A kind of alticrn high temperature wear-resistant coating and preparation method thereof

A high-temperature wear-resistant and wear-resistant layer technology, used in coatings, metal material coating processes, vacuum evaporation plating, etc., can solve the problems of discharge stability, controllability to be improved, and low HIPIMS deposition rate. Excellent high temperature friction and wear resistance, strong bonding force and high hardness

Active Publication Date: 2018-12-28
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, compared with the traditional DC magnetron sputtering and multi-arc ion plating technology, HIPIMS still has the disadvantages of low deposition rate, discharge stability and controllability.

Method used

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  • A kind of alticrn high temperature wear-resistant coating and preparation method thereof
  • A kind of alticrn high temperature wear-resistant coating and preparation method thereof
  • A kind of alticrn high temperature wear-resistant coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of AlTiCrN high temperature wear-resistant coating, described coating is made of AlTi binding layer 2, AlTiN transition layer 3 and AlTiCrN main wear-resistant layer 4, as figure 1; The AlTi bonding layer 2 is attached to the cemented carbide 1 with a thickness of 0.1 nanometer and a composition of Al50at.% and Ti 50at.%; an AlTiN transition layer 3 is attached to the AlTi bonding layer 2 with a thickness of 0.5 microns and a composition of Al25at. %, Ti 15at.%, N 60at.%; the AlTiCrN main wear-resistant layer 4 is attached to the AlTiN transition layer 3, the thickness is 1 micron, and the composition is Al 30at.%, Ti 20at.%, Cr 1at.%, N 49at .%.

[0029] A preparation method of the AlTiCrN high-performance high-temperature wear-resistant coating is as follows:

[0030] Clamp the cleaned cemented carbide 1 on the workpiece rack and start vacuuming. When the vacuum degree reaches 1×10 ～3 At Pa, start heating and degassing, and the temperature is controlled at 30...

Embodiment 2

[0033] A kind of AlTiCrN high temperature wear-resistant coating, described coating is made of AlTi binding layer 2, AlTiN transition layer 3 and AlTiCrN main wear-resistant layer 4, as figure 1 ; The AlTi bonding layer 2 is attached to the cemented carbide 1 with a thickness of 0.5 nanometers and a composition of Al60at.% and Ti 40at.%; an AlTiN transition layer 3 is attached to the AlTi bonding layer 2 with a thickness of 1 micron and a composition of Al30at. %, Ti 20at.%, N 50at.%; the AlTiCrN main wear-resistant layer 4 is attached to the AlTiN transition layer 3, the thickness is 2 microns, and the composition is Al 16at.%, Ti 14at.%, Cr 10at.%, N 60at .%.

[0034] A preparation method of the AlTiCrN high-performance high-temperature wear-resistant coating is as follows:

[0035] Clamp the cleaned cemented carbide 1 on the workpiece rack and start vacuuming. When the vacuum reaches 3×10 ～3 At Pa, start heating and degassing, and the temperature is controlled at 400°C. ...

Embodiment 3

[0038] A kind of AlTiCrN high temperature wear-resistant coating, described coating is made of AlTi binding layer 2, AlTiN transition layer 3 and AlTiCrN main wear-resistant layer 4, as figure 2 ; The AlTi bonding layer 2 is attached to the cemented carbide 1, the thickness is 1 micron, and the composition is Al 67 at.%, Ti 33 at. %; the AlTiN transition layer 3 is attached to the AlTi bonding layer 2, the thickness is 2 microns, and the composition is Al 35at.%, Ti25at.%, N 40at.%; AlTiCrN main wear-resistant layer 4 is attached to the AlTiN transition layer 3, the thickness is 3 microns, the composition is Al10at.%, Ti 10at.%, Cr 30at.%, N 50at .%.

[0039] A preparation method of the AlTiCrN high-performance high-temperature wear-resistant coating is as follows:

[0040] Clamp the cleaned cemented carbide 1 on the workpiece rack and start vacuuming. When the vacuum degree reaches 5×10 ～3 At Pa, start heating and degassing, and the temperature is controlled at 500°C. The...

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Abstract

The invention provides an AlTiCrN high-temperature wear-resistant coating and a preparation method thereof, which belong to the technical field of vacuum. The coating structurally comprises an AlTi binding layer, an AlTiN transition layer and an AlTiCrN main wear-resistant layer, wherein the binding layer is attached to hard alloy, the thickness is 0.0001 to 1 micron, and the binding layer is prepared from 50 to 67at.% of Al and 33 to 50at.% of Ti; the transition layer is attached to the binding layer, the thickness is 0.5 to 2 microns, and the transition layer is prepared from 25 to 35at.% of Al, 15 to 25at.% of Ti and 40 to 60at.% of N; the main wear-resistant layer is attached to the transition layer, the thickness is 1 to 3 microns, and the main wear-resistant layer is prepared from 10 to 30at.% of Al, 10 to 20at.% of Ti, 1 to 30at.% of Cr and 49 to 60at.% of N; the binding layer and the transition layer are prepared by adopting a high-power pulse magnetron sputtering technique; the main wear-resistant layer is prepared by adopting a high-power and direct-current pulse magnetron sputtering composite coating technique. The AlTiCrN coating has the advantages of high hardness, low friction coefficient, low internal stress, high bonding strength, good high-temperature stability and high high-temperature friction and wear resistance, parts with the coating are suitable for high friction and wear occasions, and the service life of the parts can be greatly prolonged.

Description

technical field [0001] The invention relates to an AlTiCrN high-temperature wear-resistant coating and a preparation method thereof, belonging to the field of vacuum technology. Background technique [0002] With modern manufacturing's requirements for high efficiency, high quality, and green cutting of materials, the cutting conditions of difficult-to-machine materials (such as hardened steel) are becoming more and more stringent. At the same time, it also promotes the continuous development of tool coating materials and coating technology to improve the coating quality to meet the increasingly demanding needs. There are two main ways to improve the performance of tool coatings: one is to add new chemical elements to the coating, and the other is to optimize the parameters of coating technology and deposition. [0003] TiAlN and AlTiN are physical vapor deposition (PVD) tool coatings formed by depositing Al elements into TiN. So far, enhancing the high temperature resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/16C23C14/06C23C14/02
CPCC23C14/0036C23C14/022C23C14/0641C23C14/165C23C14/35
Inventor 周晖郑军王启民贵宾华杨拉毛草耿东森
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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