filiform corrosion

filiform corrosion

[′fil·ə‚fȯrm kə′rō·zhən]
(metallurgy)
A random threadlike deterioration of a painted or lacquered metal caused by superficial corrosion of the base metal.
References in periodicals archive ?
In general terms, the benefits of pre-anodising is the virtual elimination of filiform corrosion from cut edges, the downside is that powder coating has to be completed in a very short time after pre-anodising, making it necessary to pre-anodise in the same premises where the coating takes place.
Assessment of degree of blistering, rusting and cracking was done by time to time according to standard ISO 4628 (Part 2, 3, 4) [13] while the degree of filiform corrosion was assessed by ISO 4628 (Part 10) [13] at the end of exposure.
The recommended anticorrosive primer from Company A was used as the primer for both topcoats in the salt spray and filiform corrosion tests, following the procedure in MIL-PRF-23377K.
The common corrosion types are mainly galvanic corrosion, pitting corrosion, filiform corrosion and stress corrosion of these.
Romano, A-P, Fedel, M, Deflorian, F, Olivier, M-G, "Silane Sol-Gel Film as Pretreatment for Improvement of Barrier Properties and Filiform Corrosion Resistance of 6016 Aluminium Alloy Covered by Cataphoretic Coating.
Although filiform corrosion is usually observed on organic-coated aluminum parts, (299-301) it has also been observed on magnesium and cold-rolled steel.
In salt spray and filiform corrosion testing, metal surfaces protected by new Desoprime HS CA 7502 high-solids exterior epoxy primer showed the same corrosion resistance as those coated with chromated primers," Schoeder said.
Classification of surface damages on sample, such as gravel impact, cross hatch, filiform corrosion and delamination is done in accordance with standards or the customer's specifications.
The classification of surface damages on the sample, such as gravel impact, cross hatch, filiform corrosion and delamination, is done in accordance with standards or customer specifications used for visual evaluation.
This ensures the very best protection against corrosion and eliminates the possibility of filiform corrosion occurring from cut and machined edges of the aluminium.
Assessment of degree of blistering, rusting and cracking was done according to standard ISO 4628 (Part 2, 3, 4) [32] from time to time while the degree of filiform corrosion was assessed by ISO 4628 (Part 10) [32] at the end of exposure.