To further investigate the formation of amorphous ZrO2 and B2O3 during the high-energy ball-milling of ZrB2 in air,
FTIR and Raman spectroscopy studies were conducted with the aim of detecting the vibration bands of the Zr–O and B–O bonds.
Shown in Figs. 6 and 7 are, respectively, the FTIR and Raman spectra of the as-purchased and ball-milled ZrB2 powders,
together with the spectra of ZrO2 and B2O3 powders that were also collected experimentally and included for comparison.
As can be seen in Fig. 6, not only are the FTIR spectra from the two ZrB2 powders similar,