used, as temporary implants. However, magnesium alloys must overcome their poor corrosion resistance. This article analyses the corrosion behaviour in phosphate-buffered saline solution of three commercial magnesium alloys (AZ31B, WE43 and ZM21) as well as the influence of fluoride treatment on their corrosion behaviour. It is shown that the corrosion rate of all the alloys is decreased by fluoride treatment. However, fluoride treatment affects each alloy differently.

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Corrosion behavior in SBF for titania coatings on Mg–Ca alloy

Cited by 35 publications

References 19 publications

Biodegradable Orthopedic Magnesium-Calcium (MgCa) Alloys, Processing, and Corrosion Performance

Biodegradable Orthopedic Magnesium-Calcium (MgCa) Alloys, Processing, and Corrosion Performance

Surface treatments for controlling corrosion rate of biodegradable Mg and Mg-based alloy implants

Effectivity of fluoride treatment on hydrogen and corrosion product generation in temporal implants for different magnesium alloys

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