Ternary (Ti, Al)N thin films were successfully deposited on the surfac
e of pure iron by nitrogen ion beam mixing. The structure of the (Ti,
Al)N films was studied by Auger electron spectroscopy (AES), X-ray pho
toelectron spectroscopy (XPS) and X-ray diffraction analysis. The micr
ohardness measurements showed that the microhardness of (Ti, Al) N thi
n films is higher than that of TiN thin films prepared with the same N
+ ion implantation dose.