Porous Metal Foam Composite for Magnetic Shielding Flexibility
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Solution Overview
Problem
Existing composite materials with high magnetic permeability often have complex processing methods and high costs, and when metal particles are used as fillers, they result in materials that are less flexible and may have issues with electrical insulation.
Innovation Solution
A composite material comprising a first region of conductive metal foam and a second region of soft magnetic metal foam, with specific pore characteristics and thickness ratios, to achieve high magnetic permeability and mechanical flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal particles are used as filler to achieve high magnetic permeability, then magnetic permeability is improved, but flexibility deteriorates
Solution Approach 1:
The patent uses metal foam with a porous structure as the magnetic material component. The foam structure provides high surface area to volume ratio which enhances magnetic permeability while the porous architecture maintains flexibility. The metal foam comprises a continuous metal phase forming cells with open or closed pores, allowing the material to be both magnetically effective and mechanically flexible.
Solution Approach 2:
The patent creates a composite material system consisting of metal foam (providing magnetic properties) combined with polymer matrix or coating layers (providing flexibility and structural support). This composite approach allows optimization of both magnetic permeability and mechanical flexibility by selecting appropriate metal foam types and matrix materials.
2Reliability
If multicomponent material is used with crystallization to increase magnetic permeability, then magnetic permeability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent achieves high magnetic permeability by controlling physical parameters of the metal foam such as porosity, pore size distribution, and metal phase composition, rather than requiring complex multicomponent crystallization processes. By adjusting foam density and metal content within specific ranges, the desired magnetic properties are obtained through simpler manufacturing.
Solution Approach 2:
The patent employs metal foam that can be produced through relatively simple and cost-effective processes compared to traditional multicomponent crystallization methods. The foam structure allows for direct formation of magnetic material with desired properties without requiring multiple processing steps, reducing both manufacturing complexity and cost.
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 material exhibits high magnetic permeability and excellent mechanical properties, including flexibility, making it suitable for applications such as electromagnetic-wave shielding, with improved processing efficiency and reduced costs.
Implementation Method 1
The composite material may be formed of a material having high magnetic permeability due to the unique surface area and pore characteristics of the metal foam and multiple reflection and absorption by the material of the metal foam
Data Source
AI summary
The present application relates to a composite material. The present application can provide a composite material having high magnetic permeability and also having excellent mechanical properties such as flexibility. The composite material may be used in various applications, and for example, may be used as an electromagnetic-wave shielding material and the like.