Densification, characterization and oxidation studies of novel TiB2+EuB6compounds

T.S.R.C. Murthy, J.K. Sonber, B. Vishwanadh, A. Nagaraj, K. Sairam, R.D. Bedse, J.K. Chakravartty

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


TiB2+EuB6 ceramic samples with different EuB6 contents were fabricated using hot -pressing technique. The introduction of EuB6 promoted the sinterability, fracture toughness and oxidation resistance of TiB2. 98.7% TD achieved by adding 2.5% EuB6 to TiB2 by hot pressing at a relatively low temperature of 1750 °C, 35 MPa, 1h. Formation of complete solid solution of TiB2+EuB6 observed for all the samples by XRD, EDS and EBSD. Hardness of all samples is measured in the range of 24–27 GPa ∼50% higher fracture toughness value of 5.2 MPa m1/2 was obtained in the 2.5% EuB6 contained sample compared to monolithic TiB2. Enhancement of oxidation resistance of TiB2 was observed by EuB6 addition due to the formation of EuBO3 and Eu2O3. Oxidized cross section of TiB2+EuB6 sample was measured as 340 μm, which is ∼35% less than that of monolithic TiB2 (520 μm), after oxidation at 1400 °C for 8h.
Original languageEnglish
Pages (from-to)85-95
JournalJournal of Alloys and Compounds
Early online date30 Jan 2016
Publication statusPublished - 15 Jun 2016


  • TiB2
  • EuB6
  • hot-pressing
  • hardness
  • fracture toughness
  • elastic modulus
  • oxidation studies


Dive into the research topics of 'Densification, characterization and oxidation studies of novel TiB2+EuB6compounds'. Together they form a unique fingerprint.

Cite this