The invention belongs to the field of hard coatings, and particularly relates to an ice skate blade
TiN composite coating and a preparation method thereof.The ice skate blade
TiN composite coating comprises a
titanium bottoming layer, a heat conduction regulation and
control layer and an ice
scrap repelling layer which are sequentially arranged from inside to outside; the heat conduction regulation and
control layer is of a columnar
crystal TiN structure doped with
rare earth elements and has the following characteristics that when the interface temperature is larger than or equal to-25 DEG C and smaller than 0 DEG C, the heat
conductivity ranges from 3 W / mK to 8 W / mK; when the interface temperature is greater than or equal to 0 DEG C and the
shear stress is less than 1.0 GPa, the columnar
crystal maintains the initial orientation, and the
thermal conductivity is 8-12W / mK; when the interface temperature is greater than or equal to 0 DEG C and the
shear stress is 1.0-2.0 GPa, the columnar
crystal is subjected to orientation rearrangement under the action of
shear force, and the
thermal conductivity is 22-30W / mK. The heat conduction regulation and
control layer can rapidly generate a water film at low temperature and rapidly dissipate heat at high temperature and high
shear force, so that the water film is prevented from being too thick. The ice
scrap repelling layer can actively promote the ice scraps to be quickly separated from the ice skate blade, and the
abrasive paper effect generated by ice
scrap accumulation is avoided.