Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of iron-based self-lubricating material and preparation method thereof

A self-lubricating material, iron-based technology, applied in the field of composite materials, can solve problems such as loss of lubrication, achieve excellent lubrication and wear resistance, reduce wear and energy consumption, and excellent self-lubricating performance

Inactive Publication Date: 2017-12-08
UNIV OF SCI & TECH BEIJING
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molybdenum disulfide is a very excellent lubricating material, but at the sintering temperature of iron-based materials, since the Gibbs free energy of molybdenum disulfide is higher than that of ferrous sulfide, the state of molybdenum disulfide Unstable will react with iron matrix to form ferrous sulfide, and at the same time, molybdenum element will diffuse and dissolve into iron particles, thus losing its lubricating effect

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
  • A kind of iron-based self-lubricating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Prepare an iron-based self-lubricating material with modified molybdenum disulfide as a lubricating component. The chemical composition is as follows: modified molybdenum disulfide accounts for 3%, and the median diameter of molybdenum disulfide is 20 μm; -100 mesh Iron powder accounts for 97%. Its preparation process is as follows:

[0023] (1) Copper plating on the surface of molybdenum disulfide: CuSO 4 ·5H 2 O was added to deionized water to prepare copper sulfate solution, then potassium sodium tartrate and EDTA-2Na were added as complexing agents, sodium hydroxide was used to adjust the pH of the solution, and formaldehyde was added after the solution was heated to the reaction temperature as a reducing agent. molybdenum disulfide, so that the mass fraction of electroless copper plating on its surface is 3% of the mass of molybdenum disulfide, and then mechanically stirred. After the solution is clarified, the reaction is complete, and then the copper-coated mo...

example 2

[0028] An iron-based self-lubricating material with modified molybdenum disulfide as a lubricating component. The chemical composition is as follows: modified molybdenum disulfide accounts for 5%, and the median diameter of molybdenum disulfide is 25 μm; -100 mesh iron powder 95%. Its preparation process is as follows:

[0029] (1) Copper plating on the surface of molybdenum disulfide: CuSO 4 ·5H 2 O was added to deionized water to prepare copper sulfate solution, then potassium sodium tartrate and EDTA-2Na were added as complexing agents, sodium hydroxide was used to adjust the pH of the solution, and formaldehyde was added after the solution was heated to the reaction temperature as a reducing agent. molybdenum disulfide, so that the mass fraction of electroless copper plating on its surface is 5% of the mass of molybdenum disulfide, and then mechanically stirred. After the solution is clarified, the reaction is complete, and then the copper-coated molybdenum disulfide pa...

example 3

[0034] An iron-based self-lubricating material with modified molybdenum disulfide as a lubricating component. The chemical composition is: modified molybdenum disulfide: 5%, the median diameter of molybdenum disulfide is 15 μm; -100 mesh 316L stainless steel powder 95%. Its preparation process is as follows:

[0035] (1) Copper plating on the surface of molybdenum disulfide: CuSO 4 ·5H 2 O was added to deionized water to prepare copper sulfate solution, then sodium potassium tartrate and EDTA-2Na were added as complexing agents, sodium hydroxide was used to adjust the pH of the solution, and formaldehyde was added after the solution was heated to the reaction temperature as a reducing agent. Molybdenum disulfide of suitable mass is added so that the mass fraction of electroless copper plating on its surface is 6% of the mass of molybdenum disulfide, and then mechanically stirred. After the solution is clarified, the reaction is complete, and then the copper-coated molybdenu...

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

No PUM Login to View More

Abstract

An iron-based self-lubricating material and a preparation method thereof belong to the technical field of composite materials. The composition of the composite material in the present invention: iron powder or stainless steel powder is used as matrix raw material, modified molybdenum disulfide is used as lubricating component, and a certain amount of carbon, copper or nickel can also be added as alloying element. Mass percentage: 83%-99% for iron powder or stainless steel powder, 1%-7% for modified molybdenum disulfide particles, 0%-10% for other alloying elements (carbon, copper or nickel). It is prepared by powder metallurgy cold pressing molding and sintering, and hot pressing sintering can also be used as a molding method. When the green body of the composite material is sintered at high temperature, the molybdenum disulfide therein does not react with the iron element and is preserved stably, so that the composite material has the characteristics of low friction coefficient and strong wear resistance. It can be applied to mechanical structures where there is no liquid lubricant or the liquid lubricant is not enough to provide sufficient lubrication to reduce the wear of parts and equipment energy consumption.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a metal-based self-lubricating composite material and a preparation method thereof Background technique [0002] Self-lubricating composite materials have low friction coefficient and wear, can reduce equipment energy consumption, prolong the service life of parts, and have a wide range of applications in the mechanical field. Molybdenum disulfide is a very excellent lubricating material, but at the sintering temperature of iron-based materials, since the Gibbs free energy of molybdenum disulfide is higher than that of ferrous sulfide, the state of molybdenum disulfide Instability will react with the iron matrix to form ferrous sulfide, and at the same time, the molybdenum element will diffuse and dissolve into the iron particles, thus losing its lubricating effect. For example Chinese patent: CN200710307295 etc. do not solve this problem. Contents of the invention...

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 Patents(China)
IPC IPC(8): C22C38/60C22C33/02
Inventor 许恩恩郭志猛袁勇叶青牟维国陈存广于永亮罗骥
Owner UNIV OF SCI & TECH BEIJING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com