Lightweight Ferromagnetic Core-Solenoid Devices Using Zero-Valent Element Hydride Complexes

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Solution Overview

Problem

Conventional ferromagnetic materials used in core-solenoid devices, such as electric motors and generators, are heavy due to their high density, which limits the efficiency and weight of vehicles employing these devices.

Innovation Solution

Development of lightweight ferromagnetic compositions formed by a complex of zero-valent elements, such as carbon or boron, with hydride molecules, which are synthesized through a ball-milling process, providing a ferromagnetic core for core-solenoid devices without the need for inherently ferromagnetic elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional ferromagnetic materials (iron, nickel, cobalt, rare-earth metals) are used in core-solenoid devices, then strong magnetic properties are achieved, but the device weight increases significantly

Engineering Contradiction:
Improvemagnetic propertiesVSAvoiddevice weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent uses composite materials consisting of non-ferromagnetic elements (carbon, boron, silicon, phosphorus) combined with hydride molecules (BH4, AlH4, GaH4). This composite structure achieves ferromagnetic properties through the interaction between the zero-valent element and the hydride, rather than relying on inherently ferromagnetic elements. The composite nature allows tuning of magnetic properties while maintaining low density.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent changes the fundamental parameters of ferromagnetic materials by using zero-valent elements in their elemental form combined with hydrides. This represents a parameter change from using elements with high atomic numbers (Fe, Ni, Co) to using light elements (C, B, Si, P) in specific oxidation states and molecular configurations, thereby achieving ferromagnetism with much lower density.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If ferromagnetic materials with high density are used, then stable bulk magnetic fields are achieved, but the efficiency of automotive vehicles decreases

Engineering Contradiction:
Improvemagnetic field stabilityVSAvoidvehicle efficiency
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The low-density ferromagnetic compositions use composite structures of zero-valent elements with hydride molecules. These composites provide the necessary magnetic field stability for automotive applications while significantly reducing the weight of core-solenoid devices, thereby improving overall vehicle efficiency and energy consumption.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

By changing the material parameters from high-density conventional ferromagnetic materials to low-density zero-valent element hydride complexes, the patent achieves a favorable balance between magnetic field stability and vehicle efficiency. The new materials maintain adequate coercivity and saturation magnetization while reducing density by a factor of 5-10 times.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If inherently ferromagnetic elements are used, then ferromagnetic properties are achieved, but the density increases to about 8 g/cm3

Engineering Contradiction:
Improveferromagnetic propertiesVSAvoidmaterial density
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent employs composite materials formed by zero-valent elements (carbon, boron, silicon, phosphorus) combined with hydride molecules. These composites achieve ferromagnetic properties through the specific interaction between the elemental form of light atoms and the hydride anions, producing materials with density one-tenth that of conventional ferromagnetic materials while maintaining functional magnetic properties.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent extracts the essential ferromagnetic property from the heavy inherently ferromagnetic elements and recreates it using light zero-valent elements combined with hydrides. This extraction approach removes the dependence on high-density elements like iron, nickel, and cobalt, achieving ferromagnetism through a different chemical and physical mechanism that involves unpaired electrons in the zero-valent element-hydride complex.

Inventive Principle:
Principle #2Taking out (Extraction)

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 resulting ferromagnetic compositions exhibit coercivity up to ten times greater than raw iron while having a density one-tenth that of conventional ferromagnetic materials, leading to lighter and more efficient core-solenoid devices and vehicles.

Implementation Method 1

a complex according to Formula I: Q0.Xy I, wherein Q0 is a zero-valent element, X is a hydride, and y is an integral or fractional value greater than zero

Methodology Applied
Scientific EffectChemical Bonding: Chemical Bonding

Implementation Method 2

Ferromagnetic materials, materials with a strong tendency to align atomic magnetic dipoles with strict parallelism, are indispensable to the operation of a wide array of retail and industrial devices

Methodology Applied
Scientific EffectFerromagnetism: Ferromagnetism

Data Source

PatentUS9384878B2Ferromagnetic carbon and boron lithium borohydride complexes
Publication Date: 2016.07.05 TOYOTA JIDOSHA KK
  • US9384878B2 patent drawing
  • US9384878B2 patent drawing
  • US9384878B2 patent drawing

AI summary

A novel ferromagnetic composition is provided. The reagent includes at least one zero-valent atom, whether metal, metalloid, or non-metal, in complex with at least one hydride molecule. The composition need not contain any inherently ferromagnetic elements and can be much lighter than conventional iron or other metal-based ferromagnetic materials. Core-solenoid devices having ferromagnetic cores which employ the novel ferromagnetic composition are additionally provided. Examples such as electric motors or generators for use in hybrid or all-electric automobiles are included.