CVD materials
CVD Diamond coating
Item Number : cvdm-05
Price varies based on specs and customizations
- Thickness:
- <50μm
- Thickness after polishing:
- <30μm
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Introduction
Chemical vapor deposition (CVD) diamond coating is a process for depositing a thin film of diamond onto a substrate. The process involves the deposition of a carbon-containing gas onto a heated substrate in the presence of a hydrogen-containing gas. The carbon atoms in the gas are ionized and accelerated towards the substrate, where they react with the hydrogen atoms to form diamond.
CVD diamond coatings have a number of advantages over natural diamond, including their low friction coefficient, excellent wear resistance, thermal stability, good uniformity, and good adhesion. These properties make CVD diamond coatings ideal for a wide range of applications, including cutting tools, wire drawing dies, acoustic devices, and friction and wear applications.
CVD diamond coatings are typically deposited on a variety of substrates, including silicon, carbide, and metal. The thickness of the coating can be controlled by varying the deposition time and temperature. CVD diamond coatings can be grown with a variety of surface structures, including smooth, faceted, and textured. The surface structure of the coating can be tailored to optimize the film for a given application.
Applications
CVD diamond coating application has a wide range of applications due to its exceptional properties such as low friction coefficient, excellent wear resistance, good thermal stability, uniformity, and adhesion. Some of the main application areas include:
- Diamond thin film coated SiC for sealing applications in harsh environments.
- Diamond thin film coated deep-cavity cemented carbide wire drawing dies with circular cross-section cavities.
- Diamond thin film coated deep-cavity cemented carbide wire drawing dies with irregular-shaped cavities.
- Diamond thin film coated silicon wafer for acoustic applications (high-frequency (GHz) surface acoustic wave (SAW) devices).
- Diamond thin film coatings for friction and wear applications.
Features
The CVD Diamond coating feature offers a range of benefits and features that make it a valuable choice for various applications:
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Low friction coefficient: This feature reduces friction and wear, leading to improved performance and longer lifespan of tools and components.
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Excellent wear resistance: The diamond coating provides exceptional resistance to wear and abrasion, making it suitable for applications where durability is critical.
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Excellent thermal stability: The coating exhibits high thermal stability, enabling it to withstand extreme temperatures without compromising its properties.
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Good uniformity: The CVD process ensures uniform coating thickness and consistency, resulting in reliable and predictable performance.
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Good adhesion: The diamond coating adheres strongly to the substrate, ensuring a durable and long-lasting bond.
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Wide range of surface structures: The CVD process allows for the growth of various surface structures, such as thin and smooth surfaces, thicker films, and faceted surfaces, enabling optimization for specific applications.
Principle
Chemical vapor deposition (CVD) diamond coating is a process in which a diamond film is deposited on a substrate by the chemical reaction of a hydrocarbon gas with atomic hydrogen. The atomic hydrogen is generated by a plasma, which is created by an electric arc or a microwave discharge. The diamond film grows on the substrate by the deposition of carbon atoms from the hydrocarbon gas onto the substrate surface. The properties of the diamond film, such as its thickness, grain size, and surface morphology, can be controlled by varying the process parameters, such as the gas composition, pressure, temperature, and substrate bias.
Advantages
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Low friction coefficient, significantly reducing friction and wear during use.
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Excellent wear resistance, extending the service life of tools and components.
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Excellent thermal stability, maintaining performance even in high-temperature environments.
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Good uniformity, ensuring consistent coating thickness and properties across the surface.
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Good adhesion, providing a strong bond between the coating and the substrate.
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Ability to grow a wide range of surface structures, optimizing the film for specific applications.
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Can be used on various substrates, including metals, ceramics, and polymers.
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Chemically inert, making it resistant to corrosion and chemical attack.
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Biocompatible, making it suitable for medical and biological applications.
Specifications
| Vickers hardness: | 8000-10000mm2 |
| Young's Modulus: | 1000-1100GPa |
| Friction Coefficient: | 0.05-0.1 |
| Thickness: | <50μm |
| Thickness after polishing: | <30μm |
FAQ
What is the unique advantage of the CVD diamond-coating process?
What are the applications of CVD Diamond coating?
What are the advantages of CVD Diamond coating?
4.9
out of
5
The CVD Diamond coating has been a game-changer for our laboratory. Its durability and precision have significantly improved our research outcomes.
4.8
out of
5
We were skeptical at first, but the CVD Diamond coating has exceeded our expectations. Its versatility and cost-effectiveness make it an excellent investment.
4.7
out of
5
The CVD Diamond coating has revolutionized our micro-grinding applications. Its fine-grained structure and sharp edges ensure exceptional precision and surface finish.
4.9
out of
5
The CVD Diamond coating's low friction coefficient and wear resistance have drastically reduced maintenance costs and downtime in our laboratory.
4.8
out of
5
The CVD Diamond coating's thermal stability has been a lifesaver in our high-temperature applications. It has significantly reduced tool wear and improved our productivity.
4.7
out of
5
The CVD Diamond coating has opened up new possibilities for our research. Its ability to coat complex geometries has enabled us to create tools with unparalleled precision.
4.9
out of
5
The CVD Diamond coating's uniform thickness and consistency ensure reliable performance and predictable results in our laboratory.
4.8
out of
5
The CVD Diamond coating's strong adhesion to the substrate has eliminated delamination issues and extended the lifespan of our tools.
4.7
out of
5
The CVD Diamond coating's biocompatibility has made it an indispensable tool in our biomedical research.
4.9
out of
5
The CVD Diamond coating's ability to withstand extreme conditions has made it a valuable asset in our harsh environment applications.
4.8
out of
5
The CVD Diamond coating's low friction coefficient has significantly improved the efficiency and accuracy of our cutting operations.
4.7
out of
5
The CVD Diamond coating's excellent wear resistance has reduced tool wear and maintenance costs, saving us time and money.
4.9
out of
5
The CVD Diamond coating's versatility has enabled us to use it in a wide range of applications, from micro-machining to medical devices.
4.8
out of
5
The CVD Diamond coating's high thermal stability has improved the performance and longevity of our tools in high-temperature environments.
4.7
out of
5
The CVD Diamond coating's good adhesion has ensured a strong and durable bond between the coating and the substrate.
4.9
out of
5
The CVD Diamond coating's ability to grow a wide range of surface structures has allowed us to tailor the coating to our specific application needs.
4.8
out of
5
The CVD Diamond coating's chemically inert nature has made it resistant to corrosion and chemical attack, extending its lifespan.
4.7
out of
5
The CVD Diamond coating's biocompatibility has opened up new possibilities for our biomedical research.
4.9
out of
5
The CVD Diamond coating's excellent wear resistance has reduced maintenance costs and downtime, improving our productivity.
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