crevice corrosion


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crevice corrosion

[′krev·əs kə′rō·zhən]
(metallurgy)
Corrosive degradation of metal parts at the crevices left at rolled joints or from other forming procedures; common in stainless steel heat exchangers in contact with chloride-containing fluids or other dissolved corrosives. Also known as contact corrosion.
References in periodicals archive ?
Clock Springs use two full encirclement wraps of a unidirectional fiberglass composite that are bonded to the pipe with a patented adhesive to eliminate crevice corrosion and abrasive wear at pipe supports.
He agreed that a March 1969 report from Westinghouse's crevice corrosion committee indicated that temperatures allowing greater heat in the generator crevices could produce catastrophic rapid failure of the tubes and that Westinghouse needed to establish a policy to deal with that problem.
Clock Spring uses two full encirclement wraps of a fiberglass composite bonded to the pipe with a patented adhesive that eliminates crevice corrosion and pipe wear at pipe supports for any size diameter pipeline up to 56".
A: Aquawrap Composites can be installed on straight pipe, elbows, tees, offshore risers, underwater, flange reducers, and used on saddle repairs for crevice corrosion and dent gouges.
In a June 3, 1968, letter to the manager of Westinghouse's Pressurized Water Reactor Division, Thorn wrote that increasing temperature was an important element to consider in crevice corrosion of Inconel.
However during continuous loading in aggressive biological environment, they are susceptible to pitting and crevice corrosion.
He testified about a series of internal and confidential reports and memos involving the Westinghouse Crevice Corrosion Committee's review of the cracking and corrosion problems in Inconel tubing in the nuclear stem generators.
He testified that he provided information for a Westinghouse Crevice Corrosion Subcommittee report 20 years earlier in 1968, in which it was noted that "there is concern that, at a threshold temperature, corrosion occurs at a dramatically increased rate.
An exploration and production company in the Middle East recently discovered pitting corrosion, crevice corrosion and atmospheric corrosion on their 10-inch export line and selected Clock Spring[R] technology for a fast, convenient and cost-effective repair.
Titanium and its alloys are resistant to pitting, crevice corrosion and general corrosion and are suitable for use in cooling water systems in a wide range of clean and polluted waters.
However, the stainless steels are susceptible to pitting and crevice corrosion.
While there is some evidence that CP current may distribute through the casing and electrolyte, there are possible corrosion mechanisms, including electrical shielding and crevice corrosion, associated with nonmetallic casing spacers.