Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Wide-temperature-range self-lubricating nano-structure film material with long service life

A technology of service life and nanostructure, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, which can solve the problems of excessive consumption of self-lubricating components and single use only

Active Publication Date: 2021-04-06
JIANGSU UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The film material involved in the present invention overcomes the defects of excessive consumption of self-lubricating components in the existing self-lubricating film in a wide temperature range and can only be used once, and can be prepared by various methods such as magnetron sputtering, multi-arc, ion plating, etc. High production efficiency and industrial application value

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
  • Wide-temperature-range self-lubricating nano-structure film material with long service life
  • Wide-temperature-range self-lubricating nano-structure film material with long service life
  • Wide-temperature-range self-lubricating nano-structure film material with long service life

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of Al based on hard substrate surface 2 o 3 -Ag-C / Al 2 o 3 - A method for TiN / TiN nanostructured films comprising the steps of: Al 2 o 3 -Ag-C / Al 2 o 3 -The preparation of TiN / TiN film is completed on high-vacuum multi-target magnetron sputtering equipment. The magnetron sputtering equipment is referred to as magnetron sputtering instrument. On the three water-cooled target brackets, three stainless steel baffles are respectively placed in front of the three targets, which are automatically controlled by the computer; Al 2 o 3 The target (purity is 99.95%), Ag-C alloy target (purity is 99.9%) and TiN target (purity is 99.5%) are respectively installed on independent radio frequency cathodes, and the target diameter is 75mm;

[0019] Step 1: Treat the surface of the cemented carbide substrate as a mirror surface, then ultrasonically clean it with absolute ethanol and acetone for 15 minutes, dry it with hot air, and then put it into the film-making cab...

Embodiment 2

[0025] The difference from Example 1 is: when depositing the self-lubricating layer, the deposition time is 760s; when depositing the gradient layer, the deposition time is 90s; when depositing the hard layer, the deposition time is 300s. Subsequently, the above-mentioned deposition modulation layer was reciprocated 90 times. At this time, the thickness of the self-lubricating layer is ~60nm, the thickness of the gradient layer is ~5nm, and the thickness of the hard layer is ~60nm. The modulation ratio of the three modulation layers is 12:1:12, and the modulation period is 125nm. The film hardness was 22 GPa. Using silicon nitride as the friction pair, after a 30-minute circular friction test, the friction coefficient at room temperature, 300 °C, 600 °C and 800 °C is roughly stable at 0.4. The above friction test was repeated five times, and the film was not worn out, showing a high wide temperature range service life.

Embodiment 3

[0027] The difference from Example 1 is: when depositing the self-lubricating layer, the deposition time is 760s; when depositing the gradient layer, the deposition time is 90s; when depositing the hard layer, the deposition time is 150s. Subsequently, the above-mentioned deposition modulation layer was reciprocated 90 times. At this time, the thickness of the self-lubricating layer is ~60nm, the thickness of the gradient layer is ~5nm, and the thickness of the hard layer is ~30nm. The modulation ratio of the three modulation layers is 12:1:6, and the modulation period is 125nm. The film hardness was 17 GPa. Using silicon nitride as the friction pair, after a 30-minute circular friction test, the friction coefficient at room temperature, 300 °C, 600 °C and 800 °C is roughly stable at 0.3. The above friction test cycle was repeated five times, and the film was not worn out, showing a high wide temperature range service life.

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of preparation of hard coating materials, in particular to a wide-temperature-range self-lubricating nano-structure film material with a long service life. The related nano-structure film is of a multi-element multi-layer structure and is composed of three modulation layers; one modulation layer is a self-lubricating layer and has a nano capsule structure, a capsule core is C and Ag, and a capsule shell is amorphous Al2O3; the other modulation layer is a hard layer and is face-centered cubic TiN; and another modulation layer is a gradient layer, is located between the self-lubricating layer and the hard layer, and consists of amorphous Al2O3 and face-centered cubic TiN. The wide-temperature-range self-lubricating nano-structure film material has the beneficial effects that an amorphous oxide shell wraps the core of the lubricating component, and the nano capsule shell effectively avoids excessive consumption of the lubricating component; interlayer stripping in the wide-temperature-range friction service process is avoided, and the abrasion resistance of a film is improved; and the highest hardness of the film material can be 24 GPa, the friction coefficient of the film material in the environment of room temperature to 900 DEG C is approximately stabilized between 0.4-0.6, and the film material can be repeatedly used for multiple times in the environment of room temperature to high temperature.

Description

technical field [0001] The invention relates to the field of preparation of hard coating materials, in particular to a wide temperature range self-lubricating hard Al alloy with high service life in room temperature to high temperature environment. 2 o 3 -Ag-C / Al 2 o 3 -TiN / TiN nanostructure thin film material and its preparation method. Background technique [0002] With the rapid development of engine start and stop, high-speed aircraft and thermonuclear fields, the core components involved, such as pistons, bearings and turbine blades, need to serve for a long time in a wide temperature range from room temperature to high temperature. Traditional lubricating greases It has been difficult to meet the performance requirements. Therefore, how to use surface technology to design and develop self-lubricating surface materials with high service life in a wide temperature range is an effective way to solve the above problems, and has become one of the frontier directions in ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/06C23C14/32C23C14/35B82Y30/00B82Y40/00
CPCC23C14/0688C23C14/06C23C14/0641C23C14/352C23C14/325C23C14/32B82Y30/00B82Y40/00
Inventor 鞠洪博周锐喻利花许俊华汪然
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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