Production of Mo2NiB2 Based Hard Alloys by Self-Propagating High-Temperature Synthesis

Moghaddam S. R., Derin B., Yücel O., Sönmez M. Ş., SEZEN M., BAKAN F., ...Daha Fazla

HIGH TEMPERATURE MATERIALS AND PROCESSES, cilt.38, ss.683-691, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1515/htmp-2019-0020
  • Dergi Adı: HIGH TEMPERATURE MATERIALS AND PROCESSES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.683-691
  • Anahtar Kelimeler: Hard materials, Mo2NiB2, SHS, XRD, SEM, CERMETS, CR
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Mo-Ni-B-Al as-cast alloys containing 35.5-58.7 wt% Mo, 23.0-57.6 wt% Ni, 3.3-5.2 wt% B, and 2.2-13.5 wt% Al were synthesized by Self-Propagating High-Temperature Synthesis (SHS) using a mixture of MoO3, NiO, B2O3 and Al powders in order to obtain low-cost Mo2NiB2 containing hard materials. The first series of experiments were performed using 1.05 times the stoichiometric amount of Al. In the second series of experiments, FactSage thermochemical modeling software was used to minimize Al increasing the Mo2NiB2 formation in the as-cast alloys. The products were characterized by using atomic absorption spectrometry (AAS), X-ray diffraction (XRD), scanning electron microscopy (SEM) and micro-hardness techniques.