Influence of the surface mechanical attrition treatment (SMAT) on the corrosion behavior of Co28Cr6Mo alloy in Ringer’s solution

Nkonta, D. V. Tchana; Simescu-Lazar, Florica; Drevet, Richard; Aaboubi, O.; Fauré, J.; Retraint, Delphine; Benhayoune, Hicham

doi:10.1007/s10008-017-3851-5

Cited by 19 publications

(6 citation statements)

References 28 publications

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“…Beyond this value, the generated dihydrogen bubbles damage the electrodeposited coating [118]. This maximum current density can be used to produce a calcium-deficient apatite according to reaction (16). Typically, this phase has a calcium to phosphorus atomic ratio between 1.5 and 1.6.…”

Section: Higher Current Densitiesmentioning

confidence: 99%

“…The worldwide clinical demand for bone tissue repair increases every year, particularly due to the aging population [1][2][3][4]. The main metallic bone implants used in orthopedic or dental surgeries are titanium alloys [5][6][7][8][9][10], stainless steel [11][12][13][14][15], and CoCr alloys [16][17][18][19][20][21][22]. These alloys are used because they have suitable mechanical properties for bone tissue replacement and their biocompatibility with the body environment is good.…”

Section: Introductionmentioning

confidence: 99%

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Electrodeposition of Calcium Phosphate Coatings on Metallic Substrates for Bone Implant Applications: A Review

Drevet

Benhayoune

2022

Coatings

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This review summaries more than three decades of scientific knowledge on electrodeposition of calcium phosphate coatings. This low-temperature process aims to make the surface of metallic bone implants bioactive within a physiological environment. The first part of the review describes the reaction mechanisms that lead to the synthesis of a bioactive coating. Electrodeposition occurs in three consecutive steps that involve electrochemical reactions, pH modification, and precipitation of the calcium phosphate coating. However, the process also produces undesired dihydrogen bubbles during the deposition because of the reduction of water, the solvent of the electrolyte solution. To prevent the production of large amounts of dihydrogen bubbles, the current density value is limited during deposition. To circumvent this issue, the use of pulsed current has been proposed in recent years to replace the traditional direct current. Thanks to breaking times, dihydrogen bubbles can regularly escape from the surface of the implant, and the deposition of the calcium phosphate coating is less disturbed by the accumulation of bubbles. In addition, the pulsed current has a positive impact on the chemical composition, morphology, roughness, and mechanical properties of the electrodeposited calcium phosphate coating. Finally, the review describes one of the most interesting properties of electrodeposition, i.e., the possibility of adding ionic substituents to the calcium phosphate crystal lattice to improve the biological performance of the bone implant. Several cations and anions are reviewed from the scientific literature with a description of their biological impact on the physiological environment.

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Section: Higher Current Densitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Calcium Phosphate Coatings on Metallic Substrates for Bone Implant Applications: A Review

Drevet

Benhayoune

2022

Coatings

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“…The simulated equivalent electrical circuit [19] is generated to evaluate Rp as shown in Table 1 and the corrosion resistance follows the order of 10T > 4T > CG. The beneficial influence of surface nanostructure on corrosion resistance are also found on metallic materials produced by other methods such as sand blasting [55], ultrasonic impact treatment [56] and surface mechanical attrition treatment [57].…”

Section: Influence Of Grain Refinement On the Corrosion Behaviormentioning

confidence: 89%

A more defective substrate leads to a less defective passive layer: Enhancing the mechanical strength, corrosion resistance and anti-inflammatory response of the low-modulus Ti-45Nb alloy by grain refinement

Xie

Liao

et al. 2021

Acta Biomaterialia

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“…The use of SMAT to generate this plastic deformation in the CoCrMo alloy is original and requires to investigate the influence of this treatment on the alloy microstructure, crystallinity, and phase transformation. The knowledge of these properties is essential for the bone implant applications, particularly because they are known to impact the wear and the corrosion behaviors of the CoCrMo alloy in physiological environment (Pezzotti & Yamamoto, 2014; Tchana Nkonta et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of surface mechanical attrition treatment on the microstructure of cobalt–chromium–molybdenum biomedical alloy

Nkonta

Drevet

Fauré

et al. 2020

Microscopy Res & Technique

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This research work describes the impact of the surface mechanical attrition treatment (SMAT) on the microstructure of cobalt–chromium–molybdenum (CoCrMo), a biomedical alloy commonly used for orthopedic applications. This surface treatment induces crystalline phases transformations characterized by X‐ray diffraction (XRD) and selected area electron diffraction (SAED). The corresponding structural changes are observed from cross‐section images obtained by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the SMAT process induces the martensitic transformation of the CoCrMo alloy (from γ‐fcc phase to ε‐hcp phase) related to an important grain refinement due to twinning and sliding.

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Influence of the surface mechanical attrition treatment (SMAT) on the corrosion behavior of Co28Cr6Mo alloy in Ringer’s solution

Cited by 19 publications

References 28 publications

Electrodeposition of Calcium Phosphate Coatings on Metallic Substrates for Bone Implant Applications: A Review

Electrodeposition of Calcium Phosphate Coatings on Metallic Substrates for Bone Implant Applications: A Review

A more defective substrate leads to a less defective passive layer: Enhancing the mechanical strength, corrosion resistance and anti-inflammatory response of the low-modulus Ti-45Nb alloy by grain refinement

Effect of surface mechanical attrition treatment on the microstructure of cobalt–chromium–molybdenum biomedical alloy

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