Aluminium magnesium boride: synthesis, sintering and microstructure

Zhilin Xie, Vincent DeLucca, Richard A. Haber, David T. Restrepo, Jacob Todd, Richard G. Blair, Nina Orlovskaya

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


AlMgB14 ceramics were reported as high-hardness materials over a decade ago. While different synthesis routes for processing of AlMgB14 ceramics were reported in the past, however the synthesis routes are still not optimised and present a significant challenge to the manufacturers. In this work six different synthesis routes were explored for the synthesis of AlMgB14 powder. The synthesised compositions were characterised by XRD, where weight fractions of each phase were calculated by Rietveld refinement. The bulk ceramics were sintered using powder with the highest yield (93.2%) of AlMgB14 phase by spark plasma sintering at 1315°C and 50 MPa. Both phase composition and microstructure of the sintered AlMgB14 were characterised by XRD and SEM/EDS, which revealed the existence of AlMgB14, MgAl2O4 and a small amount of unreacted Al. Hardness and indentation fracture resistance of AlMgB14 ceramics were measured to be 26.7 ± 2.2 GPa and 5.59 ± 0.42 MPa m1/2, respectively by Vickers indentation technique.

Original languageAmerican English
Pages (from-to)341-347
Number of pages7
JournalAdvances in Applied Ceramics
Issue number6
StatePublished - Aug 18 2017

ASJC Scopus subject areas

  • Ceramics and Composites
  • Industrial and Manufacturing Engineering


  • Aluminium magnesium boride
  • hardness
  • microstructure
  • spark plasma sintering


Dive into the research topics of 'Aluminium magnesium boride: synthesis, sintering and microstructure'. Together they form a unique fingerprint.

Cite this