Corrosion Science and Technology

  • 제6권3호
  • /
  • Pages.140-146
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  • 2007
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  • 1598-6462(pISSN)
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  • 2288-6524(eISSN)
한국부식방식학회 (The Corrosion Science Society of Korea)
권호 표지

The Effect of Solution Treatment on Intergranular Corrosion Resistance of a New Type Ultra Low Carbon Stainless Steel

  • Julin, Wang (Being University of Chemical Technology) ;
  • Nannan, Ni (Being University of Chemical Technology) ;
  • Qingling, Yan (R&D Center of PetroChina Pipeline Company) ;
  • Lingli, Liu (R&D Center of PetroChina Pipeline Company)
  • 발행 : 2007.06.01
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초록

In the paper, with corrosion velocity measurement and metallographic observation on specimens after sulfuric acid/ferric sulfate boiling experiment, intergranular corrosion tendency of the new type ultra low carbon stainless steel developed by ourselves which experienced solution treatment at different temperatures was evaluated. A VHX 500 super depth field tridimensional microscope was used to observe corrosion patterns on the sample surfaces. The depth and width of grain boundary corrosion groove were measured by the tridimensional microscope, which indicated that the corrosion degrees of the samples which received solution treatment at different temperatures are quite different. Transgranular corrosion at different degree occurred along with forged glide lines. After comparison it was proved that the stainless steel treated at $1100^{\circ}C$ performs very well against intergranular corrosion.

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