Iron Aluminide Magnetic Medium via Deformation

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Solution Overview

Problem

Existing technologies lack an effective method for creating a magnetically readable medium that utilizes iron aluminide alloys, which are known for their high temperature resistance and mechanical properties, to provide distinct magnetic regions for coding and recognition purposes.

Innovation Solution

The development of an intermetallic iron aluminide magnetically readable medium with deformation-induced localized magnetism (DILM) regions, formed by plastic deformation of strain-annealed paramagnetic iron aluminide, allowing for the creation of magnetically readable surfaces with regions that can be differentiated by magnetic readers.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If iron aluminide alloys are used as a magnetically readable medium, then high temperature resistance and mechanical properties are improved, but the ability to create distinct magnetic regions for coding is insufficient

Engineering Contradiction:

Improvehigh temperature resistanceVSAvoidmagnetic region differentiation

Core Design Contradiction:

TemperatureVSManufacturing precision

Solution Approach 1:

The patent applies local quality by creating deformation-induced localized magnetism (DILM) regions within the iron aluminide alloy. These localized regions exhibit enhanced magnetic properties compared to the surrounding paramagnetic matrix, enabling distinct magnetic coding regions while maintaining the overall high-temperature resistance of the alloy material.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes parameter changes by inducing magnetic properties through plastic deformation. The mechanical deformation process alters the local magnetic parameters of the iron aluminide alloy, transforming paramagnetic regions into ferromagnetic DILM regions, thereby creating readable magnetic patterns without changing the base material's high-temperature characteristics.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If plastic deformation is applied to create DILM regions, then magnetic readability is improved, but the complexity of the manufacturing process increases

Engineering Contradiction:

Improvemagnetic readabilityVSAvoidmanufacturing process complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex magnetic field application systems with a simpler mechanical deformation approach. By using plastic deformation to induce localized magnetism, the manufacturing process avoids the need for sophisticated magnetic field generation and control equipment, thereby improving magnetic readability while keeping the manufacturing process relatively simple.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Loss of information

If conventional magnetic materials are used, then magnetic coding capability is improved, but resistance to electromagnetic pulse demagnetization is insufficient

Engineering Contradiction:

Improvemagnetic coding capabilityVSAvoidresistance to electromagnetic pulse

Core Design Contradiction:

Loss of informationVSReliability

Solution Approach 1:

The patent employs composite material characteristics by combining the paramagnetic iron aluminide matrix with deformation-induced ferromagnetic regions. This composite structure provides both magnetic coding capability and enhanced reliability against electromagnetic pulses, as the mechanically induced magnetic regions are more resistant to demagnetization compared to conventional magnetic materials.

Inventive Principle:

Principle #40Composite materials

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

This solution enables the creation of a magnetically readable medium that provides secure identification, anti-counterfeiting measures, and anti-forging capabilities, with DILM regions offering permanent magnetic properties resistant to demagnetization by magnetic forces, allowing for reliable reading even after exposure to electromagnetic pulses.

Implementation Method 1

deformation-induced localized magnetism (DILM) regions, formed by plastic deformation of strain-annealed paramagnetic iron aluminide

Methodology Applied

Scientific EffectDeformation-induced localized magnetism (DILM):

Data Source

PatentUS10489615B2Intermetallic magnetically readable medium

Publication Date: 2019.11.26 PHILIP MORRIS USA INC

AI summary

An intermetallic or iron aluminide magnetically readable medium and a method of forming and reading the same are provided herein. Also provided is an identification card or tag, a key, an anti-counterfeiting measure, an anti-forging measure. The intermetallic or iron aluminide magnetically readable medium includes a magnetically readable surface, wherein the magnetically readable surface contains one or more first magnetically readable regions of the intermetallic or iron aluminide surrounded by one or more second magnetically readable regions. Additionally, the intermetallic or iron aluminide magnetically readable medium can be coated, encapsulated or concealed within a material.