Wear-Resistant Coating Using Spherical Hard Particles
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Solution Overview
Problem
Existing wear protection coatings made of hard material particles in a plastic matrix lack durability and stability, particularly due to the loss of hard material particles during use, which affects their performance and longevity.
Innovation Solution
A wear protection coating with at least 10% by volume of hard material balls in a plastic matrix, where the hard material particles are evenly distributed and characterized by their roundness and surface roughness, ensuring improved stability and durability. The proportion of hard material particles can be up to 90% by volume, and the coating is applied in a thickness that allows for repeated regrinding without significant property changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hard material particles are used in a plastic matrix for wear protection coatings, then wear resistance is improved, but stability and durability deteriorate due to particle loss during use
Solution Approach 1:
The patent changes the shape parameter of hard material particles from angular to spherical form. This parameter change reduces stress concentration points and improves particle embedding stability in the plastic matrix, thereby reducing particle loss during wear while maintaining wear resistance
Solution Approach 2:
The patent creates a composite material system combining spherical hard material particles with a plastic matrix. The spherical geometry of particles enhances the composite's overall stability by improving interfacial bonding and reducing defect formation, thus maintaining reliability while providing wear protection
2Strength
If angular hard material particles are used, then wear resistance is provided, but particle loss increases during prolonged use
Solution Approach 1:
The patent applies spheroidality by using spherical hard material particles instead of angular ones. The curved surface of spherical particles eliminates sharp edges and corners that act as stress concentration points, reducing particle detachment during wear and minimizing substance loss while maintaining protective function
3Illumination intensity
If decorative films with low particle density are used, then translucency is maintained, but durability under constant loading deteriorates
Solution Approach 1:
The patent changes the shape parameter of particles to spherical form, which allows for better packing density and more uniform distribution in the matrix. This enables achieving both adequate particle density for durability and sufficient matrix continuity for translucency, resolving the contradiction between optical properties and mechanical durability under constant loading
Data Source
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AI summary
Disclosed is a wear-resistant coating composed of hard particles in a plastic matrix. At least 10 percent by volume of the hard particles are hard balls or have an index of roundness exceeding 0.05 or a surface roughness of less than 15 percent.