Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-entropy nitride coating for aviation bearing surface protection and preparation method thereof

A technology of bearing surface and nitride, which is applied in the direction of coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems of single element and inability to fully exert the synergistic effect of multiple elements

Active Publication Date: 2021-05-07
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the single element used in most studies cannot give full play to the synergistic effect of multiple elements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-entropy nitride coating for aviation bearing surface protection and preparation method thereof
  • High-entropy nitride coating for aviation bearing surface protection and preparation method thereof
  • High-entropy nitride coating for aviation bearing surface protection and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 A high-entropy nitride coating for aircraft bearing surface protection, the high-entropy nitride coating is (CrAlTiNbV)N x , x=0.3; the elements contained in it are calculated by atomic percentage: Cr is 30 at. %, Al is 15 at. %, Ti is 3 at. %, Nb is 7 at. %, V is 15 at. %, N 30 at. %.

[0036] Its preparation method:

[0037] ⑴Use absolute ethanol and acetone to ultrasonically clean the steel sample for 15 minutes, dry the sample and put it in a vacuum chamber for vacuuming;

[0038] ⑵When the vacuum degree is lower than 3×10 -3 The coating work was started at Pa; argon gas was introduced, and the argon content was fixed at 18 sccm during the preparation process, and the internal pressure of the vacuum chamber was 0.24 Pa. A pulse bias power supply was added to the sample, and at a bias voltage of -450 V Use argon plasma to pre-sputter and clean the sample for 20-30 minutes to remove the oxide layer and other impurities on the surface;

[0039] (3) Keep ...

Embodiment 2

[0042] Example 2 A high-entropy nitride coating for aircraft bearing surface protection, the high-entropy nitride coating is (CrAlTiNbV)N x , x=0.35; the elements contained in it are calculated by atomic percentage: Cr is 20 at. %, Al is 15 at. %, Ti is 10 at. %, Nb is 10 at. %, V is 10 at. %, N is 35 at. %.

[0043] Its preparation method::

[0044] ⑴Use absolute ethanol and acetone to ultrasonically clean the steel sample for 15 minutes, dry the sample and put it in a vacuum chamber for vacuuming;

[0045] ⑵When the vacuum degree is lower than 3×10 -3 The coating work was started at Pa; argon gas was introduced, and the argon content was fixed at 18 sccm during the preparation process, and the internal pressure of the vacuum chamber was 0.24 Pa. A pulse bias power supply was added to the sample, and at a bias voltage of -450 V Use argon plasma to pre-sputter and clean the sample for 20-30 minutes to remove the oxide layer and other impurities on the surface;

[0046] (3...

Embodiment 3

[0049] Example 3 A high-entropy nitride coating for aircraft bearing surface protection, the high-entropy nitride coating is (CrAlTiNbV)N x , x=0.45; the elements contained in it are calculated by atomic percentage: Cr is 15 at. %, Al is 10 at. %, Ti is 10 at. %, Nb is 5 at. %, V is 15 at. %, N is 45 at. %.

[0050] Its preparation method:

[0051] ⑴Use absolute ethanol and acetone to ultrasonically clean the steel sample for 15 minutes, dry the sample and put it in a vacuum chamber for vacuuming;

[0052] ⑵When the vacuum degree is lower than 3×10 -3 The coating work was started at Pa; argon gas was introduced, and the argon content was fixed at 18 sccm during the preparation process, and the internal pressure of the vacuum chamber was 0.24 Pa. A pulse bias power supply was added to the sample, and at a bias voltage of -450 V Use argon plasma to pre-sputter and clean the sample for 20-30 minutes to remove the oxide layer and other impurities on the surface;

[0053] (3) ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-entropy nitride coating for aircraft bearing surface protection. The high-entropy nitride coating is (CrAlTiNbV) Nx, and x is equal to 0.30.5; and the high-entropy nitride coating comprises the following elements in percentage by atom: 15 to 30 at. percent of Cr, 5 to 15 at. percent of Al, 3 to 10 at. percent of Ti, 5 to 10 at. percent of Nb, 5 to 15 at. percent of V and 30 to 50 at. percent of N. Meanwhile, the invention further discloses a preparation method of the coating. According to the high-entropy nitride coating for aircraft bearing surface protection and the preparation method thereof provided by the invention, the magnetron sputtering technology and the multi-element target technology are adopted, the high-entropy nitride coating containing the five elements can be successfully prepared, and the high-entropy nitride coating under the optimal N2 flow is obtained by regulating and controlling coating technological parameters, so that the wear resistance of a steel matrix can be greatly improved in the aviation lubricating oil environment.

Description

technical field [0001] The invention relates to the field of bearing surface protection, in particular to a high-entropy nitride coating for aircraft bearing surface protection and a preparation method thereof. Background technique [0002] With the development of aero-engines in the direction of high thrust-to-weight ratio, high reliability, high durability, low fuel consumption, and low cost, the moving parts serving in aero-engines, such as main shafts, bearings, compressor blades, hinges And gears, which are faced with complex and harsh working conditions such as load change, speed change, oil cut-off, etc., during operation, the contact surfaces between its parts are easily damaged, resulting in failure of moving parts. [0003] In the past few decades, the application of hard and wear-resistant solid self-lubricating coatings on mechanical parts has become more and more mature, and it has become an important way to improve the service performance of mechanical moving p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C14/35C23C14/06C23C14/16
CPCC23C14/352C23C14/0641C23C14/0036C23C14/165
Inventor 隋旭东郝俊英刘维民鲁晓龙杨军
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com