Diamonds "enter the game" in the new energy vehicle sector, with innovative applications on the way.

Release date:

2023-12-14

全球碳减排行动深入，交通领域电气化驱动新能源汽车数量高增，与此同时新型材料的出现为新能源汽车的推广带来了优势条件。金刚石作为具有独特物理化学特性的新型材料，也将在新能源汽车领域上广泛应用与助力。

Global efforts to reduce carbon emissions are gaining momentum, with electrification in the transportation sector driving a significant surge in the number of new energy vehicles. Meanwhile, the emergence of innovative materials is creating favorable conditions for the widespread adoption of these eco-friendly cars. As a next-generation material boasting unique physical and chemical properties, diamond is poised to play a key role in advancing and enhancing the performance of new energy vehicles.

IGBT Power Module's Next-Generation Cooling Material—Diamond Heat Sink Sheets

The most critical component in the motor-drive system of new-energy vehicles is the IGBT. The power conductive terminals of IGBT modules used in electric vehicles need to handle large currents of several hundred amperes, placing high demands on both electrical and thermal conductivity. To significantly enhance IGBT power density, cooling performance, and long-term reliability, an efficient thermal management solution is particularly critical.

Diamond materials boast remarkably superior thermal conductivity and electrical properties, with no significant drawbacks. Their thermal conductivity can reach up to 2000 W/m·K—five times higher than that of copper or silver—while still maintaining excellent insulating properties. This unique combination enables diamond-based devices to handle significantly higher power levels. As a result, electronic systems incorporating diamond microwave power devices could potentially eliminate bulky, heavy cooling modules altogether, paving the way for lighter, more compact designs. Moreover, when thermal conductivity requirements fall within the range of 1000–2000 W/(m·K), diamond emerges as the ideal—and often the only—thermal sink material available. For instance, in IGBT power modules where efficient heat dissipation is critical, diamond heat sinks’ unparalleled thermal conductivity ensure highly effective cooling performance.

Increased Application of Diamond Tools in the Automotive Industry

In recent years, with the widespread adoption of lightweight materials—such as aluminum alloys and composite materials—in the automotive manufacturing industry, diamond tools (PCD) have demonstrated clear advantages in machining these materials. PCD tools are crafted by sintering polycrystalline diamond tips onto a hard alloy substrate under high temperature and pressure. This process combines diamond’s exceptional properties—like its ultra-high hardness, outstanding thermal conductivity, low friction coefficient, minimal thermal expansion, weak affinity for both metals and non-metals, high elastic modulus, lack of cleavage planes, and isotropic behavior—while also leveraging the superior strength and durability of hard alloys.

In certain machining processes for transmission housing components, the conventional carbide boring tools have been replaced with diamond tools, resulting in tool life increasing dramatically—sometimes reaching tens of thousands of parts. The economic benefits are clearly significant. Today, diamond tools are essential for processing components in new-energy vehicles, including motor housings, shaft parts, battery boxes, and differentials.

Diamond quantum sensors can extend the driving range of electric vehicles by 10%.

Accurately predicting the remaining driving range of electric vehicles is challenging, as current battery current sensors struggle to provide precise estimates of battery charge levels. This is because the peak current in EV batteries can easily reach hundreds of amperes, while the average current typically hovers around just 10 amps. Unfortunately, most conventional sensors, when designed to handle such high dynamic ranges, lack the necessary precision—often falling short by several tens of milliamperes. As a result, the state-of-charge can only be estimated with an approximate margin of about 10%, leading to inefficient battery usage overall.

Researchers at Tokyo Institute of Technology have proposed a solution to address the inefficiencies of electric vehicles. In their study published in *Scientific Reports*, the team reported a novel approach based on The detection technology of diamond quantum sensors can estimate battery charge with 1% accuracy when measuring high currents in electric vehicles. 。

Diamond quantum sensors made from diamonds are being applied to new-energy vehicles, offering a current measurement range of ±1,000 A with an accuracy of 10 mA. These sensors can effectively reduce the onboard battery capacity of electric vehicles and improve energy efficiency—by minimizing weight, for instance—leading to a significant decrease in CO₂ emissions within the transportation sector. ₂ Emissions reductions that support global energy conservation, emission cuts, and sustainable green development.

Diamond Coating

Diamond coating refers to the combination of metal tools with a diamond film. With advancements in technology, diamond-coating technology continues to innovate and improve, leading to its effective application in industries such as automotive, aerospace, metal components, and cutting tools. For instance, incorporating nanodiamonds into automotive coatings for toughening and reinforcement significantly enhances the impact resistance of the coating film.

Diamond powers electric vehicles

Scientists at Lawrence Livermore National Laboratory (LLNL) have published a study in Applied Physics Letters, proposing the use of diamonds as ultrawide-bandgap semiconductors to more efficiently power grids, locomotives, and even electric vehicles.

The study also indicates that these diamond switches can be used in energy transmission systems—specifically, the team demonstrated their ability to power megawatt-scale RF generators, though further optimization is needed to enhance the diamonds' high-frequency response capabilities.

