Search results for "Passive film"

showing 4 items of 34 documents

Ti-Mo cast alloys for biomedical applications. Anodic behavior and passive film properties

2010

Settore ING-IND/23 - Chimica Fisica Applicatatitanium alloys passive films
researchProduct

Effect of E. coli biofilm formation and removal on passive films on AISI 316L during fermentation processes

2021

Abstract 316L coupons were sanitized in hot water vapour inducing iron enrichment in passive films. Coupons were then immersed in a pilot fed-batch fermenter in presence of E. coli. Sanitization causes iron enrichment in passive films. Fermentation causes the growth of biofilm on the SS, constituted by bacteria embedded in an extracellular polymeric substance. During fermentation SS open circuit potential is very negative due to low oxygen concentration on its surface, while the chelating action of siderophores induces chromium enrichment in the passive film. Disinfection in NaClO for 30 min allows removal of biofilm and formation of a protective passive film.

SiderophorebiologyChemistry020209 energyGeneral Chemical EngineeringBiofilmchemistry.chemical_elementIndustrial fermentation02 engineering and technologyGeneral Chemistry021001 nanoscience & nanotechnologybiology.organism_classificationAISI 316L Biofilm Disinfection Fermentation Passive film SanitizationCorrosionChromiumExtracellular polymeric substanceSettore ING-IND/23 - Chimica Fisica ApplicataChemical engineering0202 electrical engineering electronic engineering information engineeringGeneral Materials ScienceFermentation0210 nano-technologyBacteria
researchProduct

CORROSION RESISTANCE OF DIFFERENT STAINLESS STEEL GRADES IN FOOD AND BEVERAGE INDUSTRY

2020

Stainless steel EIS XPS Passivity Transpassivity Food industry Ions release ICP-OES Polarization resistance Passive films Chromium Duplex Austenitic Photoelectrochemistry Biofilm NaClO Cleaning Disinfection Corrosion resistance Mott-Schottky Corten Carbon steelSettore ING-IND/23 - Chimica Fisica Applicata
researchProduct

Modeling of differential admittance behaviour of thin amorphous semiconducting film

2012

The understanding of the electronic properties of thin oxide film is an important step toward the understanding of the mechanisms of film dissolution and breakdown as well as for their application in the field of electrolytic capacitors and solar energy conversion. From this point of view the correct location of the characteristic energy levels (flat band potential, Ufb, and conduction (valence) band edge EC (EV)), of a passive film/electrolyte junction is the preliminary task for a deeper understanding of the mechanism of charge transfer at oxide/electrolyte interface. At this aim the most frequently employed method to locate such characteristic energy levels of semiconductor oxide/electro…

electronic propertieSettore ING-IND/23 - Chimica Fisica Applicatathin oxide filmpassive filmM-S theorya-Nb2O5
researchProduct