Tribological behavior of hafnium diboride thin films Academic Article uri icon


  • Transition metal diborides and their coatings offer an excellent combination of high hardness, high chemical stability and high thermal conductivity, thus they are excellent candidates for a wide range of tribological applications. In this work, stoichiometric hafnium diboride films were grown by chemical vapor deposition from a single-source, heteroatom-free precursor Hf(BH4)4 under conditions that afford highly conformal and smooth films. HfB2 films of thickness 0.6m deposited on steel substrates were subjected to pin-on-disk wear testing against a counter face disc of AISI 440C martensitic stainless steel. Based on wear measurements, both as-deposited (X-ray amorphous) and annealed (nanocrystalline) samples showed very high wear resistance compared to uncoated samples. For the annealed samples, SEM analysis indicated the formation of a wear resistant composite body in the wear scar, even at depths far exceeding the film thickness, which appears to dramatically improve wear resistance. No mild-to-severe wear transition was observed which indicates that mild wear occurred throughout the wear test. This ensemble of results, when considered in the light of high contact pressures ( 700MPa) used in the study, makes the HfB2 material potentially attractive for wear-resistant applications. 2006 Elsevier B.V. All rights reserved.

published proceedings


author list (cited authors)

  • Chatterjee, A., Jayaraman, S., Gerbi, J. E., Kumar, N., Abelson, J. R., Bellon, P., Polycarpou, A. A., & Chevalier, J. P.

citation count

  • 21

complete list of authors

  • Chatterjee, A||Jayaraman, S||Gerbi, JE||Kumar, N||Abelson, JR||Bellon, P||Polycarpou, AA||Chevalier, JP

publication date

  • December 2006