Spinel Compound Oxide Particle Crystallite Size for Thermal Conductivity
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Solution Overview
Problem
Spinel compound oxide particles have not been effectively utilized as thermal conductive inorganic fillers due to their lower thermal conductivity compared to alumina, which is often used for cost reasons.
Innovation Solution
The development of spinel compound oxide particles with a larger crystallite size in the [111] plane, incorporating metallic atoms such as zinc, cobalt, or strontium, and molybdenum, which enhances their thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If spinel compound oxide particles are used as inorganic fillers, then cost is reduced compared to alumina, but thermal conductivity is insufficient
Solution Approach 1:
The patent applies parameter changes by controlling the crystallite size in the [111] plane to be 100 nm or more, which fundamentally changes the thermal conductivity parameter of spinel compound oxide particles. This specific crystallite size parameter transformation enables the material to achieve thermal conductivity comparable to or exceeding alumina, thereby resolving the contradiction between cost advantage and thermal conductivity insufficiency.
2Reliability
If alumina is used as inorganic filler, then thermal conductivity is high, but cost is higher compared to spinel compound oxide
Solution Approach 1:
By transforming the crystallite size parameter of spinel compound oxide to 100 nm or more in the [111] plane, the patent achieves thermal conductivity performance that matches or exceeds alumina. This parameter transformation allows spinel compound oxide to become a cost-effective alternative to alumina while maintaining or improving thermal conductivity.
3Volume of moving object
If device size is reduced, then device weight and integration density improve, but heat dissipation becomes more difficult
Solution Approach 1:
The patent employs composite materials by incorporating spinel compound oxide particles with specific crystallite sizes into resin matrices to create thermal conductive composite materials. These composites achieve high thermal conductivity despite small device sizes, enabling effective heat dissipation in miniaturized devices without compromising thermal management.
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 spinel compound oxide particles exhibit significantly higher thermal conductivity, making them suitable for use in thermal conductive materials, improving heat dissipation in devices with smaller size and higher performance.
Implementation Method 1
the spinel compound oxide particle having a crystallite size in a [111] plane of 100 nm or more... spinel compound oxide particle having much higher thermal conductivity than existing one
Data Source
AI summary
A spinel compound oxide particle includes metallic atoms, aluminum atoms, oxygen atoms, and molybdenum atoms, wherein the metallic atoms are selected from the group consisting of zinc atoms, cobalt atoms, and strontium atoms, and a crystallite size in a [111] plane is 100 nm or more. Included are a step (1) of firing a first mixture including a molybdenum compound and a metallic-atom-containing compound or a first mixture including a molybdenum compound, a metallic-atom-containing compound, and an aluminum compound to prepare an intermediate; and a step (2) of firing, at a temperature higher than a temperature selected in the step (1), a second mixture including the intermediate or a second mixture including the intermediate and an aluminum compound.