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CN-121992341-A - Ice skates TiN composite coating and preparation method thereof

CN121992341ACN 121992341 ACN121992341 ACN 121992341ACN-121992341-A

Abstract

The invention belongs to the field of hard coatings, in particular to a skates TiN composite coating and a preparation method thereof, wherein the skates TiN composite coating comprises a titanium priming layer, a heat conduction regulating layer and an ice dust rejection layer which are sequentially arranged from inside to outside, the heat conduction regulating layer is of a columnar crystal TiN structure doped with rare earth elements, and has the characteristics that when the interface temperature is less than or equal to-25 ℃ and less than 0 ℃, the heat conductivity is 3-8W/mK, when the interface temperature is more than or equal to 0 ℃ and the shearing stress is less than or equal to 1.0GPa, the columnar crystal maintains the initial orientation, the heat conductivity is 8-12W/mK, when the interface temperature is more than or equal to 0 ℃ and the shearing stress is 1.0-2.0GPa, the columnar crystal undergoes orientation rearrangement under the action of shearing force, and the heat conductivity is 22-30W/mK. The heat conduction regulating layer can quickly generate a water film at low temperature and quickly dissipate heat at high temperature and high shearing force, so that the water film is prevented from being too thick. The ice dust rejection layer can actively promote the ice dust to be separated from the skates rapidly, so that the sand paper effect generated by ice dust accumulation is solved.

Inventors

  • WANG JIN
  • GU WEIFENG
  • YANG XIAOLEI
  • WANG ER

Assignees

  • 成都体育学院

Dates

Publication Date
20260508
Application Date
20260408

Claims (10)

  1. 1. The ice skate TiN composite coating is characterized by comprising a titanium priming layer (1), a heat conduction regulating layer (2) and an ice dust rejection layer (3) which are sequentially arranged from inside to outside; the heat conduction regulating layer (2) is of a columnar crystal TiN structure doped with rare earth elements, and the heat conduction regulating layer (2) has the following characteristics: when the interface temperature is less than or equal to minus 25 ℃ and less than 0 ℃, the thermal conductivity is 3-8W/mK; when the interface temperature is more than or equal to 0 ℃ and the shear stress is less than 1.0GPa, the columnar crystal maintains the initial orientation, and the thermal conductivity is 8-12W/mK; When the interface temperature is more than or equal to 0 ℃ and the shear stress is 1.0-2.0GPa, the columnar crystals are subjected to orientation rearrangement under the action of the shear force, and the thermal conductivity is 22-30W/mK.
  2. 2. The ice blade TiN composite coating of claim 1, wherein the rare earth element is lanthanum or cerium and the rare earth content is 1at% to 3at%.
  3. 3. The skates TiN composite coating according to claim 1, wherein the skates chip-repellent layer (3) comprises an amorphous carbon-based thin film (31), a ferroelectric material layer (32) doped with HfO 2 or AlScN, and a polytetrafluoroethylene nanofiber array layer (33) sequentially arranged from inside to outside.
  4. 4. The skates TiN composite coating according to claim 3, wherein the fibers of the polytetrafluoroethylene nanofiber array layer (33) are oriented vertically or obliquely, the array porosity is 60% -85%, and the surfaces of the fibers are formed into a nanoscale corrugated structure by plasma etching.
  5. 5. The ice blade TiN composite coating according to claim 3, wherein the thickness of the amorphous carbon-based film (31) is 1.5-3.0 μm, the thickness of the ferroelectric material layer (32) is 50-200nm, the individual fiber diameter of the polytetrafluoroethylene nanofiber array layer (33) is 100-500nm, the fiber length is 1-5 μm, and the overall thickness of the array layer is 2-10 μm.
  6. 6. The ice blade TiN composite coating according to claim 1, wherein the thickness of the titanium primer layer (1) is 0.1-0.3 μm and the thickness of the heat conduction control layer (2) is 2-5 μm.
  7. 7. The method for preparing the ice skate TiN composite coating of claim 1, comprising the steps of: S1, preprocessing an ice skate substrate (10); s2, depositing a titanium priming layer (1) on the skates substrate (10) through a magnetron sputtering process; S3, depositing a heat conduction regulating layer (2) by adopting a multi-arc ion plating process, wherein the target material is a Ti-La alloy target, nitrogen is introduced, the deposition temperature is 450-550 ℃, the bias voltage is-150-200V, and a columnar crystal TiN structure doped with rare earth elements is deposited; S4, depositing an ice dust rejection layer (3).
  8. 8. The method for preparing the ice skate TiN composite coating of claim 7 wherein step S4 comprises: s41, depositing an amorphous carbon-based film (31) on the heat conduction regulating layer (2) by adopting high-power pulse magnetron sputtering; S42, adopting atomic layer deposition or radio frequency magnetron sputtering to deposit a ferroelectric material layer (32) doped with HfO 2 or AlScN on the amorphous carbon-based film (31); S43, constructing a polytetrafluoroethylene nanofiber array layer (33) on the surface of the ferroelectric material layer (32) by adopting electrostatic spinning and electric field orientation technology, and forming a nanoscale fold structure by plasma etching.
  9. 9. The method for preparing the ice skate TiN composite coating according to claim 7, wherein in the step S3, the La content in the Ti-La alloy target is 1-3at%, the nitrogen partial pressure in the deposition process is 1.0-2.0Pa, and the deposition time is 50-90 minutes.
  10. 10. The method for preparing a TiN composite coating for skates according to claim 7, wherein the step S1 comprises mirror polishing the skates substrate (10), followed by ion etching cleaning in a vacuum furnace to remove the surface oxide layer and activate the surface.

