2results about How to "Increase temperature coefficient" patented technology

This invention provides a microwave dielectric ceramic material and its preparation method for low ESR capacitors, belonging to the field of ceramic materials technology. By optimizing the composition and ratio of the main material, sintering aid, and modifying additives, this invention achieves both low dielectric constant and low ESR (high Q value) while maintaining an extremely stable temperature coefficient, effectively solving the problem of simultaneously achieving dielectric performance and temperature stability in existing technologies. The microwave dielectric ceramic material provided by this invention can be sintered in a reducing atmosphere and can be used to prepare low ESR, high Q value, and narrow temperature coefficient copper electrode multilayer ceramic capacitors, avoiding silver migration phenomenon in silver-internal electrode MLCCs, effectively improving device reliability and lifespan. It has broad application prospects in high-end fields such as communication base stations, radar, medical equipment, military industry, and AI servers, and the microwave capacitors prepared from it have significant practical value and market application prospects.

The application discloses a high-coercivity neodymium-iron-boron magnet and a preparation method thereof. By introducing manganese elements with a specific content and making the manganese elements and other components produce a synergistic effect under a specific sintering and tempering process, the intrinsic coercivity of the magnet is significantly improved, is 30-50% higher than that of a conventional magnet, and reaches 3500-4000 kA / m. Meanwhile, the magnet has excellent high-temperature stability and corrosion resistance, and is particularly suitable for 3C electronic products with strict requirements on volume and performance.