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CVD Diamond: A Superheat-Dissipating New Material Born to Reduce Fever

　　As end products increasingly demand thinner form factors and higher efficiency, the evolution of semiconductor solutions has moved beyond mere performance enhancement; thermal generation and heat‑dissipation characteristics have also become critical considerations in semiconductor design. Thermal generation is primarily influenced by chip manufacturing processes and temperature‑control algorithms, while heat‑dissipation performance can be optimized through material selection and product‑level structural design.

　　Here, we’d like to introduce chemical vapor deposition (CVD) diamond as a cutting-edge thermal management solution, particularly well suited for RF power amplifiers. CVD diamond heat spreaders have been shown to reduce overall package thermal resistance, delivering performance that far surpasses that of other commonly used materials today. So, how does CVD diamond outperform conventional thermal‑management materials?

　　As a close relative of diamond, diamond—possessing the properties of elemental carbon—is truly remarkable, boasting the highest known thermal conductivity, stiffness, and hardness, while also exhibiting high optical transmittance across a broad wavelength range, a low coefficient of thermal expansion, and low density. These exceptional characteristics make diamond an ideal material for thermal management applications, capable of significantly reducing thermal resistance.

　　To synthesize diamond required for thermal management applications, the first step is to select the most appropriate deposition technique. Microwave-assisted CVD offers superior control over grain size and grain boundaries, enabling the production of high‑quality, highly reproducible polycrystalline diamond with thermal conductivities tailored to specific application requirements. Today, CVD diamond has been commercialized, with thermal conductivities ranging from 1,000 to 2,000 W/m·K available in various grades. Moreover, CVD diamond exhibits fully isotropic properties, enhancing thermal conductivity in all directions.

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How to Improve the Mechanical Strength of Diamond Grinding Wheels

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CVD Diamond: A Superheat-Dissipating New Material Born to Reduce Fever

As end products increasingly demand thinner form factors and higher efficiency, the evolution of semiconductor solutions has moved beyond mere performance enhancement; thermal management and heat dissipation have also become critical considerations in semiconductor design. Heat generation is primarily influenced by chip manufacturing processes and temperature-control algorithms, while heat‑dissipation performance can be optimized through material selection and product‑level structural design.

How to Improve the Mechanical Strength of Diamond Grinding Wheels

To enhance the heat resistance and mechanical strength of phenolic resin binders in diamond grinding wheels, various fillers are incorporated during the preparation of resin-bonded abrasives to modify the phenolic resin. For example, adding copper powder improves the resin’s thermal stability; incorporating zinc oxide, chromium oxide, and similar compounds strengthens the resin’s mechanical properties; and introducing soft materials such as flaky graphite or molybdenum disulfide significantly enhances the grinding performance of resin-bonded tools.