Description

Ice skates TiN composite coating and preparation method thereof Technical Field The invention belongs to the field of hard coatings, and particularly relates to a skates TiN composite coating and a preparation method thereof. Background In order to increase the wear resistance of the blade of the skates and reduce the sliding resistance, it is often necessary to provide the blade with a wear resistant coating. The traditional wear-resistant coating can refer to the prior art of a drag reduction composite coating process for the surface of the skates, the skates disclosed in the invention application with the application number of CN202110504404.4, a preparation method thereof, skates and the like disclosed in the invention with the application number of CN 202310248190.8. The traditional thinking is to increase the hardness of the blade of the skates by increasing the hardness of the wear-resistant material and reducing the friction coefficient, and the sliding resistance is reduced, so that the effect is limited due to the performance of the material. The invention application with the application number of CN201910280681.4 discloses a novel skates drag reduction technology and a realization method thereof, which are characterized in that the surface modification treatment is carried out on a skates substrate, so that the heat conduction coefficient of the skates and the heat loss caused by the conduction of friction heat to the skates substrate are obviously reduced, the heat flow distribution coefficient of the friction heat to the ice surface conduction is improved, more friction heat is used for melting the ice surface to increase the thickness of a water lubrication film, the water-based lubrication drag reduction is realized, the friction coefficient of the ice surface is greatly reduced, and the tribological performance of the skates is improved. However, the technology has the following problems that when the ice skates continuously slide and the sliding speed is high, the friction heat generation amount is high, the ice melting speed is too high, the thickness of a water film formed between the ice skates and the ice surface is too large, the sucking disc adsorption effect and the viscous resistance of the water film are further increased, and the sliding resistance is obviously increased. In addition, when the blade of the skates cuts the ice surface, a large amount of tiny ice scraps can be generated, if the ice scraps can not be separated from the skates in time, sand paper effect can be formed by accumulation on two sides of the blade, and additional resistance is caused by scraping the ice surface. Disclosure of Invention The invention aims to solve the technical problem of providing the ice blade TiN composite coating and the preparation method thereof, which can prevent the water film from being too thick, promote the ice scraps to be quickly separated, and reduce the sliding resistance. In order to solve the problems, the technical scheme adopted by the invention is that the ice blade TiN composite coating comprises a titanium priming layer, a heat conduction regulating layer and an ice dust rejection layer which are sequentially arranged from inside to outside; the heat conduction regulating layer is of a columnar crystal TiN structure doped with rare earth elements, and has the following characteristics: when the interface temperature is less than or equal to minus 25 ℃ and less than 0 ℃, the thermal conductivity is 3-8W/mK; when the interface temperature is more than or equal to 0 ℃ and the shear stress is less than 1.0GPa, the columnar crystal maintains the initial orientation, and the thermal conductivity is 8-12W/mK; When the interface temperature is more than or equal to 0 ℃ and the shear stress is 1.0-2.0GPa, the columnar crystals are subjected to orientation rearrangement under the action of the shear force, and the thermal conductivity is 22-30W/mK. Further, the rare earth element is lanthanum or cerium, and the rare earth content is 1at% to 3at%. Further, the ice dust repelling layer comprises an amorphous carbon-based film, a ferroelectric material layer doped with HfO 2 or AlScN and a polytetrafluoroethylene nanofiber array layer which are sequentially arranged from inside to outside. Further, the fibers of the polytetrafluoroethylene nanofiber array layer are vertically or obliquely oriented, the array porosity is 60% -85%, and the surfaces of the fibers form a nanoscale fold structure through plasma etching. Further, the thickness of the amorphous carbon-based film is 1.5-3.0 mu m, the thickness of the ferroelectric material layer is 50-200nm, the diameter of individual fibers of the polytetrafluoroethylene nanofiber array layer is 100-500nm, the fiber length is 1-5 mu m, and the overall thickness of the array layer is 2-10 mu m. Further, the thickness of the titanium priming layer is 0.1-0.3 μm, and the thickness of the heat conduction regulating layer is 2-5 μm. The prepar