The major peaks appearing in the FTIR spectra of alumina zirconia hydroxide system could be related to the following:
(1) –OH stretching vibration of the surface bonded or adsorbed water;
(2) –OH bending vibration of the surface bonded or adsorbed water;
(3) –OH stretching vibration of structural water, corresponding to M–OH bonding;
(4) –OH bending vibration of structural water, corresponding to M–OH bonding;
(5) Al–O stretching vibration;
(6) Zr–O stretching vibration.