Nanocarbon Sliding Surface for Low-Resistance Wear Contacts
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Solution Overview
Problem
Existing sliding surface technologies face challenges in maintaining low contact resistance while ensuring abrasion resistance, as metal plating like silver is prone to abrasion and can elevate contact resistance due to exposure of raw material and increased friction.
Innovation Solution
A structure featuring a nanocarbon material, such as carbon nanotubes or carbon nanohorns, coated with an organic compound having specific functional groups that enhance bonding with the metal surface, reducing direct metal contact and improving abrasion resistance without increasing contact resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal plating (silver) is applied to reduce contact resistance, then contact resistance decreases, but abrasion resistance deteriorates
Solution Approach 1:
The patent applies a composite coating structure consisting of a metal plating layer (silver or copper) and a nanocarbon material layer. The metal layer provides low contact resistance while the nanocarbon layer (such as carbon nanotubes, graphene, or fullerenes) provides high abrasion resistance. This composite structure resolves the contradiction by combining materials with complementary properties, allowing the sliding surface to maintain both electrical conductivity and mechanical durability.
2Strength
If further surface treatment is applied to metal plating to improve abrasion resistance, then abrasion resistance improves, but contact resistance may increase
Solution Approach 1:
The patent applies nanocarbon materials specifically to the sliding surface region where abrasion occurs, while maintaining the metal plating's bulk properties for electrical conductivity. The nanocarbon coating is applied locally to the surface that contacts other components, providing abrasion resistance exactly where needed without compromising the overall electrical properties of the metal substrate. This localized application resolves the contradiction by treating only the critical wear zone.
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 solution effectively maintains low contact resistance and enhances abrasion resistance, reducing friction and extending the lifespan of sliding components by preventing direct metal contact and utilizing the conductivity and lubricity of nanocarbon materials.
Implementation Method 1
utilizing the conductivity and lubricity of nanocarbon materials
Implementation Method 2
an organic compound having specific functional groups that enhance bonding with the metal surface
Implementation Method 3
utilizing the conductivity and lubricity of nanocarbon materials
Data Source
AI summary
An object of the present invention is to provide a structure, a sliding member and a connector, having a surface (sliding surface) that is excellent in abrasion resistance and can keep contact resistance low for a long period, and a method for producing the structure. The object is attained by a structure having a configuration where a nanocarbon material is disposed on an at least partial surface of a metal, a sliding member and a connector, having the configuration, and a method for producing the structure. In the structure, it is preferred that a coating containing the nanocarbon material and an organic compound having at least a first functional group having affinity for the metal and a second functional group having affinity for the nanocarbon material should be disposed on the at least partial surface of the metal.