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Träfflista för sökning "WFRF:(Johansson Jan Erik) ;hsvcat:6"

Sökning: WFRF:(Johansson Jan Erik) > Humaniora

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2.
  • Chiavari, C, et al. (författare)
  • Atmospheric corrosion of historical organ pipes: The influence of environment and materials
  • 2008
  • Ingår i: Corrosion Science. - : Elsevier BV. - 0010-938X. ; 50:9, s. 2444-2455
  • Tidskriftsartikel (refereegranskat)abstract
    • The corrosion of lead-rich pipes in historical organs in different parts of Europe has been investigated. The influence of the environment and the composition and microstructure of the pipe metal was studied. Pipe Corrosion was documented by visual inspection (boroscope). The corrosion attack and the composition and microstructure of the metal were characterized by OM, SEM, XRD, IC and FAAS. It is shown that the degree of corrosion of the pipes is correlated to the concentration of gaseous acetic and formic acid in the organ. The organic acids are emitted by the wood from which the wind system is built. It is also shown that pipe corrosion decreases with increasing tin content in the range 0-4% (wt). Possible conservation strategies are discussed. (c) 2008 Elsevier Ltd. All rights reserved.
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3.
  • Delsing, Lars-Olof, et al. (författare)
  • Litteraturkrönika 2017
  • 2018
  • Ingår i: Arkiv för nordisk filologi. - 0066-7668. ; 133
  • Recension (övrigt vetenskapligt/konstnärligt)abstract
    • Bokanmälningar av olika böcker
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4.
  • Delsing, Lars-Olof, et al. (författare)
  • Litteraturkrönikan 2021
  • 2022
  • Ingår i: Arkiv för nordisk filologi. - 0066-7668. ; 137, s. 145-174
  • Recension (övrigt vetenskapligt/konstnärligt)abstract
    • Anmälningar av diverse böcker
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5.
  • Oertel, CM, et al. (författare)
  • Focused ion beam and electron microscopy analysis of corrosion of lead-tin alloys: Applications to conservation of organ pipes
  • 2008
  • Ingår i: Materials Research Society Symposium Proceedings. - 0272-9172. - 9781558999886 ; 1047, s. 115-125
  • Tidskriftsartikel (refereegranskat)abstract
    • Across Europe, lead-tin alloy organ pipes are suffering from atmospheric corrosion. This deterioration can eventually lead to cracks and holes, preventing the pipes from producing sound. Organ pipes are found in compositions ranging from >99% Pb to >99% Sn. For very lead-rich (>99% Pb) pipes, organic acids emitted from the wood of organ cases have previously been identified as significant corrosive agents. In order to study the role of alloy composition in the susceptibility of pipes to organic acid attack, lead-tin alloys containing 1.2-15 at.% Sn were exposed to acetic acid vapors in laboratory exposure studies. Corrosion rates were monitored gravimetrically, and corrosion product phases were identified using grazing incidence angle X-ray diffraction. In a new method, focused-ion beam (FIB) cross sections were cut through corrosion sites, and SEM and WDX were used to obtain detailed information about the morphology and chemical composition of the corrosion layers. The combination of FIB and SEM has made it possible to obtain depth information about these micron-scale layers, providing insight into the influence of acetic acid on alloys in the 1.2-15 at.% Sn range.
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  • Resultat 1-5 av 5

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