Hauptseite > Publikationsdatenbank > Korrosion von PCA durch Metalljodidschmelzen sowie deren Benetzungseigenschaften > print

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020 _ _ |a 978-3-89336-584-5
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037 _ _ |a PreJuSER-5438
041 _ _ |a German
100 1 _ |0 P:(DE-Juel1)VDB69499
|a Fischer, Sarah Christine
|b 0
|e Corresponding author
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|u FZJ
245 _ _ |a Korrosion von PCA durch Metalljodidschmelzen sowie deren Benetzungseigenschaften
260 _ _ |a Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
|c 2009
300 _ _ |a 148 S.
336 7 _ |0 PUB:(DE-HGF)11
|2 PUB:(DE-HGF)
|a Dissertation / PhD Thesis
336 7 _ |0 PUB:(DE-HGF)3
|2 PUB:(DE-HGF)
|a Book
336 7 _ |0 2
|2 EndNote
|a Thesis
336 7 _ |2 DRIVER
|a doctoralThesis
336 7 _ |2 BibTeX
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336 7 _ |2 DataCite
|a Output Types/Dissertation
336 7 _ |2 ORCID
|a DISSERTATION
490 0 _ |0 PERI:(DE-600)2445288-9
|a Schriften des Forschungszentrums Jülich : Energie & Umwelt / Energy & Environment
|v 44
|x 1866-1793
500 _ _ |a Record converted from VDB: 12.11.2012
502 _ _ |a RWTH Aachen, Diss., 2009
|b Dr. (Univ.)
|c RWTH Aachen
|d 2009
520 _ _ |a On high-energy discharge lamps with burners consisting of polycrystalline aluminum oxide (PCA) corrosion leads to relocation of the wall material; the extent of the phenomenon depends on the composition and the wetting behaviour of the liquid salt mixture contained in the lamp. The aim of this work was to better comprehend these phenomena. For this the wetting behaviours of several iodides on PCA- and carbon plates in a water-free argon atmosphere was determined in a contact angle measurement apparatus. While pure salts show good or, at high temperatures, complete wetting, the surface wetting of binary salt mixtures is positively worse, even if only small amounts of the second component are present. From the contact angle measurements the surface tension of the pure salts could be determined. By combining the YOUNG-LAPLACE-Equation with the BUTLER-Equation, the excess GIBBS energy could be related to the contact angles of salt mixtures, which makes the estimation of their wetting properties possible. The extent of the corrosion was determined by annealing experiments in a temperature gradient. No corrosion was found in reference experiments without any salt. In addition to diverse corrosion phenomena the formation of cerium aluminate was observed in some cases. All these effects could also be reproduced by computer simulations, for which a special program was developed. This program may lead to the development of advanced software in the future which can calculate the shape and corrosivity of lamp-relevant salt melts.
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|a Rationelle Energieumwandlung
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913 1 _ |0 G:(DE-Juel1)FUEK402
|b Energie
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914 1 _ |y 2009
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|d 30.09.2010
|g IEF
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|l Werkstoffstruktur und Eigenschaften
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