Functionalization of steel surfaces with organic acids: Influence on wetting and corrosion behavior

Biofilms are a mixture of bacteria and extracellular products secreted by bacterial cells and are of great concern to the food industry because they offer physical, mechanical, and biological protection to bacterial cells. This study was conducted to quantify biofilms formed by different Shiga toxin–producing Escherichia coli (STEC) strains on polystyrene and stainless steel surfaces and to determine the effectiveness of sanitizing treatments in control of these biofilms. STEC producing various amounts of cellulose (n = 6) or curli (n = 6) were allowed to develop biofilms on polystyrene and stainless steel surfaces at 28°C for 7 days. The biofilms were treated with 2% acetic or lactic acid and manufacturer-recommended concentrations of acidic or alkaline sanitizers, and residual biofilms were quantified. Treatments with the acidic and alkaline sanitizers were more effective than those with the organic acids for removing the biofilms. Compared with their counterparts, cells expressing a greater amount of cellulose or curli formed more biofilm mass and had greater residual mass after sanitizing treatments on polystyrene than on stainless steel. Research suggests that the organic acids and sanitizers used in the present study differed in their ability to control biofilms. Bacterial surface components and cell contact surfaces can influence both biofilm formation and the efficacy of sanitizing treatments. These results provide additional information on control of biofilms formed by STEC.

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ChemInform Abstract: The Effect of Misch Metal Addition on Corrosion Behavior of Aluminum in Inorganic and Organic Acids

ChemInform ◽

10.1002/chin.199305009 ◽

2010 ◽

Vol 24 (5) ◽

pp. no-no

Author(s):

A. K. BHATTAMISHRA ◽

G. S. MISHRA ◽

M. K. BANERJEE

Keyword(s):

Organic Acids ◽

Corrosion Behavior ◽

Misch Metal ◽

Metal Addition ◽

Inorganic And Organic

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Production of Tritiated Organic Acids at Tritium-Bearing Stainless Steel Surfaces Exposed to Air

Fusion Technology ◽

10.13182/fst95-a30560 ◽

1995 ◽

Vol 28 (3P2) ◽

pp. 1138-1143 ◽

Cited By ~ 2

Author(s):

Y. Belot ◽

H. Camus ◽

S. Raviart ◽

A.B. Antoniazzi ◽

W.T. Shmayda

Keyword(s):

Stainless Steel ◽

Organic Acids ◽

Steel Surfaces

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Modification of Stainless Steel Surfaces by Ion Beams for Improved Corrosion Resistance

MRS Proceedings ◽

10.1557/proc-93-361 ◽

1987 ◽

Vol 93 ◽

Author(s):

R. S. Bhattacharya ◽

C. N. Raffoul ◽

A. K. Rai ◽

P. P. Pronko

Keyword(s):

Stainless Steel ◽

Corrosion Behavior ◽

Potentiodynamic Polarization ◽

Ion Beam ◽

Electron Beam Evaporation ◽

Thin Layers ◽

304 Stainless Steel ◽

Stainless Steel 304 ◽

Modified Surfaces ◽

Steel Surfaces

ABSTRACTAn investigation of the ion beam mixing of Mo and Ta layers with 304 stainless steel and the potentiodynamic polarization behavior of the modified surfaces are described.Alternating thin layers (<100Å) of stainless steel (304) and either Mo or Ta were deposited by electron beam evaporation. Ion mixing was performed with 2 MeV Ni+ at a fluence of 5 × 1016cm−2. Examination of the mixed surfaces with TEN revealed characteristics of the amorphous phase and in some cases being embedded with crystalline regions for both Mo and Ta mixed stainless steel surfaces. The amorphous surfaces were tested for their corrosion behavior in 1M H2SO4 and O.1M NaCl solutions by the potentiodynamic polarization method. Significantly improved corrosion behavior were obtained for modified surfaces compared to unmodified stainless steel.

