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Träfflista för sökning "WFRF:(Hultquist Gunnar) srt2:(2010-2014)"

Search: WFRF:(Hultquist Gunnar) > (2010-2014)

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1.
  • Hultquist, Gunnar, et al. (author)
  • Corrosion of copper in distilled water without molecular oxygen and the detection of produced hydrogen
  • 2013
  • Reports (other academic/artistic)abstract
    • This paper reports on hydrogen pressures measured during the longterm immersion (~19 000 hours) of copper in oxygen-free distilled water. Hydrogen gas evolution is from copper corrosion and similar pressures (in the mbar range) are measured for copper contained in either a 316 stainless steel or titanium system. Copper corrosion products have been examined ex-situ by SEM and characterized by Xray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS). XPS strongly indicates a corrosion product containing both hydroxide and oxide. SIMS shows that oxygen is mainly present in the outer 0.3 um surface region and that hydrogen penetrates to depths in the substrate well below the corrosion product.
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2.
  • Hultquist, Gunnar, et al. (author)
  • Hydrogen gas production during corrosion of copper by water
  • 2011
  • In: Corrosion Science. - : Elsevier BV. - 0010-938X .- 1879-0496. ; 53:1, s. 310-319
  • Journal article (peer-reviewed)abstract
    • This paper considers the corrosion of copper in water by (1) short term open system weight measurements and (2) long term closed system immersion in distilled water (13 800 h) without O-2 at 21-55 degrees C In the latter experiments the hydrogen gas pressure is measured above the immersed copper and approaches similar to 10(-3) bar at equilibrium This pressure is mostly due to copper corrosion and greatly exceeds that in ambient air Accordingly this measured hydrogen pressure from copper corrosion increases with temperature and has the same dependency as the concentration of OH- in the ion product [OH-] [H+].
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