Observation of the Surface Morphology of Boron-Doped Diamond After Heating

Release date:

2025-07-12

Observe two types using a scanning electron microscope Diamond The morphology of the single crystal after heating is shown in Figure 5. As can be seen, conventional diamond single crystals suffer severe damage to their structural integrity upon heating, with large-scale thermal etch pits appearing on the crystal surface, along with extensive cracks running across the crystal. A closer inspection via local magnification reveals that the heat-induced cracks in conventional diamonds are approximately 5–10 μm wide. Clearly, by the time the temperature reaches 1000°C, significant oxidation has already occurred in the conventional diamond single crystals.

In contrast, Boron-doped diamond After being heated, the single crystal retained its relatively intact crystalline structure, though its surface roughness increased slightly. Notably, no significant signs of oxidative damage were observed. Magnified images revealed mild surface oxidation occurring locally on the boron-doped diamond single crystal, characterized by distinct wrinkles and small-scale oxide pits. These experimental observations align closely with the results from thermal analysis, which indicated that surface oxidation in the boron-doped diamond single crystal begins only at around 1000°C—and even then, the oxidation remains relatively minor.

The first internationally recognized standard in the diamond sector, spearheaded by China, has been officially released! Henan United Precision Materials has also unveiled the globally significant new standard for nanodiamond applications—another milestone led by Chinese expertise!

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

Learn more details MORE

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.

Learn more details MORE

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.

Learn more details MORE

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.

Learn more details MORE

Get a Free Consultation

If you're interested in our products, please contact us today for more detailed information.

Liaocheng Xinko Pyrophyllite Co., Ltd. is a company specializing in the professional manufacturing and processing of products such as automatic four-column hydraulic presses, diamond synthesis components, pyrophyllite stones, magnesia rings/cups, and graphite tubes.

+8615666852878

734902425@qq.com

Liaocheng High-Tech Industrial Development Zone, Bayiliang Village, North End, Jiuzhou Subdistrict Office

Business license