Comparison of electrochemical behavior of hydroxyapatite coated onto WE43 Mg alloy by electrophoretic and pulsed laser deposition

Sankar, M.; Suwas, Satyam; Subramanian, B.; Manivasagam, Geetha

doi:10.1016/j.surfcoat.2016.10.077

Cited by 36 publications

(13 citation statements)

References 35 publications

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“…Various efforts focused on synthesizing the composite coatings on Mg based bioimplant alloys with bioceramics such as hydroxyapatite [30,63], bioglass [39], and silica based composites [70]. Laser patterned hydroxyapatite coatings were synthesized onto AZ31B Mg bioimplant alloy with an intention of controlling the bio-degradation behavior of the material.…”

Section: Beam Driven Processing Of Coatingsmentioning

confidence: 99%

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Joshi

Dahotre

2022

Biomedical Materials & Devices

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Magnesium based alloys are attractive materials for biomedical applications as a result of their similar properties to the human bone and vital nature of the Mg ions during various functions of the human body. However, these materials suffer from poor corrosion resistance in chloride containing physiological environments. As a result, surface modification of biomedical alloys is needed to not only enhance the corrosion resistance but also biointegration characteristics. The current review article mainly focuses on beam and friction stir based techniques for surface processing of biomedical Mg alloys and composites. Each technique is further divided into sub-methods. Under the beam based processing, surface melting and bioceramic coating synthesis are discussed in detail. In the case of friction based methods, friction stir processing for grain refinement and techniques of surface modification to produce surface bioceramic composites are discussed. Furthermore, latest developments in the area of beam as well as friction stir additive manufacturing of biomedical Mg alloys and composites are elucidated. Lastly, possible directions for future progress and scaling up the lab level developments to actual applications in these materials processing areas for biomedical Mg alloys are provided.

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Section: Beam Driven Processing Of Coatingsmentioning

confidence: 99%

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Joshi

Dahotre

2022

Biomedical Materials & Devices

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“…Moreover, mechanical properties of the metal such as hardness, elastic modulus, and fracture toughness increase as compared to bare Mg alloy substrate. A nanostructured HA coating on Mg-3Zn alloy prepared by electrophoretic deposition process shows significantly enhanced cell viability and adhesion strength (Sankar et al, 2017). A nanostructured HA coating fabricated on Mg substrate using dip coating method followed by a chemical treatment, on the other hand, gives adequate resistance to the additional release of Mg 2+ thus, improves corrosion resistance and biomineralization through stabilizing the alkalization characteristics (Rojaee et al, 2013).…”

Section: Ceramic Coating On Mg Alloysmentioning

confidence: 99%

Magnesium Alloys With Tunable Interfaces as Bone Implant Materials

Rahman

Dutta

Choudhury

2020

Front. Bioeng. Biotechnol.

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Magnesium (Mg) based biodegradable materials are a new generation orthopedic implant materials that are intended to possess same mechanical properties as that of bone. Mg alloys are considered as promising substitutes to permanent implants due to their biodegradability in the physiological environment. However, rapid corrosion rate is one of the major constraints of using Mg alloys in clinical applications in spite of their excellent biocompatibility. Approaches to overcome the limitations include the selection of adequate alloying elements, proper surface treatment, surface modification with coating to control the degradation rate. This review focuses on current advances on surface engineering of Mg based biomaterials for biomedical applications. The review begins with a description of corrosion mechanism of Mg alloy, the requirement for appropriate surface functionalization/coatings, their structure-property-performance relationship, and suitability for biomedical applications. The control of physico-chemical properties such as wettability, surface morphology, surface chemistry, and surface functional groups of the coating tailored by various approaches forms the pivotal part of the review. Chemical surface treatment offers initial protection from corrosion and inorganic coating like hydroxyapatite (HA) improves the biocompatibility of the substrate. Considering the demand of ideal implant materials, multilayer hybrid coatings on Mg alloy in combination with chemical pretreatment or inorganic HA coating, and protein-based polymer coating could be a promising technique to improve corrosion resistance and promote biocompatibility of Mg-based alloys.

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“…Due to electrochemical facts, the sharp edges, such as micro-cracks, are more prone to ion exchange, and as a result, they undergo a higher rate of material deposition. This characteristic guarantees the highest value of homogeneity and integrity in the coating layers [107].…”

Section: Bioactive Materials Deposition Techniquesmentioning

confidence: 99%

Coating Techniques for Functional Enhancement of Metal Implants for Bone Replacement: A Review

2019

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To facilitate patient healing in injuries and bone fractures, metallic implants have been in use for a long time. As metallic biomaterials have offered desirable mechanical strength higher than the stiffness of human bone, they have maintained their place. However, in many case studies, it has been observed that these metallic biomaterials undergo a series of corrosion reactions in human body fluid. The products of these reactions are released metallic ions, which are toxic in high dosages. On the other hand, as these metallic implants have different material structures and compositions than that of human bone, the process of healing takes a longer time and bone/implant interface forms slower. To resolve this issue, researchers have proposed depositing coatings, such as hydroxyapatite (HA), polycaprolactone (PCL), metallic oxides (e.g., TiO2, Al2O3), etc., on implant substrates in order to enhance bone/implant interaction while covering the substrate from corrosion. Due to many useful HA characteristics, the outcome of various studies has proved that after coating with HA, the implants enjoy enhanced corrosion resistance and less metallic ion release while the bone ingrowth has been increased. As a result, a significant reduction in patient healing time with less loss of mechanical strength of implants has been achieved. Some of the most reliable coating processes for biomaterials, to date, capable of depositing HA on implant substrate are known as sol-gel, high-velocity oxy-fuel-based deposition, plasma spraying, and electrochemical coatings. In this article, all these coating methods are categorized and investigated, and a comparative study of these techniques is presented.

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Comparison of electrochemical behavior of hydroxyapatite coated onto WE43 Mg alloy by electrophoretic and pulsed laser deposition

Cited by 36 publications

References 35 publications

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Tailored Surfaces on Biomedical Magnesium Alloys via Novel Beam and Friction Based Manufacturing Processes: A Review

Magnesium Alloys With Tunable Interfaces as Bone Implant Materials

Coating Techniques for Functional Enhancement of Metal Implants for Bone Replacement: A Review

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