In situ giant- magnetoimpedance magnetometer measurement of weak magnetic fields produced by pitting corrosion on AISI 304 stainless steel surface

Silver has antimicrobial properties and when implemented on the stainless steel surface can inactivate microorganisms and consequently prevent biofilm formation and cross-contamination of food. Therefore, in this study we evaluated the antibacterial properties of silver ions implanted on AISI 304 stainless steel surfaces using low-energy doses against Salmonella Enteritidis and Listeria monocytogenes, two foodborne pathogens. AISI 304 stainless steel coupons were treated using energy of 2 and 4 keV for silver implantation and simulations were performed to estimate its dose distribution. Coupons containing silver ions were contaminated with S. Enteritidis and L. monocytogenes and incubated at 25 °C for 1 and 24 h. Results demonstrated that 4 keV treatment were able to reduce S. Enteritidis, but not L. monocytogenes. However, the 2 keV treatment showed significant reductions of both pathogens and the depth profiles of surfaces treated with 2 keV of energy showed 3.5×1016 silver atoms/cm² implanted in up to 5 nm from the stainless steel surface. Silver implanted on stainless steel using low-energy doses demonstrated antimicrobial properties against foodborne pathogens and this strategy can be used to reduce adhered cells and biofilm formation in food industries. Keywords: bacterial adhesion, biofilm, foodborne pathogens, ion implantation, silver ions

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Effects of X-rays Radiation on AISI 304 Stainless Steel Weldings with AISI 316L Filler Material: A Study of Resistance and Pitting Corrosion Behavior

Metals ◽

10.3390/met6050102 ◽

2016 ◽

Vol 6 (5) ◽

pp. 102 ◽

Cited By ~ 5

Author(s):

Francisco Cárcel-Carrasco ◽

Manuel Pascual-Guillamón ◽

Miguel Pérez-Puig

Keyword(s):

Stainless Steel ◽

Corrosion Behavior ◽

Pitting Corrosion ◽

304 Stainless Steel ◽

Filler Material ◽

X Rays ◽

Aisi 316L ◽

Aisi 304 Stainless Steel ◽

Aisi 304

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Manganese Effect on Isothermal High Temperature Oxidation Behaviour of AISI 304 Stainless Steel

Materials Science Forum ◽

10.4028/www.scientific.net/msf.595-598.1127 ◽

2008 ◽

Vol 595-598 ◽

pp. 1127-1134 ◽

Cited By ~ 1

Author(s):

Frédéric Riffard ◽

Henri Buscail ◽

F. Rabaste ◽

Eric Caudron ◽

Régis Cueff ◽

...

Keyword(s):

Stainless Steel ◽

High Temperature ◽

Oxide Scale ◽

304 Stainless Steel ◽

Initial Growth ◽

Aisi 304 Stainless Steel ◽

Protective Oxide ◽

Temperature Oxidation ◽

Aisi 304

Chromia-forming steels are excellent candidates to resist to high temperature oxidizing atmospheres because they form protective oxide scales. The oxide scale growth mechanisms are studied by exposing AISI 304 stainless steel to high temperature conditions in air, and the analyses were carried out by means of thermogravimetry and in situ X-rays diffraction. The in situ XRD analyses carried out during high temperature AISI 304 steel oxidation in air reveals the accelerated growth of iron-containing oxides such as hematite Fe2O3 and iron-chromite FeCr2O4, when the initial germination of the oxide layer contains the presence of a manganese-containing spinel compound (1000°C). When the initial growth shows the only chromia formation (800°C), hematite formation appears differed in time. Protection against corrosion is thus increased when the initial germination of manganese-containing spinel oxide is inhibited in the oxide scale.

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