Glass Matrix Composite with Metal Oxide Nanostructures
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Solution Overview
Problem
Existing heating elements, particularly those made of metallic and carbon-based materials, face limitations due to oxidation at high temperatures, leading to deterioration and restricted application temperatures, while ceramic-based heating elements have low electrical conductivity and high costs, necessitating the development of materials with improved high-temperature durability and electrical conductivity.
Innovation Solution
A composite material structure comprising a glass matrix material layer with one-dimensional nanostructures, such as nanowires or nanorods, that have higher electrical conductivity than the matrix, where the nanostructures are formed through a process involving colloidal particles and glass powder, and thermally treated to create a network structure with controlled electrical conductivity and oxidation resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metallic or carbon-based heating materials are used, then electrical conductivity is improved, but oxidation resistance deteriorates at high temperatures
Solution Approach 1:
The patent employs a composite material structure consisting of a glass matrix phase and a metal oxide nanostructure phase. The glass matrix provides oxidation resistance and structural stability at high temperatures, while the dispersed metal oxide nanostructures (such as RuO2, IrO2, or PtO2) provide electrical conductivity and heating functionality. This composite approach allows the material to simultaneously achieve both oxidation resistance and adequate electrical conductivity, resolving the contradiction between these two properties.
2Reliability
If ceramic materials are used for heating elements, then oxidation resistance is improved, but electrical conductivity deteriorates
Solution Approach 1:
The patent applies local quality by creating a heterogeneous structure where the glass matrix provides the bulk oxidation resistance and structural integrity, while the metal oxide nanostructures are locally distributed within the matrix to provide concentrated electrical conductivity pathways. The nanostructures have high surface area to volume ratio, allowing them to provide sufficient electrical conductivity with minimal content (0.1-10 wt%), thus maintaining the overall ceramic-like oxidation resistance of the glass matrix while locally enhancing electrical properties.
3Reliability
If ceramic materials are used for heating elements, then oxidation resistance is improved, but manufacturing cost increases
Solution Approach 1:
The patent utilizes parameter changes by controlling the size, shape, and distribution of metal oxide particles within the glass matrix. By optimizing the particle size to the nanoscale range and controlling their dispersion, the patent achieves adequate electrical conductivity with significantly reduced metal oxide content compared to traditional ceramic heating elements. This parameter optimization allows the use of more expensive metal oxide materials at lower concentrations, thereby reducing overall manufacturing costs while maintaining oxidation resistance.
4Object-generated harmful factors
If metal oxide nanostructures are dispersed in glass matrix, then electrical conductivity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-synthesizing metal oxide nanostructures with controlled size, shape, and surface properties before incorporating them into the glass matrix. The nanostructures are prepared in advance with surface treatments or coatings that enhance their dispersibility and compatibility with the glass matrix. This preliminary preparation ensures uniform distribution and stable dispersion during the glass forming process, simplifying the overall manufacturing process despite the complexity of nanostructure synthesis.
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 achieves superior high-temperature durability, controlled electrical conductivity, and reduced manufacturing costs, enabling applications in heating elements and resistors with enhanced performance and stability.
Implementation Method 1
a plurality of one-dimensional nanostructures that are distributed in the matrix material layer and have a higher electrical conductivity than an electrical conductivity of the matrix material layer
Implementation Method 2
superior high-temperature durability (oxidation resistance)
Data Source
AI summary
A composite material structure including a matrix material layer; and a plurality of one-dimensional nanostructure distributed in the matrix material layer and having an electrical conductivity which is greater than an electrical conductivity of the matrix material layer, wherein the plurality of one-dimensional nanostructures includes a first one-dimensional nanostructure and a second one-dimensional nanostructure in contact with each other.