Ag-Coated Electrical Connection Material for Adhesion Resistance
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Solution Overview
Problem
Metal materials with an Ag layer used in electrical connection members, such as automotive vehicle terminals, face issues with adhesion and peeling due to their softness, especially in high-temperature environments, which affect their electrical connection characteristics and durability.
Innovation Solution
A metal material with a surface Ag layer having a hardness of 90 HV or more, combined with a coating layer formed using an organic compound containing a mercapto group, which covers the Ag layer to prevent adhesion and wear, even under high temperatures and heavy surface pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an Ag layer is used on the surface of the metal material, then electrical conductivity and corrosion resistance are improved, but adhesion and surface wear occur easily due to the softness of Ag
Solution Approach 1:
The patent changes the physical parameter of the Ag layer by controlling its hardness to be 90 HV or more through specific manufacturing processes, transforming the soft Ag layer into a hard Ag layer that resists wear and adhesion while maintaining electrical conductivity
Solution Approach 2:
The patent creates a composite surface structure consisting of a hard Ag layer (90 HV or more) combined with an organic compound coating layer containing mercapto groups, where the Ag layer provides electrical conductivity and the coating layer provides adhesion resistance
2Strength
If the Ag layer is made harder to suppress wear and peeling, then surface durability is improved, but adhesion properties may deteriorate
Solution Approach 1:
The patent introduces an organic compound coating layer containing mercapto groups as an intermediary between the hard Ag layer and the external environment, which specifically suppresses adhesion of other metals to the Ag layer while allowing the Ag layer to maintain its high hardness
Solution Approach 2:
The patent specifies that the Ag layer hardness should be 90 HV or more, optimizing the balance between wear resistance and adhesion properties by controlling the hardness parameter within a specific range
3Reliability
If a special metal layer or alloy layer is provided to suppress adhesion, then adhesion resistance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent extracts the adhesion suppression function from the metal layer composition itself and transfers it to an organic compound coating layer, allowing the Ag layer to maintain simple composition while achieving adhesion resistance through the coating
Solution Approach 2:
The patent uses a thin organic compound coating layer instead of complex metal alloy layers, providing adhesion resistance with a simpler, more cost-effective solution that does not require special metal compositions
4Reliability
If the Ag layer is used in high-temperature environments, then electrical connection performance is maintained, but adhesion and peeling occur more easily
Solution Approach 1:
The organic compound coating layer containing mercapto groups acts as a protective intermediary that specifically suppresses adhesion and peeling of the Ag layer in high-temperature environments, allowing the electrical connection member to maintain performance under thermal stress
Solution Approach 2:
The patent specifies the Ag layer hardness should be 90 HV or more, which optimizes the layer's resistance to thermal-induced adhesion and peeling while maintaining electrical conductivity in high-temperature operating conditions
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 suppresses adhesion and peeling of the Ag layer, maintaining the electrical connection characteristics and heat resistance of the Ag layer, even in high-temperature environments and under heavy load conditions, without requiring a special metal layer composition.
Implementation Method 1
a coating layer for covering the surface of the metal material, the coating layer being formed by bringing an organic compound having a mercapto group into contact with the surface of the metal material
Data Source
AI summary
It is aimed to provide an electrical connection member material and an electrical connection member capable of suppressing adhesion in an Ag layer even without using a special metal layer. An electrical connection member material 1 is provided with a metal material 10 including an Ag layer 13 on a surface, a surface hardness of the Ag layer 13 being 90 HV or more, and a coating layer 2 for covering the surface of the metal material 10. The coating layer 2 is formed by bringing an organic compound having a mercapto group into contact with the surface of the metal material 10. Further, an electrical connection member includes the electrical connection member material 1.