Aluminising of steel with a cathodic arc plasma based method

Çelikel T., KAÇAR E., Ürgen M. K.

Transactions of the Institute of Metal Finishing, cilt.97, sa.3, ss.140-145, 2019 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 97 Sayı: 3
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1080/00202967.2019.1600906
  • Dergi Adı: Transactions of the Institute of Metal Finishing
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.140-145
  • Anahtar Kelimeler: AC bias, Aluminising, cathodic arc PVD, diffusion, Fe 3 Al, FeAl, intermetallics, iron aluminides
  • Hakkari Üniversitesi Adresli: Evet

Özet

Steel samples have been aluminised by cathodic arc PVD using Al cathodes and AC bias. The effect of time and temperature on the growth behaviour of iron aluminide phases under the constant flux of Al vapour was investigated. For samples processed at 1000°C for 30 min a layered structure that consisted of FeAl, followed by dual phase regions of metastable Fe 3 Al + FeAl and stable Fe 3 Al + α-Fe was observed. Increase of processing time resulted in the formation of Fe 2 Al 5 . The increase of processing temperature to 1100°C extended the diffusion zone and increased the time for formation of Fe 2 Al 5 . After 90 min processing at 1000°C and 1100°C the presence of Fe 4 Al 13 in the Fe 2 Al 5 phase was determined. It has been observed that the metastable dual phase structures composed of Fe 3 Al and FeAl can be transformed into stable Fe 3 Al by heat treatment at 500°C.