Carbon Fluoride Composite Solid Lubricant for High Temperature and Pressure

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Solution Overview

Problem

Conventional solid lubricants are not effective under various conditions, particularly at high temperatures or high pressures, and do not synergistically combine the lubrication properties of different materials.

Innovation Solution

Solid particles with carbon fluoride particles attached to the surfaces of base particles, such as molybdenum disulfide, boron nitride, or alumina, using mechanochemical processing to achieve improved lubrication across a range of conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If carbon fluoride is used as a solid lubricant under high vacuum or high temperature conditions, then lubrication performance is improved, but it becomes inferior to other solid lubricants under atmospheric pressure or low temperature

Engineering Contradiction:
Improvelubrication performanceVSAvoidadaptability to various conditions
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent combines carbon fluoride particles with base particles (such as molybdenum disulfide, boron nitride, or alumina) to create composite solid particles. This merging allows the composite to exhibit carbon fluoride's excellent lubrication under high vacuum and high temperature while the base particles provide effective lubrication under atmospheric pressure and low temperature conditions, thus resolving the contradiction between optimized performance for specific conditions and adaptability across various conditions

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The invention creates composite solid particles consisting of carbon fluoride particles attached to base particles. This composite material structure allows different materials to contribute their respective strengths: carbon fluoride provides superior lubrication in high vacuum and high temperature environments, while the base particles ensure effective lubrication in atmospheric pressure and low temperature conditions, achieving both specialized performance and broad adaptability

Inventive Principle:
Principle #40Composite materials

2Ease of manufacture

If conventional solid lubricants are used, then simple application is possible, but lubrication effectiveness is insufficient under various conditions particularly high temperature or high pressure

Engineering Contradiction:
Improveapplication simplicityVSAvoidlubrication effectiveness
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent merges carbon fluoride particles with base particles to create composite solid particles that maintain ease of application while significantly improving lubrication effectiveness. The composite structure allows the material to be applied as a unified solid lubricant while internally combining the strengths of both carbon fluoride (effective under high temperature and pressure) and base particles (effective under various other conditions), thus resolving the contradiction between simple application and effective lubrication

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The composite particles exhibit excellent lubrication under various conditions, combining the strengths of both carbon fluoride and base particles, enhancing surface lubrication and fatigue life in applications like sliding components.

Implementation Method 1

the carbon fluoride particles are preferably made to attach to the base particles by mechanochemical processing

Methodology Applied
Scientific EffectMechanochemical processing:

Data Source

PatentUS9771539B2Solid particle, solid lubricant, and metal member
Publication Date: 2017.09.26 DAIKIN INDUSTRIES LTD
  • US9771539B2 patent drawing
  • US9771539B2 patent drawing

AI summary

The present invention aims to provide solid particles with improved lubrication, a solid lubricant including the solid particles, and a metal member including, on the surface thereof, the solid particles or the solid lubricant. The solid particles of the present invention include base particles and carbon fluoride particles attached to surfaces of the base particles.