Preliminary Corrosion Evaluation of Some Novel Bulk Electron Beam Evaporated Magnesium Alloys

Dodd, S. B.; Morris, Samuel A.; Gardiner, R.W.; Brydson, Rik; Diplas, Spyridon; Tsakiropoulos, P.

doi:10.1515/corrrev.1998.16.1-2.159

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…The surface coating containing binary alloy was successfully deposited using the PVD process and was able to enhance the corrosion resistance of various Mg alloys. [174][175][176] During chemical vapor deposition, a chemical reaction takes place on the sample surface and the vapor phase of the coating material to form a chemically modified coating. The deposition of diamond like carbon films on Mg surface was carried out using the CVD process in order to improve the surface properties of the implants.…”

Section: Physical Vapor Deposition (Pvd) and Chemical Vapor Deposition (Cvd)mentioning

confidence: 99%

“…Physical vapor deposition (PVD) and chemical vapor deposition (CVD) are most commonly used techniques for depositing thin layers on the Mg surface. The surface coating containing binary alloy was successfully deposited using the PVD process and was able to enhance the corrosion resistance of various Mg alloys 174‐176 . During chemical vapor deposition, a chemical reaction takes place on the sample surface and the vapor phase of the coating material to form a chemically modified coating.…”

Section: Approaches To Improve Different Properties Of Mg Alloysmentioning

confidence: 99%

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In vitro and in vivo degradation assessment and preventive measures of biodegradable Mg alloys for biomedical applications

Jana

Das

Balla

2021

J Biomedical Materials Res

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Magnesium (Mg) and its alloys have been widely explored as a potential biodegradable implant material. However, the fast degradation of Mg‐based alloys under physiological environment has hindered their widespread use for implant applications till date. The present review focuses on in vitro and in vivo degradation of biodegradable Mg alloys, and preventive measures for biomedical applications. Initially, the corrosion assessment approaches to predict the degradation behavior of Mg alloys are discussed along with the measures to control rapid corrosion. Furthermore, this review attempts to explore the correlation between in vitro and in vivo corrosion behavior of different Mg alloys. It was found that the corrosion depends on experimental conditions, materials and the results of different assessment procedures hardly matches with each other. It has been demonstrated the corrosion rate of magnesium can be tailored by alloying elements, surface treatments and heat treatments. Various researches also studied different biocompatible coatings such as dicalcium phosphate dihydrate (DCPD), β‐tricalcium phosphate (β‐TCP), hydroxyapatite (HA), polycaprolactone (PCL), polylactic acid (PLA), and so on, on Mg alloys to suppress rapid degradation and examine their influence on new bone regeneration as well. This review shows the need for a standard method of corrosion assessment to predict the in vivo corrosion rate based on in vitro data, and thus reducing the in vivo experimentation.

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Section: Physical Vapor Deposition (Pvd) and Chemical Vapor Deposition (Cvd)mentioning

confidence: 99%

Section: Approaches To Improve Different Properties Of Mg Alloysmentioning

confidence: 99%

In vitro and in vivo degradation assessment and preventive measures of biodegradable Mg alloys for biomedical applications

Jana

Das

Balla

2021

J Biomedical Materials Res

View full text Add to dashboard Cite

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“…The PVD process has successfully deposited binary alloys such as Mg-Ti, Mg-Zr and Mg-Mn along with other less biocompatible and to xic alloys. The subsequent corrosion studies have revealed that the binary-alloyed surface coating were capable of increasing the corrosion resistance of the various Mg alloys [151][152][153]. The chemical vapour deposition process has also been used to produce a variety of coating processes that can create a protective coating or modify the existing Mg alloy surface.…”

Section: Physical Vapour Deposition (Pvd) and Chemicalmentioning

confidence: 99%

Biomedical Magnesium Alloys: A Review of Material Properties, Surface Modifications and Potential as a Biodegradable Orthopaedic Implant

Poinern¹,

Brundavanam²,

Fawcett³

2013

AJBE

283

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Magnesium and magnesium based alloys are lightweight metallic materials that are extremely biocompatib le and have similar mechanical properties to natural bone. These materials have the potential to function as an osteoconductive and biodegradable substitute in load bearing applicat ions in the field of hard t issue engineering. However, the effects of corrosion and degradation in the physiological environ ment of the body has prevented their wide spread applicat ion to date. The aim o f this review is to examine the properties, chemical stability, degradation in situ and methods of improving the corrosion resistance of magnesium and its alloys for potential application in the orthopaedic field. To be an effective imp lant, the surface and sub-surface properties of the material needs to be carefully selected so that the degradation kinetics of the implant can be efficiently controlled. Several surface modification techniques are presented and their effectiveness in reducing the corrosion rate and methods of controlling the degradation period are discussed. Ideally, balancing the gradual loss of material and mechanical strength during degradation, with the increasing strength and stability of the newly forming bone tissue is the ultimate goal. If this goal can be achieved, then orthopaedic implants manufactured fro m magnesium based alloys have the potential to deliver successful clinical outcomes without the need for revision surgery.

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Metals for bone implants: safety, design, and efficacy

et al. 2016

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Like most bone deficits, mandibular segmental defects may result from surgical reconstruction due to congenital deformity, tumor resection, other pathologies, senescence, trauma, or infection. The goals of mandibular reconstruction are to restore the mandible's function and normal appearance. Clinical methods to restore the mandible typically rely on bone replacement using some combination of bone tissue transfer and metal implants. This paper reviews the safety, design, and efficacy of metal implants in general and specifically for the repair of mandibular segmental defects. These problems include implant incorporation, implant failure mechanisms (e.g., stress concentration, stress shielding), corrosion and toxicity, infection, and muscle re-attachment. Finally, this paper presents the use of porous nickel-titanium (NiTi) implants for the repair of skeletal defects through the example of mandibular segmental defects. Resorbable magnesium, and porous and non-porous NiTi, immobilization hardware are also discussed. These materials provide new options which may better match the material properties, and if they can be 3D printed, better match the shape of surrounding host tissue. These advances might reduce engrafted bone and metal implant failure and restore musculoskeletal function for the long term. Patient-specific hardware and grafting strategies might prove to be useful tools in determining both the patient's appearance and functional outcome following reconstructive musculoskeletal surgery.

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Preliminary Corrosion Evaluation of Some Novel Bulk Electron Beam Evaporated Magnesium Alloys

Cited by 7 publications

References 2 publications

In vitro and in vivo degradation assessment and preventive measures of biodegradable Mg alloys for biomedical applications

In vitro and in vivo degradation assessment and preventive measures of biodegradable Mg alloys for biomedical applications

Biomedical Magnesium Alloys: A Review of Material Properties, Surface Modifications and Potential as a Biodegradable Orthopaedic Implant

Metals for bone implants: safety, design, and efficacy

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