Boronizing of iron aluminide Fe72Al28

Celikyurek İ., BAKSAN B., Torun O., Gurler R.

INTERMETALLICS, cilt.14, sa.2, ss.136-141, 2006 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 2
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.intermet.2005.04.018
  • Dergi Adı: INTERMETALLICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.136-141
  • Anahtar Kelimeler: iron aluminides (based on Fe3Al), diffusion, surface properties, microstructure, BEHAVIOR, CHROMIUM, CARBON
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Boronizing of Fe72Al28 was carried out in a slurry salt bath composed of borax and SiC at temperatures between 900 and 1050 degrees C for different durations starting from 3 h up to 15 h. The microstructures and microhardness of boride layers and intermetallic matrix were analysed. Samples boronized had Fe2B phase or Fe2B plus FeB phases depending on the process temperatures and times, SEM-EDS studies indicated that there was major aluminium migration into the matrix leaving only 3-4 at.% aluminium in the boronized layer, The measured microhardness values of the boronized layers varied from 1014 to 1980 HV and their thickness increased from 13 up to 103 mu m with increasing temperature and processing times. The kinetics of the boronizing reaction have been analysed and the controlling diffusion process determined. (c) 2005 Elsevier Ltd. All rights reserved.