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Title: Evaluating the corrosiveness of southern pine treated with several wood preservatives using electrochemical techniques

Author: Zelinka, Samuel L.; Rammer, Douglas R.; Stone, Donald S.;

Date: 2009

Source: Corrosion 2009 : [electronic resource] : conference papers on cd-rom, March 22-26, 2009, Atlanta, Georgia, U.S.A. Houston, TX : NACE International ; [S.l.] : Omnipress (producers), c2009: 11 p.: Paper no. 09172.

Publication Series: Miscellaneous Publication

Description: Chromated copper arsenate (CCA), the most widely used wood preservative of the past 50 years, has been replaced for most uses with alkaline-copper systems such as alkaline copper quaternary (ACQ), copper azole (CuAz) and micronized copper quaternary (MCQ). Preliminary research using high-temperature, high-humidity environments have shown that some of these wood preservatives are more corrosive than CCA, although it is unclear how the results of these extreme tests correlate to performance at temperatures and humidities seen in-service. Recently, the authors developed an electrochemical method for rapid determination of the corrosion rate for fasteners in water extracts of treated wood. The authors have previously demonstrated good correlation between the electrochemical-extract test and exposure tests of fasteners in ACQ treated Southern pine. This work uses the electrochemical-extract method to examine corrosion of carbon steel and galvanized steel on untreated southern pine, as well as southern pine treated with five different wood preservatives.

Keywords: Wood, polarization resistance, steel, galvanized steel, alkaline copper quaternary, ACQ, chromated copper arsenate, CCA, metals, testing, corrosion, anti-corrosives, fasteners, joints, wood preservatives, electrochemical analysis, stainless steel, electric measurements, plant extracts, accelerated life testing, temperature, humidity, polorization, southern pine, preservative treated wood, treated wood, connectors, preservatives, copper azole, exposure tests, electric properties, wood extractives, accelerated testing, CuAz, micronized copper quaternary, MCQ, alkyl ammonium compound, DDAC

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Zelinka, Samuel L.; Rammer, Douglas R.; Stone, Donald S. 2009. Evaluating the corrosiveness of southern pine treated with several wood preservatives using electrochemical techniques. Corrosion 2009 : [electronic resource] : conference papers on cd-rom, March 22-26, 2009, Atlanta, Georgia, U.S.A. Houston, TX : NACE International ; [S.l.] : Omnipress (producers), c2009: 11 p.: Paper no. 09172.

 


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