Influence of Mo on the high temperature wear performance of NiCrBSi hardfacings

Dilawary S. A. A., Motallebzadeh A., ATAR E., Çimenoğlu H.

TRIBOLOGY INTERNATIONAL, cilt.127, ss.288-295, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 127
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.triboint.2018.06.022
  • Dergi Adı: TRIBOLOGY INTERNATIONAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.288-295
  • Anahtar Kelimeler: NiCrBSi, Hardfacing, High temperature wear, Oxide-layer, PLASMA TRANSFERRED ARC, COMPOSITE COATINGS, ALLOY COATINGS, SLIDING WEAR, LASER, NICKEL, MOLYBDENUM, BEHAVIOR, MICROSTRUCTURE, TECHNOLOGIES
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

This study investigates the effect of 10 wt% Mo alloying of NiCrBSi hardfacing on the microstructure and dry sliding wear performance at room temperature and elevated temperatures up to 700 degrees C. Mo additions refined the boride and carbide phases in the microstructure and formed a Mo-rich boro-carbide along with a 20% drop in its hardness. It further improved the wear resistance at all tested temperatures due to the formation of Mo oxides on the worn surfaces.