Preparation of single phase molybdenum boride

Camurlu H. E.

JOURNAL OF ALLOYS AND COMPOUNDS, vol.509, no.17, pp.5431-5436, 2011 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 509 Issue: 17
  • Publication Date: 2011
  • Doi Number: 10.1016/j.jallcom.2011.02.083
  • Journal Name: JOURNAL OF ALLOYS AND COMPOUNDS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5431-5436
  • Keywords: Solid state reactions, Mechanochemical synthesis, Volume combustion synthesis, Molybdenum borides, MoB, HIGH-TEMPERATURE SYNTHESIS, COMBUSTION SYNTHESIS, DISPLACEMENT-REACTIONS, SYNTHESIS SHS, TIB2, COMPOSITES, POWDER
  • Akdeniz University Affiliated: Yes

Abstract

he formation of MoB through volume combustion synthesis (VCS), and through mechanochemical synthesis (MCS) followed by annealing has been investigated. MoO(3), B(2)O(3) and Mg were used as reactants while MgO and NaCl were introduced as diluents. Products were leached in dilute HCl solution and were subjected to X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) examinations. Mo was the major phase component in the VCS products under all the experimental conditions. Mo(2)B, MoB, MoB(2) and Mo(2)B(5) were found as minor phases. Products of MCS contained a mixture of Mo(2)B, MoB, MoB(2) and Mo. After annealing the MCS product at 1400 degrees C for 3 h, single phase alpha-MoB was obtained. (C) 2011 Elsevier B. V. All rights reserved

The formation of MoB through volume combustion synthesis (VCS), and through mechanochemical synthesis (MCS) followed by annealing has been investigated. MoO3, B2O3 and Mg were used as reactants while MgO and NaCl were introduced as diluents. Products were leached in dilute HCl solution and were subjected to X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM) examinations. Mo was the major phase component in the VCS products under all the experimental conditions. Mo2B, MoB, MoB2 and Mo2B5 were found as minor phases. Products of MCS contained a mixture of Mo2B, MoB, MoB2 and Mo. After annealing the MCS product at 1400 degrees C for 3 h, single phase alpha-MoB was obtained. (C) 2011 Elsevier B. V. All rights reserved.