Nyckeltillämpningar av bornitridkeramik i elektrisk framdrivningsteknik och plasmapropeller
Propulsion technology in space exploration has always faced challenges. Traditional chemical propellants require carrying a significant amount of fuel, which not only increases costs but also limits 
the mission capabilities of spacecraft. To overcome these limitations, electric propulsion technology has emerged as a promising alternative. Among them, the Hall thruster, as a type of plasma thruster, utilizes a strong electric field to accelerate ions and achieve attitude control and orbit raising. It offers precise and adjustable thrust, making it suitable for orbit maintenance in microgravity and low atmospheric drag environments. To achieve reliable Hall thrusters, the choice of critical component materials is crucial.
In this regard, boron nitride ceramic plays a crucial role. Boron nitride ceramic is an excellent structural material with various outstanding properties, making it an ideal choice in electric propulsion technology and plasma thrusters.
Firstly, boron nitride ceramic exhibits exceptional high-temperature resistance, enabling it to withstand extreme operating conditions. Its high melting point and low coefficient of thermal expansion allow boron nitride to maintain structural stability under high temperatures, minimizing deformation or cracking. This reliability enables boron nitride ceramic to operate effectively in high-temperature plasma environments and provide stable thrust.
Secondly, boron nitride ceramic demonstrates excellent electrical insulation properties, effectively preventing the conduction of electrical current. In Hall thrusters, ionization and acceleration of plasma occur within the discharge chamber, necessitating the use of materials with good insulation properties to prevent current leakage or interference. The superior insulation performance of boron nitride ceramic ensures the safe operation and stability of the electric propulsion system.
Furthermore, boron nitride ceramic exhibits outstanding corrosion resistance. Plasma thrusters involve ion sputtering and chemical corrosion environments, and boron nitride ceramic is capable of resisting the erosion caused by these corrosive substances, thereby extending the thruster's operational lifespan.
Boron nitride ceramic plays a key role in electric propulsion technology and plasma thrusters, providing essential support for the performance and reliability of the thrusters. Its excellent high-temperature resistance, good insulation properties, and corrosion resistance make it an ideal material choice. The widespread application of boron nitride ceramic contributes to the development of electric propulsion technology, offering a reliable and efficient propulsion method for space exploration. By harnessing the exceptional characteristics of boron nitride ceramic, electric propulsion technology and plasma thrusters achieve extended operational lifetimes, higher performance, and a broader range of space missions, propelling the magnificent stage of human exploration in the universe.
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