Influence of surface roughness of stainless steel on microbial adhesion and corrosion resistance

Hilbert, Lisbeth Rischel; Bagge-Ravn, Dorthe; Kold, John; Gram, Lone

doi:10.1016/s0964-8305(03)00104-5

Cited by 235 publications

(130 citation statements)

References 33 publications

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“…Hilbert et al 32) studied bacterial attachment to stainless steel surfaces whose roughness ranged from Raϭ0.01 to 0.9 mm, and they showed that the bacterial attachment was not affected by the value of Ra in this range. In our experiments, therefore surface roughness and wettability presumably had little effect on bacterial adhesion, and the differences in the behaviors of bacterial adhesion among the samples can be attributed to the difference in the kind of substrate substances.…”

Section: Resultsmentioning

confidence: 99%

Bacterial Attachment and Initiation of Biofilms on the Surface of Copper Containing Stainless Steel

et al. 2010

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Type 304 stainless steel, copper containing stainless steel, and oxygen free copper were subjected to antibacterial tests and short term exposure experiments in a laboratory. Antibacterial tests showed that the copper containing stainless steel, as well as oxygen free copper, was antibacterial, yet the antibacterial activity of the copper containing stainless steel was lower than that of the oxygen free copper. In short term exposure experiments, the copper containing stainless steel, as well as type 304 stainless steel, didn't sterilize planktonic bacterial cells, while the oxygen free copper reduced the number of alive planktonic bacterial cells. The copper containing stainless steel did not protect itself from bacterial adhesion, but sterilized about 75 % of sessile bacterial cells and reduced formation of biofilms on its surface. Such experimental results indicate that the copper containing stainless steel is effective against biofilm related impacts.KEY WORDS: antibacterial stainless steel; copper; bacterial attachment; biofilm; microbiologically influenced corrosion; biocorrosion. 133© 2010 ISIJ spores and vegetative cells, and the functions were not reduced by dissolved organic substances. 26) In this paper, copper was selected as the antibacterial agent because of its higher bactericidal function comparative to silver. 27) Bacterial attachment and initiation of biofilms on a copper containing stainless steel surfaces were studied. Experimental Sample Materials and Preparation of SpecimensSample materials subjected to experiments were type 304 stainless steel (SS), copper containing stainless steel (Cu-SS) (MSSAM3, Nisshin Steel Co., Ltd., Tokyo, Japan) and oxygen free copper (OFC). Copper concentration in the Cu-SS was 3.78 mass%. As the phase of the Cu-SS was austenite, type 304 stainless steel was selected as a reference stainless steel. The chemical compositions of the sample materials are summarized in Table 1.Coupon specimens for antibacterial tests, 25 mmϫ25 mmϫ1 mm, were machined from supplied plates. The surfaces of specimens were polished by #1500 emery papers to obtain uniform surface finish. The polished specimens were subjected to ultrasonic cleaning in 70 % ethanol solution followed by drying and sterilization under ultraviolet (UV) ray illumination in a clean bench. Steam sterilization was not employed for sterilization of specimens because the steam sterilization process could make oxide layer and change chemical properties of the sample metal surfaces.Poly-ethylene (PE) films used in antibacterial tests were cleaned, sterilized and dried in the same manner as those for the specimens.For exposure experiments, coupon specimens with the size of 12.5 mmϫ12.5 mmϫ1 mm were used. Except the size of specimens, the preparation processes of specimens for exposure experiments was the same as that employed for the preparation of the specimens subjected to antibacterial tests. InoculumBacteria used in this study were Pseudomonas sp. The bacteria were isolated from a water system where MIC was suspecte...

