Corrosion behaviour of electropolished AISI 316L austenitic biomaterial in physiological solution

Zatkalíková, Viera; Markovičová, Lenka; Skorvanova, M

doi:10.1088/1757-899x/266/1/012016

Cited by 8 publications

(12 citation statements)

References 8 publications

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“…4. R p obtained for the surface electropolished at 40 ºC, 0.8 A/cm 2 7 minutes (327 485 Ω), which showed the high quality passive film also by cyclic potentiodynamic polarization test [23] could be considered the threshold R p value. Based on this consideration, passive films of specimens with higher R p values could be considered to be of the sufficient quality and corrosion resistance.…”

Section: Discussionmentioning

confidence: 86%

“…A simultanous increase in current density and time at 40 ºC caused a 3.5-fold increase in R p . When assessing the surface passive film quality, the threshold R p value could be considered 327 485 Ω, obtained for the specimen 40-0.8-7 (electropolished at 40 ºC, 0.8 A/cm 2 , 7 minutes), therefore the same material, identically pretreated and electropolished in the same solution at the same conditions and tested by cyclic potentiodynamic polarization test showed according to the authors [23] high quality passive film without initiation of the pitting (potentiodynamic curve with low passive current density and without depassivation over the whole passivity region, Fig. 4).…”

Section: Fig 3 Nyquist Curves For All Tested Aisi 316l Surfaces Typesmentioning

confidence: 99%

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Corrosion Properties of Electropolished AISI 316L Austenitic Biomaterial in Relation to Electropolishing Conditions

Zatkalíková¹,

Markovičová²,

Uhríčik³

et al. 2021

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Electropolishing is recommended for various biomedical applications of austenitic biomaterials because it enables to achieve high brightness, very low surface roughness, excellent corrosion resistance and reduced bacterial attachment without residual surface tensions. The quality of an electropolished surface depends strongly on the composition of used electrolyte and on the applied electropolishing conditions. In this article the corrosion properties of eight AISI 316L surfaces electropolished in the same solution but at the different conditions were evaluated on the bases of the electrochemical impedance spectroscopy (EIS) test and exposure immersion test. The aim was to find whether in the frame of recommended electropolishing conditions (temperature, current density, time) the optimal combination exists which would provide the best corrosion properties of the surface passive film. The results showed that the electropolishing temperature 50 ºC should be preferred due to the lower roughness parameters and minimizing the possibility of the bacterial attachment.

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Section: Discussionmentioning

confidence: 86%

Section: Fig 3 Nyquist Curves For All Tested Aisi 316l Surfaces Typesmentioning

confidence: 99%

Corrosion Properties of Electropolished AISI 316L Austenitic Biomaterial in Relation to Electropolishing Conditions

Zatkalíková¹,

Markovičová²,

Uhríčik³

et al. 2021

View full text Add to dashboard Cite

show abstract

“…In order to achieve as close as possible set values and to ensure the universality of its use, multiple materials and procedures of manufacturing of the artificial cornea have been realized. [23], [24]. The artificial cornea is one of the crucial parts of the described standard as it transmits the pressure generated from the piston via liquid to the tonometer.…”

Section: Reference Standard Developmentmentioning

confidence: 99%

“…Young's modulus of silicone based materials is (0.1 -1.4) MPa. As can be observed it is noticeably larger in comparison to human cornea's Young's modulus that is from 0.054 MPa to 0.359 MPa [20], [21], [23], [24].…”

Section: Reference Standard Developmentmentioning

confidence: 99%

Developments and Progress in Non-contact Eye Tonometer Calibration

Pavlasek¹,

Rybář

Ďuriš

et al. 2020

Measurement Science Review

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This paper focuses on the problematic of intraocular pressure (IOP) measurements, performed by non-invasive methods. More specifically, the devices that are connected with the presented finding are non-contact tonometers that use concentrated air stream and optical sensors to determine the IOP within a human’s eye. The paper analyzes various influential factors that have an effect on the determination of the IOP values originating from the patients themselves and from the non-contact tonometer devices. The paper furthermore elaborates on the lack of independent methods of calibration and control of these devices. In order to fill this gap a measurement standard device that is capable of calibrating and testing these devices with traceability to the basic SI unit is presented. A detailed characterization and the determination of the expected uncertainty of the device are provided. By introducing an independent and traceable calibration method and control of non-contact tonometers into the clinical practice, the reliability of the measured IOP that is the primary indicator of glaucoma can be improved.

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“…This gives considerable room for possible errors in the calculation of the "true" intraocular pressure value. [1,4] The most influential factors of the non-contact measurements of IOP are:…”

Section: Uncertainty Of Non-contact Eye Tonometersmentioning

confidence: 99%

Factors Affecting Measurements of IOP Using Non-Contact Eye Tonometer

Rybář

Hučko

Ďuriš

et al. 2020

Strojnícky Časopis - Journal of Mechanical Engineering

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The objective measurement of intraocular pressure (IOP) represents the identification of the symptoms of some diseases, e.g. glaucoma. This objective measurement can only be achieved by correct calibration of tonometers. Today, there is no uniform methodology for this calibration. Therefore, we introduce potential sources of error and try to quantify their contributions in this paper. Subsequently, a calibration standard containing an artificial cornea with similar properties to the human one should be designed.

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Corrosion behaviour of electropolished AISI 316L austenitic biomaterial in physiological solution

Cited by 8 publications

References 8 publications

Corrosion Properties of Electropolished AISI 316L Austenitic Biomaterial in Relation to Electropolishing Conditions

Corrosion Properties of Electropolished AISI 316L Austenitic Biomaterial in Relation to Electropolishing Conditions

Developments and Progress in Non-contact Eye Tonometer Calibration

Factors Affecting Measurements of IOP Using Non-Contact Eye Tonometer

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