Articles
  • Corrosion of Ti3SiC2 in an Ar-1%SO2 atmosphere between 800 and 1100 oC
  • Thuan Dinh Nguyena, Sang-Whan Parkb and Dong-Bok Leea,*
  • a School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Korea b Materials Science and Technology Research Division, KIST, Seoul 136-791, Korea
Abstract
Ti3SiC2 compounds were synthesized by a powder metallurgical route, and corrosion-tested at 800, 900, 1000 and 1100 oC for up to 50 h under an Ar-1%SO2 gas atmosphere. The scale formed consisted primarily of an outer rutile-TiO2 layer and an inner (rutile-TiO2 + amorphous SiO2)-mixed layer. Sulfur was mainly enriched at the scale-matrix interface. The corrosion progressed mainly via oxidation rather than sulfidation. Ti3SiC2 displayed excellent corrosion resistance due mainly to its high Si content that formed a SiO2 barrier layer.

Keywords: Ti3SiC2, Corrosion, Oxidation, Sulfidation.

This Article

  • 2009; 10(3): 355-358

    Published on Jun 30, 2009