Compared to natural diamond, boron diamond has controllable conductivity, ranging from an insulator to a p-type semiconductor, and can even become a good conductor depending on the concentration of boron doping. This property makes BDD the preferred material for electrochemical sensors, electrolytic cell electrodes, and advanced electronic devices.
Boron diamond retains the basic chemical inertness of diamond, exhibiting excellent corrosion resistance to many strong acids, strong bases, and organic solvents. However, compared to undoped diamond, BDD shows better catalytic activity and corrosion resistance in electrochemical applications.
Boron diamond inherits the high hardness and wear resistance of diamond. Though doping may slightly affect its hardness, it remains an extremely hard material, suitable for wear-resistant coatings and high-end cutting tools.
Boron diamond has excellent thermal stability and can maintain its structure and performance at high temperatures, making it suitable for high-temperature applications.
BDD has good biocompatibility, meaning it can be used in medical implants and biosensors for various medical applications.
Depending on the concentration of boron, the optical transparency of boron diamond may vary, but generally, moderate doping does not significantly affect its transparency. Thus, it has potential applications in optical windows and laser technology.
Boron diamond is particularly suitable for use as an electrocatalyst, especially in fields such as water treatment, organic synthesis, and energy conversion (e.g., fuel cells) because it can effectively promote various electrochemical reactions.
Boron diamond, due to its combination of the high hardness of diamond and improved conductivity from doping, is suitable for specific machining and application environments. Boron diamond is typically used in the processing of the following situations or materials:
Boron diamond, due to its conductivity, can be used as electrode material in EDM, especially in the machining of molds and components that require extremely high precision and surface finish.
In the semiconductor industry, boron diamond can be used as a tool for cutting or grinding silicon wafers and other semiconductor materials, as it not only has high hardness but also its conductivity aids in control and efficiency during electrochemical processing.
For precision parts that require extremely high surface quality and minimal damage, such as optical components, hard disk drive parts, and gemstones, boron diamond abrasives and tools are used due to their excellent wear resistance and control.
Boron diamond films can be used as surface coatings for certain mechanical parts to improve wear resistance, corrosion resistance, and service life, especially for parts operating in harsh environments.
Due to the adjustable thermal properties from boron doping, certain ratios of boron diamond materials can be used as heat sinks or thermal dissipation materials, particularly in microelectronics and high-power devices.
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