Key factors for corrosion protection of metal surfaces with biofilms
Abstract
Biofouling and biocorrosion are two natural physico-chemical phenomena impacting the hulls of ships, pipes, heat exchangers or submerged port facilities. The economic impact of these phenomena would amount to several tens of billions of euros each year, affectingboth civilian and military installations. The techniques available for combating the appearance of dirt and corrosion are not satisfactory because they are ineffective and/or toxic. Understand bacterial adhesion processes is a key factor in order to develop effective soft strategies to limit biofouling and biocorrosion. The focus of this project is on the early stage of biofilm formation to understand (i) the nature of the chemical interactions of bacteria with material surfaces, (ii) the modifications of the material surface caused by the bacteria, in particular for the surface oxide layer on metals and alloys, and (iii) the effect on the corrosion behavior of the metallic material. To this aim an innovative approach using advanced surface chemical analysis techniques such as X-ray Photoelectron Spectroscopy (XPS) and Time-of-Flight Secondary Ions Mass Spectrometry (ToF-SIMS) will be used. The proposed study is fundamental and aims at increasing knowledge in order to then contribute to a surface engineering that can be used alone or combined with a biofilm designing approach.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2023
- Source ID
- N629092312019
Entities
People
- Philippe Marcus
Organizations
- Chimie ParisTech
- Office of Naval Research
- United States Navy