Colored Metal Composite via Sintering for Wear-Resistant Color
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Solution Overview
Problem
Current methods for coloring metal, such as anodizing, plating, and physical vapor deposition, result in color loss due to wear and damage, making them unsatisfactory for durable applications.
Innovation Solution
A colored metal composite is created by distributing colored particles, such as inert oxides and gemstones, throughout a sintered metal matrix, ensuring consistent coloration throughout the material and resistance to wear, achieved through solid-state sintering of metal powder with added colored particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color is applied by anodizing, plating, or adding outer coating, then coloration is achieved, but the coloration is susceptible to wear and loss
Solution Approach 1:
The invention creates a composite material by incorporating colored particles (such as metal oxides, carbides, nitrides, or other colored substances) directly into the metal matrix during the sintering process. This results in a homogeneous distribution of color throughout the bulk material, making the color an inherent property rather than a surface coating. The composite structure ensures that color is maintained even when the surface experiences wear or damage, as the color extends through the entire material depth.
2Reliability
If color is applied as an outer coating, then coloration is achieved, but the outer coating can be lost or damaged
Solution Approach 1:
The invention merges the coloring function with the base metal material by distributing colored particles throughout the metal matrix during sintering. This combination creates a unified material where color and structure are integrated rather than separate layers. The colored particles become an integral part of the material composition, eliminating the distinction between coating and substrate that exists in traditional plating or anodizing methods.
3Reliability
If colored particles are distributed throughout the metal matrix, then consistent coloration throughout the material is achieved, but manufacturing complexity increases
Solution Approach 1:
The invention performs the coloring action during the sintering process itself, rather than as a separate subsequent step. Colored particles are mixed with metal powder before sintering, so that the coloring occurs simultaneously with the formation of the metal matrix. This preliminary integration of the coloring step into the base manufacturing process avoids adding separate coating or treatment operations, thereby maintaining manufacturing simplicity while achieving uniform color distribution.
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 colored metal composite maintains consistent coloration and durability, allowing for long-lasting color retention even under wear and damage, suitable for applications like vehicle parts and electronic device covers.
Implementation Method 1
The metal powder is sintered around the colored particles to form a metal matrix
Data Source
Figure 1~3
AI summary
A colored metal composite comprising: a metal matrix; and colored particles distributed throughout the metal matrix and/or a method comprising: providing metal powder as a first phase of a composite; providing colored particles to form a second phase of the composite; mixing the metal powder and colored particles; and sintering the metal powder around the colored particles to form a metal matrix that has colored particles distributed throughout.