Selenium conversion coating on AZ31 Mg alloy: A solution for improved corrosion rate and enhanced bio-adaptability

Saranya, K.; Kalaiyarasan, M.; Rajendran, N.

doi:10.1016/j.surfcoat.2019.124902

Cited by 28 publications

(12 citation statements)

References 59 publications

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“…The immersion test of the sample was conducted in the SBF . To determine the biomineralization ability of the coating, the samples were immersed in SBF solution with a volume-to-sample area ratio of 50 mL cm –2 , taken as per ASTM G31.…”

Section: Methodsmentioning

confidence: 99%

“…The immersion test of the sample was conducted in the SBF. 13 To determine the biomineralization ability of the coating, the samples were immersed in SBF solution with a volume-to-sample area ratio of 50 mL cm −2 , taken as per ASTM G31. The surface topography and functional groups of the samples immersed in the SBF for 7 days were monitored with HRSEM/ energy-dispersive X-ray (EDX) and ATR−IR spectroscopy.…”

Section: Methodsmentioning

confidence: 99%

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Anticancer Activity of Samarium-Coated Magnesium Implants for Immunocompromised Patients

Kannan

Rajendran

2020

ACS Appl. Bio Mater.

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The removal of tumors in the osseous tissue leads to functional disorders. To overcome this issue, biodegradable implants are used to replace the damaged part of the system. In the study, samarium oxide was coated on the anodic layer of AZ31 magnesium alloy. The potentiodynamic polarization, electrochemical impedance, and localized electrochemical impedance spectroscopy studies were carried out for the samarium-coated magnesium alloy. The corrosion resistance of the coating improved several folds than the bare alloy. The apatite formed on the 3rd day of immersion in the simulated body fluid showed cuboid and triangular structures, whereas on the 7th day, it exhibited a sea sponge-like appearance. The coating exhibited inherent anticancer and antibacterial properties. Our work suggests that the samarium coating is expected to be a promising orthopedic implant for preventing tumor relapse and metastasis.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Anticancer Activity of Samarium-Coated Magnesium Implants for Immunocompromised Patients

Kannan

Rajendran

2020

ACS Appl. Bio Mater.

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“…The reduced selenium has been claimed to be in the form of an amorphous polymer network, which has been mechanistically compared to the structure of a chromium(VI) conversion coating [ 272 , 273 ] (see Section 3.1 ). A conversion bath with neutral pH (with selenite ions) [ 271 ] and an acidic bath (selenious acid) [ 272 ] also resulted in a conversion film of similar composition.…”

Section: Conversion Coatingsmentioning

confidence: 99%

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: PART I—Pre-Treatment and Conversion Coating

et al. 2022

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Corrosion protection systems based on hexavalent chromium are traditionally perceived to be a panacea for many engineering metals including magnesium alloys. However, bans and strict application regulations attributed to environmental concerns and the carcinogenic nature of hexavalent chromium have driven a considerable amount of effort into developing safer and more environmentally friendly alternative techniques that provide the desired corrosion protection performance for magnesium and its alloys. Part I of this review series considers the various pre-treatment methods as the earliest step involved in the preparation of Mg surfaces for the purpose of further anti-corrosion treatments. The decisive effect of pre-treatment on the corrosion properties of both bare and coated magnesium is discussed. The second section of this review covers the fundamentals and performance of conventional and state-of-the-art conversion coating formulations including phosphate-based, rare-earth-based, vanadate, fluoride-based, and LDH. In addition, the advantages and challenges of each conversion coating formulation are discussed to accommodate the perspectives on their application and future development. Several auspicious corrosion protection performances have been reported as the outcome of extensive ongoing research dedicated to the development of conversion coatings, which can potentially replace hazardous chromium(VI)-based technologies in industries.

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“…Saranya et al [ 92 ] investigated the role of selenium (Se) conversion coating on AZ31 Mg alloy for bio-mineralization and anti-bacterial response. A Bath with 0.2% selenous acid solution was prepared by mixing propanol and water.…”

Section: Coatings and Their Current Statusmentioning

confidence: 99%

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

Singh

Batra

Kumar

et al. 2023

Bioactive Materials

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Selenium conversion coating on AZ31 Mg alloy: A solution for improved corrosion rate and enhanced bio-adaptability

Cited by 28 publications

References 59 publications

Anticancer Activity of Samarium-Coated Magnesium Implants for Immunocompromised Patients

Anticancer Activity of Samarium-Coated Magnesium Implants for Immunocompromised Patients

Chromate-Free Corrosion Protection Strategies for Magnesium Alloys—A Review: PART I—Pre-Treatment and Conversion Coating

Progress in bioactive surface coatings on biodegradable Mg alloys: A critical review towards clinical translation

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