Thermal anti-oxidation treatment of CrNi-steels as studied by EXAFS in reflection mode: the influence of monosilane additions in the gas atmosphere of a continuous annealing furnace

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• 作者：D. Lützenkirchen-Hecht (1)
  D. Wulff (2)
  R. Wagner (1)
  R. Frahm (1)
  U. Holl?nder (2)
  H. J. Maier (2)
  
• 刊名：Journal of Materials Science
• 出版年：2014
• 出版时间：August 2014
• 年：2014
• 卷：49
• 期：15
• 页码：5454-5461
• 全文大小：
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• 作者单位：D. Lützenkirchen-Hecht (1)
  D. Wulff (2)
  R. Wagner (1)
  R. Frahm (1)
  U. Holl?nder (2)
  H. J. Maier (2)
  
  1. Fachbereich C–Physik, Bergische Universit?t Wuppertal, Gau?str. 20, 42097, Wuppertal, Germany
  2. Institut für Werkstoffkunde, Leibniz Universit?t Hannover, An der Universit?t 2, 30823, Garbsen, Germany
  
• ISSN：1573-4803

文摘

Surface sensitive, reflection mode EXAFS spectroscopy at the Cr and Fe K-edges was used to study the surfaces of stainless steel (EU alloy grade 1.4301 X5CrNi18-10) after different heat treatments. The thermal treatments were performed in a conveyor belt furnace at temperatures between 600 and 900?°C in different gas atmospheres containing inert carrier gases (N2 or Ar) and different additives such as hydrogen (H2) and monosilane (SiH4). The ex-situ EXAFS results show that the iron and chromium in the steel can only be reduced to a metallic state, if SiH4 was used as a reducing additive for temperatures of 900?°C. Lower temperatures and process atmospheres without silane always result in strongly oxidized steel surfaces.