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Biocorrosion: widespread vulnerability.

In a biocorrosion research survey last year, Daniel Pope and David Duquette of Rensselaer Polytechnic Institute concluded "that every alloy system -- with the possible exception of nickel-chromium and titanium--seems to show at least some [vulnerability] to biocorrosion," Duquette says. They survey was done for the Materials Technology Institute in Columbus, Ohio.

Despite titanium's superior biocorrosion resistance, Pope notes, it isn't much of an alternative to stainless steel, owing to its high cost and relatively poor heat-exchange characteristics. One possible alternativce that's aught Pope's eye is a type of brass called "admiralty" brass. In hopes of verifying its apparent low vulnerability, he and Duquette are planning a survey of fossil-fueled powerplants that have employed the metal.
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Publication:Science News
Date:Jul 20, 1985
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