.... The high-stresses at the fastener sites can preferentially initiate coating damage allowing for moisture ingress, which can lead to the formation of a galvanic couple between the aluminum alloy and the stainless steel fastener. Corrosion damage is known to cause early initiation of fatigue cracks, thus...

...Deepak K. Kamde; Sylvia Kessler; Radhakrishna G. Pillai Corrosion assessment of reinforced concrete (RC) structures with fusion-bonded-epoxy (FBE)-coated steel rebars is a challenge because the common inspection methods and data cannot be applied or interpreted in the same way...

... and mitigating Mg corrosion, particularly for automotive applications. Topics highlighted include the need for pretreatments and coatings suitable for mass vehicle production of Mg components, particularly for dissimilar metal joints involving Mg, Al, or steel, and corrosion evaluation methods more relevant...

...M.H. Nazir; Z.A. Khan; A. Saeed; K. Stokes The effect of residual and diffusion-induced stresses on corrosion at the interface of coating and substrate has been analyzed within a multidisciplinary approach, i.e., material science, solid mechanics, and electrochemistry. A self-consistent equation...

...S.M. Cambier; G.S. Frankel Filiform corrosion (FFC) has been shown to occur during field exposure of scribed organic-coated steel. In this paper, the FFC filament morphologies formed under polyvinyl butyral (PVB) and bisphenol A-based epoxy coatings after initiation with hydrochloric acid (HCl...

...Santiago J. Garcia; Xiaomin Wu; Sybrand van der Zwaag Recently, encapsulated silyl esters have been shown to act as efficient healing agents for self-healing anticorrosive coatings. While the positive protective effects were irrefutable, the actual protection mechanism has not been clarified yet...

...Mersedeh Akhoondan; Alberto A. Sagüés Aluminized steel Type 2 (AST2), ASTM A929, has a ~50 μm thick coating with outer and inner layers of Al alloy and Al-Fe intermetallic, respectively. AST2 culvert and drainage pipes are required to have a long service life (e.g., 75 years) in natural soil...

...S. Caporali; U. Bardi Corrosion properties of thin layers of a copper-tin-zinc-indium alloy (“white bronze”) were investigated in an artificial sweat solution indicating poor resistance properties. The coating degraded via pitting, generalized, and crevice corrosion, as evidenced by scanning...

...S. Song; G.-L. Song; W. Shen; M. Liu The electrochemical corrosion performance of E-coated, which is also known as electro-coated or electrophoresis-coated (a process of using direct current to deposit an organic coating), and powder-coated magnesium alloys AZ31 and AZ61 was investigated using AC...

...B. Ramezanzadeh; M.M. Attar St-37-type steel samples were pretreated with Cr(III) and Cr(VI) conversion coatings (CC). The Cr(III) pretreated samples were then posttreated by Co(II) and Ni(II) CC. The corrosion resistance of the samples was studied using direct current (DC) polarization technique...

... the pipe surface and the coating or increasing the coating thickness decreases O₂ diffusion to the pipe surface and decreases the crevice corrosion rate. External cathodic protection (CP) protects the pipe surface by cathodically reducing O₂ near the holiday. Pipeline corrosion...

...F.M. Song; D.W. Kirk; J.W. Graydon; D.E. Cormack Corrosion of a pipe surface in a channel crevice has been modeled assuming oxygen diffusion through a holiday in a permeable coating. The crevice was thin and narrow with a finite length. The crevice solution pH was 9.2 controlled by ferrous...

...Z. Qingdong A novel electrochemical method was developed to investigate underfilm corrosion of a temporarily protective oil coating. A multiple wire electrode was used to allow electrochemical parameters and their distributions to be measured directly from the coating/metal interface. This made...

...D.-T. Chin; G.M. Sabde Current and potential distributions inside the crevice of a simulated disbonded coating with a holiday during cathodic protection (CP) of steel were measured experimentally in 0.001 M to 0.6 M sodium chloride (NaCl) solutions covering a range of conductivity from 0.012 Ω...

...M.W. Kendig; H.-S. Ryang; T.-L. Liao; S.L. Jeanjaquet An epoxy resin formulation completely free of organic solvent was applied to carbon steel coupons using supercritical carbon dioxide (CO₂) as the volatile solvent. Steel coupons coated in this manner were compared to coupons coated...

...Y. Longa; M. Takemoto Laser glazing of gas flame sprayed NiCrAl, FeNiCrAl, and NiCr alloys was used to produce coatings highly resistant to hot corrosion. Laser irradiation made it possible to glaze the thin surface layers of the sprayed porous coatings. The laser-modified layer of the coating...

...A.A. Sagüés; A.M. Zayed The electrochemical impedance of a system consisting of partially disbonded epoxy-coated reinforcing steel in concrete has been modeled. The system is assumed to incorporate crevices underneath the disbonded coating regions. Before corrosion initiation, the impedance of each...

...A.A. Sagüés; H.M. Perez-Duran; R.G. Powers Corrosion of marine bridge substructures using concrete with epoxy-coated reinforcing steel (ECR) has been observed in Florida Keys' bridges. Experiments have been conducted to determine the extent of corrosion and associated macrocell action in concrete...

... on the coating surface. The ATMEIS has been tested in both immersion exposure and in an atmospheric exposure chamber and has been found to generate EIS data consistent with that predicted for a painted metal coupon in an aggressive environment. Details of the design and testing of this monitor are reported...