Surface modification of ferritic stainless steel by laser alloying

Wen Ta Tsai, Cheng Hung Shieh, Ju Tung Lee

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

Laser surface alloying (LSA) of AISI 430 stainless steel (SS) with silicon nitride was investigated. Energy dispersive spectroscopy showed that the silicon content in the LSA layer varied with processing conditions and changed slightly with the thickness within the LSA layer. A surface alloying layer with a silicon content as high as 20 wt.% could be produced. Both Auger electron spectroscopy and wavelength dispersive spectroscopy also revealed a slight alloying of nitrogen, oxygen and carbon in the surface layer. The hardness in the LSA layer, which was found to be a strong function of silicon content, could reach as high as 1100 Hv. Potentiodynamic polarization curves obtained in neutral 3.5 wt.% NaCl solution showed that the passive region greatly expanded and the pitting initiation potential was shifted approximately 460 mV towards the noble direction for the LSA layer with 10 wt.% Si as compared with those of the 430 SS.

原文English
頁(從 - 到)79-84
頁數6
期刊Thin Solid Films
247
發行號1
DOIs
出版狀態Published - 1994 七月 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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