Atmospheric Corrosion and Precipitation Runoff From Zinc and Zinc Alloys Surfaces

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The long-term atmospheric corrosion performance of rolled zinc and three thermal-sprayed (TS) zinc materials (Zn, Zn-15Al, and Al-12Zn-0.2In) was characterized by measuring corrosion product concentrations in precipitation runoff at coastal marine and inland sites. Corrosion rates and average zinc concentrations in the runoff were greater at the site having higher annual rainfall. Higher chloride concentrations did not seem to affect either the corrosion rates or the zinc concentrations in the runoff at the coastal site compared to those of the inland site. Zinc runoff concentrations were higher for TS Zn than rolled zinc due to the greater surface area of ... continued below

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391 Kilobytes pages

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Matthes, S.A.; Cramer, S.D.; Bullard, S.J.; Covino, B.S., Jr. & Holcomb, G.R. March 16, 2003.

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The long-term atmospheric corrosion performance of rolled zinc and three thermal-sprayed (TS) zinc materials (Zn, Zn-15Al, and Al-12Zn-0.2In) was characterized by measuring corrosion product concentrations in precipitation runoff at coastal marine and inland sites. Corrosion rates and average zinc concentrations in the runoff were greater at the site having higher annual rainfall. Higher chloride concentrations did not seem to affect either the corrosion rates or the zinc concentrations in the runoff at the coastal site compared to those of the inland site. Zinc runoff concentrations were higher for TS Zn than rolled zinc due to the greater surface area of the thermal-sprayed surface. Average cumulative zinc runoff losses for the two sites were: 64 {micro}mol Zn/L for TS Zn, 37 {micro}mol Zn/L for rolled Zn, 24 {micro}mol Zn/L for TS Zn-15Al, and 1.8 {micro}mol Zn/L for TS Al-12Zn-0.2In. Cumulative zinc runoff losses were directly related both to the precipitation rate and to the availability of Zn in metal surfaces, a consequence of surface roughness and surface chemistry properties of the metal.

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391 Kilobytes pages

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NACE or authors; OSTI as DE00821882

Source

  • Corrosion 2003, San Diego, CA (US), 03/16/2003--03/20/2003; Other Information: Paper No. 3598

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  • Report No.: DOE/ARC-2003-003
  • Office of Scientific & Technical Information Report Number: 821882
  • Archival Resource Key: ark:/67531/metadc787175

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  • March 16, 2003

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  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 8, 2016, 4:02 p.m.

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Matthes, S.A.; Cramer, S.D.; Bullard, S.J.; Covino, B.S., Jr. & Holcomb, G.R. Atmospheric Corrosion and Precipitation Runoff From Zinc and Zinc Alloys Surfaces, article, March 16, 2003; (digital.library.unt.edu/ark:/67531/metadc787175/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.