In short, diamonds have vast potential for application in the new energy vehicle industry, and as related technologies continue to advance, their full potential will be further unlocked.

Widespread adoption of diamond semiconductors is just around the corner.

The world's first 100mm single-crystal diamond wafer

Widespread adoption of diamond semiconductors is just around the corner.

The world's first 100mm single-crystal diamond wafer

Latest News

2026-01-09

清华大学团队：互连结构对金刚石/铜复合材料热导率的增强效应

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2025-09-28

Pore-Size Control in Porous Magnesium Rings and Its Impact

As a functional material, the performance of porous magnesium rings is closely tied to their internal pore structure. Porosity, a key parameter that measures the proportion of void space within the material, directly influences the material’s physicochemical properties and determines its suitability for various practical applications. By carefully controlling porosity, it’s possible to achieve targeted optimization of material performance to meet specific requirements. From a mechanical perspective, changes in porosity alter the material’s density distribution and load-bearing capacity. Higher porosity reduces the apparent density, leading to lighter overall weight—but it may also compromise compressive strength. This characteristic makes such materials particularly valuable in applications where lightweight design is critical. However, in scenarios involving significant mechanical loads, maintaining structural integrity requires precise control over pore size and distribution. On the functional level, porosity creates a network of pathways that facilitate efficient mass transfer. Increasing porosity appropriately can enhance a material’s adsorption capacity and permeability, making it ideal for applications like filtration or as a catalyst support. Meanwhile, the presence of interconnected pores promotes rapid diffusion of electrolytes or reaction media, which is crucial for improving the performance of electrochemical devices. On the downside, excessively high porosity might weaken the material’s corrosion resistance, potentially leading to localized corrosion issues, especially in humid environments. Ultimately, the choice of fabrication process plays a pivotal role in precisely tuning the porosity of these materials.

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2025-09-22

Storage precautions for porous magnesium rings

Porous magnesium rings, as a special type of metallic material, are widely used in industries and medical fields. Due to their unique physical structure and chemical properties, careful attention must be paid to environmental conditions during storage to ensure that the material’s performance remains unaffected. **Storage Environment Requirements:** Porous magnesium rings have stringent requirements for their storage environment, particularly regarding factors such as humidity, temperature, and exposure to light. The relative humidity in the storage area should be kept below 65%, and materials should never be stored outdoors or allowed to come into direct contact with rainwater or dew. If the warehouse floor is concrete, it’s essential to lay down a moisture-proof cushion layer to prevent ground moisture from seeping into the material. In terms of temperature, it’s recommended to maintain conditions between -5°C and 35°C, avoiding prolonged exposure to high temperatures (above 40°C) or extreme cold combined with freezing-thawing cycles (below -10°C). High temperatures can accelerate the aging of the surface oxide layer, while low temperatures paired with moisture may lead to condensation or even ice formation on the surface, potentially causing corrosion once melted. Additionally, the warehouse should be well-ventilated naturally, but avoid exposing the material to strong, direct winds. Direct sunlight should also be avoided. If temporary outdoor storage is unavoidable for up to 72 hours, the material must be carefully covered with a double layer of shade cloth and waterproof tarpaulin. **Moisture-Proof and Corrosion-Resistant Measures:** Moisture protection is critical when storing porous magnesium rings. Use tightly sealed packaging materials during storage, and regularly inspect containers to ensure they remain airtight and free from leaks or damage. After opening previously used packaging, promptly reseal it to maintain its protective integrity.

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2025-09-16

Process for Preparing Porous Magnesium Rings and Performance Optimization

Porous magnesium rings, as a bio-material with a unique structural design, have demonstrated significant application potential in both medical and industrial fields. Currently, optimizing their preparation processes and enhancing their performance have become key research directions in materials science. Among the fabrication techniques, powder metallurgy is currently one of the most widely used approaches. This method involves mixing magnesium powder with pore-forming agents, followed by compression molding and sintering to create the desired porous structure. Crucial process parameters, such as sintering temperature and duration, directly influence the material’s porosity and mechanical strength. Another popular method is the template-based approach, which utilizes removable template materials to precisely define the pre-designed pore architecture, allowing for more accurate control over pore size distribution. Additionally, the integration of 3D printing technology has opened up new possibilities for producing complex-structured porous magnesium rings, enabling customized pore designs through layer-by-layer additive manufacturing. Performance optimization primarily focuses on three key dimensions. First, structural characteristics are carefully tuned by adjusting the ratio and particle size of the pore-forming agents, resulting in a wide range of porosities—from 20% to 80%—with typical pore sizes ranging between 100 and 500 microns. This highly controllable porous structure not only ensures lightweight properties but also lays a solid foundation for advanced functional applications. Second, mechanical performance is significantly improved by incorporating appropriate alloy elements or employing hot isostatic pressing, boosting compressive strength to levels suitable for medical implant applications.

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