Fabrication, bio-corrosion behavior and mechanical properties of a Mg/HA/MgO nanocomposite for biomedical applications

Khalajabadi, Shahrouz Zamani; Kadir, Mohammed Rafiq Abdul; Izman, S.; Ebrahimi‐Kahrizsangi, Reza

doi:10.1016/j.matdes.2015.09.065

Cited by 58 publications

(29 citation statements)

References 47 publications

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“…Another contribution to this excellent corrosion performance is decrease in the number of pores and voids around the HA agglomerates, which reduced penetration of the electrolyte into the matrix. It is to be noted that the corrosion rate of the MHM10 specimens (1.06 mm•yr −1 ) was ∼50% lower than the consensus threshold (2 mm•yr −1 ) [87].…”

Section: Emerging Innovative Materialsmentioning

confidence: 73%

“…In Kokubo SBF, at 27˚C, the corrosion rate of specimens of these composites was 4.28, 4.65, 1.06, and 1.94 mm/year [87]. In the case of the MHM10 specimens, the corrosion products were, mainly, Mg(OH) 2 nanorods, which have a hierarchical structure; HA; and Ca(PO 4 ) 2 [87]. Growth of Mg(OH) 2 nanorods in the specimen increased the contact angle between the solution and the substrate, resulting in the substantially decreased hydrogen evolution rate [87].…”

Section: Emerging Innovative Materialsmentioning

confidence: 96%

“…An example of such materials is a composite fabricated using powders of Mg, nanoHA (mean particle size < 100 nm), and nanoMgO powder (mean particle size < 100 nm) as the raw materials, yielding the following four compositions: 72.5Mg-27.5nHA (MH), 75Mg-20nHA-5MgO (MHM5), and 77.5Mg-12.5nHA-10.0MgO (MHM10), and 80Mg-5nHA-15MgO (MHM15) [87]. The specimens were produced using a blend-cold press-sinter powder metallurgy method; specifically 1) the powder blend was dried in a vacuum oven (220˚C for 10 h); 2) the dried blend was mixed using a planetary ball mill (2 h; Ar atmosphere); and 3) the mixture was pressed (840 MPa) and then sintered (400˚C; 1.5 h; Ar atmosphere) [87].…”

Section: Emerging Innovative Materialsmentioning

confidence: 99%

“…The specimens were produced using a blend-cold press-sinter powder metallurgy method; specifically 1) the powder blend was dried in a vacuum oven (220˚C for 10 h); 2) the dried blend was mixed using a planetary ball mill (2 h; Ar atmosphere); and 3) the mixture was pressed (840 MPa) and then sintered (400˚C; 1.5 h; Ar atmosphere) [87]. In Kokubo SBF, at 27˚C, the corrosion rate of specimens of these composites was 4.28, 4.65, 1.06, and 1.94 mm/year [87]. In the case of the MHM10 specimens, the corrosion products were, mainly, Mg(OH) 2 nanorods, which have a hierarchical structure; HA; and Ca(PO 4 ) 2 [87].…”

Section: Emerging Innovative Materialsmentioning

confidence: 99%

“…In the case of the MHM10 specimens, the corrosion products were, mainly, Mg(OH) 2 nanorods, which have a hierarchical structure; HA; and Ca(PO 4 ) 2 [87]. Growth of Mg(OH) 2 nanorods in the specimen increased the contact angle between the solution and the substrate, resulting in the substantially decreased hydrogen evolution rate [87]. Another contribution to this excellent corrosion performance is decrease in the number of pores and voids around the HA agglomerates, which reduced penetration of the electrolyte into the matrix.…”

Section: Emerging Innovative Materialsmentioning

confidence: 99%

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Reduction in the Corrosion Rate of Magnesium and Magnesium Alloy Specimens and Implications for Plain Fully Bioresorbable Coronary Artery Stents: A Review

Lewis¹

2016

WJET

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The most popular treatment/management modality for coronary artery disease, which is one of the leading causes of death, is percutaneous transluminal coronary intervention (popularly known as "plain old balloon angioplasty") followed by implantation of a stent ("stenting"). Stent types have evolved from bare metal stents through first-generation drug-eluting stents to fully bioresorbable stents (FBRSs). Two examples of FBRSs are 1) Mg scaffold with no coating; and 2) Mg alloy scaffold coated with a bioresorbable polymer in which an anti-proliferative drug is embedded. In the case of Mg/Mg alloy FBRSs, one of the reported clinical results is that the resorption time of the stent is too short (<∼4 mo to ∼12 mo), a consequence of the high corrosion rate of the metal/alloy. The present review article contains 1) a summarized but comprehensive comparison and contrast of all the types of stents, with special reference to Mg/Mg alloy FBRSs; 2) a critical review of the body of literature on methods to reduce the corrosion rate of Mg/Mg alloy specimens in various aqueous biosimulating media that may have implications for plain Mg/Mg alloy FBRSs, examples of such methods being alloy chemistry modification and fabrication using a nanocomposite; and 3) directions for future work on Mg/Mg alloy FBRSs that draw upon the findings highlighted in item (2) above as well as on other ideas, such as utilization of a Mg matrix composite and fabrication using a metal additive manufacturing method. Thus, information given in this review may find use in work on decreasing the in vivo resorption time (and, hence, improving the clinical efficacy) of the current generation of fully-bioresorbable Mg/Mg-alloy stents as well as guide the development of the next generation of these stents.

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Section: Emerging Innovative Materialsmentioning

confidence: 73%

Section: Emerging Innovative Materialsmentioning

confidence: 96%

Section: Emerging Innovative Materialsmentioning

confidence: 99%

Section: Emerging Innovative Materialsmentioning

confidence: 99%

Section: Emerging Innovative Materialsmentioning

confidence: 99%

See 3 more Smart Citations

Reduction in the Corrosion Rate of Magnesium and Magnesium Alloy Specimens and Implications for Plain Fully Bioresorbable Coronary Artery Stents: A Review

Lewis¹

2016

WJET

View full text Add to dashboard Cite

show abstract

Biomaterials for orthopedic applications and techniques to improve corrosion resistance and mechanical properties for magnesium alloy: a review

et al. 2023

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The present study aims to collect data, compare results and assess techniques used for improving corrosion resistance and mechanical properties of biodegradable Mg alloys for fixation elements and orthopedic applications. A general description of biomaterials used for orthopedic implants is performed, including non-bioabsorbable materials. Different methods for reducing the corrosion rate in Mg alloys are researched, and the efficiencies are assessed. After evaluating different techniques, surface modification is found to be the most promising technique to reduce the corrosion rate with an efficiency of 85%. Regarding the Mg alloying agents, Zn is considered as the best candidate to improve the corrosion response and biocompatibility of the Mg.

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Study of compaction-free fabrication of topologically ordered functionally graded iron-hydroxyapatite-zinc biodegradable composite implants

Tripathi,

Pandey

2024

J Mater Sci

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Fabrication, bio-corrosion behavior and mechanical properties of a Mg/HA/MgO nanocomposite for biomedical applications

Cited by 58 publications

References 47 publications

Reduction in the Corrosion Rate of Magnesium and Magnesium Alloy Specimens and Implications for Plain Fully Bioresorbable Coronary Artery Stents: A Review

Reduction in the Corrosion Rate of Magnesium and Magnesium Alloy Specimens and Implications for Plain Fully Bioresorbable Coronary Artery Stents: A Review

Biomaterials for orthopedic applications and techniques to improve corrosion resistance and mechanical properties for magnesium alloy: a review

Study of compaction-free fabrication of topologically ordered functionally graded iron-hydroxyapatite-zinc biodegradable composite implants

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