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Section: Resultsmentioning

confidence: 99%

Bacterial Attachment and Initiation of Biofilms on the Surface of Copper Containing Stainless Steel

et al. 2010

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“…70 Conversely, Singh et al found increased bacterial adhesion and biofilm formation on Ti surfaces with Ra (roughness average) values , 20 nm, and increased protein adsorption at Ra values between 16 and 32 nm; further increases in surface roughness were associated with reduced pathogen activity. 71 In contrast, Hilbert et al could not correlate bacterial adhesion, colonization, and growth with changes in surface finish ranging from 0.1 to 0.90 µm, 72 and Flint et al found that bacterial adhesion could not be related to surface roughness at all. 73 Thus, surface roughness alone may not fully explain the differences in bacterial adhesion and protein adsorption.…”

Section: Nanostructured Surfacesmentioning

confidence: 97%

Decreased bacteria activity on Si3N4 surfaces compared with PEEK or titanium

Gorth¹,

Puckett²,

Ercan³

et al. 2012

IJN

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A significant need exists for orthopedic implants that can intrinsically resist bacterial colonization. In this study, three biomaterials that are used in spinal implants -titanium (Ti), polyether-ether-ketone (PEEK), and silicon nitride (Si 3 N 4 ) -were tested to understand their respective susceptibility to bacterial infection with Staphylococcus epidermidis, Staphlococcus aureus, Pseudomonas aeruginosa, Escherichia coli and Enterococcus. Specifically, the surface chemistry, wettability, and nanostructured topography of respective biomaterials, and the effects on bacterial biofilm formation, colonization, and growth were investigated. Ti and PEEK were received with as-machined surfaces; both materials are hydrophobic, with net negative surface charges. Two surface finishes of Si 3 N 4 were examined: as-fired and polished. In contrast to Ti and PEEK, the surface of Si 3 N 4 is hydrophilic, with a net positive charge. A decreased biofilm formation was found, as well as fewer live bacteria on both the as-fired and polished Si 3 N 4 . These differences may reflect differential surface chemistry and surface nanostructure properties between the biomaterials tested. Because protein adsorption on material surfaces affects bacterial adhesion, the adsorption of fibronectin, vitronectin, and laminin on Ti, PEEK, and Si 3 N 4 were also examined. Significantly greater amounts of these proteins adhered to Si 3 N 4 than to Ti or PEEK. The findings of this study suggest that surface properties of biomaterials lead to differential adsorption of physiologic proteins, and that this phenomenon could explain the observed in-vitro differences in bacterial affinity for the respective biomaterials. Intrinsic biomaterial properties as they relate to resistance to bacterial colonization may reflect a novel strategy toward designing future orthopedic implants.

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“…However, deep heat treatment is not steadily gaining acceptance as a process for improving the corrosion resistance, as reported by Uygur et al 21 . There is an improvement in the corrosion resistance, considering both the general and pitting corrosion, the latter being the kind of corrosion that too often attacks this class of steel 22 . Steels submitted to the quenching and tempering processes have a higher pitting potential than the as-received one.…”

Section: Electrochemical Behaviormentioning

confidence: 99%

Tribocorrosion and Electrochemical Behavior of DIN 1.4110 Martensitic Stainless Steels After Cryogenic Heat Treatment

et al. 2017

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DIN 1.4110 martensitic stainless steel is largely used in the cutlery industry due to its high corrosion resistance associated with high mechanical resistance. However, when this material works under corrosion and wear conditions at the same time, their synergistic effect can accelerate the degradation process of the alloy. Cryogenic heat treatments have been proposed to improve the dimensional stability and mechanical properties, since they minimize the amount of retained austenite. The aim of this work is to study the effect of deep cryogenic heat treatment at -80 ºC and at -196 ºC on the corrosion resistance and tribocorrosion behavior of DIN 1.4110 martensitic stainless steel. The microstructure, hardness, corrosion resistance and tribocorrosion behavior were evaluated. Although the heat-treated samples presented higher hardness and lower corrosion current density (i corr ) compared to samples in spheroidized condition, their material removal under tribocorrosion conditions increased, which demonstrated the synergy between corrosion and wear.

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Influence of surface roughness of stainless steel on microbial adhesion and corrosion resistance

Cited by 235 publications

References 33 publications

Bacterial Attachment and Initiation of Biofilms on the Surface of Copper Containing Stainless Steel

Bacterial Attachment and Initiation of Biofilms on the Surface of Copper Containing Stainless Steel

Decreased bacteria activity on Si3N4 surfaces compared with PEEK or titanium

Tribocorrosion and Electrochemical Behavior of DIN 1.4110 Martensitic Stainless Steels After Cryogenic Heat Treatment

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