The corrosion behavior of copper cold spray coatings on a carbon steel substrate was compared to that of commercially available wrought copper under the conditions anticipated in a nuclear waste repository. Corrosion potential and linear polarization resistance measurements were conducted over 90 d to 120 d in 3.0 mol/L NaCl under anoxic (1) and oxygenated-toanoxic (2) conditions to simulate th...

Corrosion protection was always an important part of industrial development. The use of oiland solvent-based products in the preservation of metal has been a common practice for over one hundred years. While these products may offer good corrosion protection, they often contain hazardous ingredients and are non-degradable. A number of regulations were implemented recently for the protection of ...

Aqueous contaminant removal in the presence of metallic iron is often regarded as a reductive transformation mediated by the Fe surface. However, successful removal of theoretically non-reducible contaminants has been largely reported. This paper presents a rebuttal of the concept of contaminant reductive transformation. It is argued through a careful examination of the evolution of the volume ...

The effects of dual Zr & N plasma immersion ion implantation (PIII) on the corrosion behavior of WE43Mg alloy are evaluated in simulated body fluid (SBF) and cell culture medium (cDMEM). Zr & N PIII improves the corrosion resistance of WE43 which exhibits smaller icorr, larger R1 & R2, smaller CPE2, and larger phase angle maxima in SBF and cDMEM. The Zr & N PIII WE43 samples exhibit 12-folds de...

To improve the performances of Nickel-Metal Hydride batteries, an important step is the understanding of the corrosion processes that take place in the electrode material. In particular, the present study focuses for the first time on the model (La,Mg)2Ni7 system. The calendar corrosion in 8.7M KOH medium was investigated from 6 hours to 16 weeks immersion. By a unique combination of structural...

By combination of structural and elemental characterizations, the corrosion products are evidenced. We observe the formation of platelets and needles, with a better morphological definition in the case of Mg-containing samples. The needles are associated to La(OH)3 and possess nanometric inner hollow channels. The platelets are made of Ni(OH)2 for pure La2Ni7. When Mg is present, we demonstrate...

The life of a concrete bridge exposed to deicing salt or seawater has often been limited by corrosion of the steel reinforcement. The service life of a concrete structure, degraded by corrosion, is considered to be the sum of the initiation and propagation periods. The initiation phase is the time required for sufficient accumulation of aggressive species at the rebar surface to initiate corros...

The corrosion behaviour of mild steel (MS) was systematically investigated as a function of the alkyl chain length in the cation of 1-alkyl-3-methylimidazolium tricyanomethanide ([Cnmim]TCM, n 1⁄4 2, 4, 6 and 8) ionic liquids (ILs) with respect to their potential application as a structural material and solvents for CO2 capture plants respectively. The surface of MS was examined by scanning ele...