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Preconditioning of AISI 304 stainless steel surfaces in the presence of flavins—Part I: Effect on surface chemistry and corrosion behavior

Materials and Corrosion ◽

10.1002/maco.202012191 ◽

2020 ◽

Author(s):

Nina Wurzler ◽

Oded Sobol ◽

Korinna Altmann ◽

Jörg Radnik ◽

Ozlem Ozcan

Keyword(s):

Stainless Steel ◽

Surface Chemistry ◽

Corrosion Behavior ◽

304 Stainless Steel ◽

Aisi 304 Stainless Steel ◽

Aisi 304 ◽

Steel Surfaces

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Anti-Corrosion Performance of Conductive Copolymers of Polyaniline/Polythiophene on a Stainless Steel Surface in Acidic Media

International Journal of Nanoscience ◽

10.1142/s0219581x19500236 ◽

2020 ◽

Vol 19 (03) ◽

pp. 1950023

Author(s):

Shouqing Xue ◽

Yuanzhong Ma ◽

Yunxia Miao ◽

Weinan Li

Keyword(s):

Stainless Steel ◽

Corrosion Behavior ◽

Steel Surface ◽

Electrochemical Impedance ◽

Oxalic Acid Solution ◽

Stainless Steel Surface ◽

Corrosion Performance ◽

Acidic Media ◽

Steel Composite ◽

Steel Surfaces

The composite conductive copolymers of polyaniline/polythiophene (Pani/PTH) were successfully prepared by an electrochemical method on a stainless steel surface containing both aniline and thiophene in a 0.3[Formula: see text]mol/L oxalic acid solution. The anti-corrosion performance of the Pani/PTH on stainless steel surfaces was investigated in acidic media by polarization curve analysis and electrochemical impedance spectroscopy (EIS). Additionally, the surface morphology of Pani/PTH composite conductive copolymers was observed by scanning electron microscopy (SEM). The results showed that the Pani/PTH copolymers strongly adhered to the surface of the stainless steel. Compared with that of bare stainless steel, composite conductive copolymers of Pani/PTH on the stainless steel surface provided good anti-corrosion behavior; additionally, the corrosion potential could be improved by approximately 400[Formula: see text]mV, while the current density decreased by two orders of magnitude in the corrosion media. The above results were in accordance with the SEM characterization results. The SEM spectrum showed that the Pani/PTH film had a uniform, dense and shiny structure, so it had better anti-corrosion behavior.

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Influence of Organic Acids on Corrosion Behavior of Boiler Tube Steels in Simulated AVT Waters Coexisted with Chloride Ions

Journal of the Japan Institute of Metals and Materials ◽

10.2320/jinstmet.74.565 ◽

2010 ◽

Vol 74 (9) ◽

pp. 565-571 ◽

Cited By ~ 2

Author(s):

Takahiro Nakane ◽

Li-Bin Niu ◽

Shuji Oishi ◽

Hiroshi Takaku

Keyword(s):

Organic Acids ◽

Corrosion Behavior ◽

Chloride Ions ◽

Boiler Tube ◽

Tube Steels

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Sem Studies of Co-Cr-Mo Surgical Implant Alloy Corrosion Behavior

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100055448 ◽

1982 ◽

Vol 40 ◽

pp. 520-521

Author(s):

Ann Chidester Van Orden ◽

John L. Chidester ◽

Anna C. Fraker ◽

Pei Sung

Keyword(s):

Electron Microscopy ◽

Corrosion Behavior ◽

Anodic Polarization ◽

Saline Solution ◽

Saturated Calomel Electrode ◽

Physiological Saline ◽

X Ray ◽

Physiological Saline Solution ◽

Scanning Electron

The influence of small variations in the composition on the corrosion behavior of Co-Cr-Mo alloys has been studied using scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX), and electrochemical measurements. SEM and EDX data were correlated with data from in vitro corrosion measurements involving repassivation and also potentiostatic anodic polarization measurements. Specimens studied included the four alloys shown in Table 1. Corrosion tests were conducted in Hanks' physiological saline solution which has a pH of 7.4 and was held at a temperature of 37°C. Specimens were mechanically polished to a surface finish with 0.05 µm A1203, then exposed to the solution and anodically polarized at a rate of 0.006 v/min. All voltages were measured vs. the saturated calomel electrode (s.c.e.).. Specimens had breakdown potentials near 0.47V vs. s.c.e.

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