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1、碳化钨镍钴钼氧化铅系高温自润滑金属陶瓷材料的综合性能研究Carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-temperature self-lubricating metal ceramic materials have become a hot research topic in the field of cutting-edge materials due to their excellent high-temperature lubrication properties and wear resistance. In thi
2、s paper, the comprehensive properties of this material were studied.The carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-temperature self-lubricating metal ceramic material was prepared by hot pressing at a pressure of 30MPa under a temperature of 1350. The microstructure and phase compositi
3、on of the material were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD).The results showed that the material had a dense microstructure, and its main phase composition was carbon tungsten, nickel tungsten carbide, cobalt tungsten carbide, molybdenum carbide and lead o
4、xide. The material had excellent high-temperature lubrication performance and wear resistance.The tribological performance of the material was further evaluated by a ball-on-disc friction and wear tester under different temperatures and loads. The results showed that the material had good lubricatio
5、n performance and wear resistance under high-temperature and high-load conditions. The wear rate of the material decreased with increasing temperature, indicating better high-temperature lubrication performance.In addition, the thermal conductivity and thermal expansion coefficient of the material w
6、ere also measured, and the results showed that the thermal conductivity of the material was relatively high, while the thermal expansion coefficient was relatively low, indicating that the material had good thermal stability.In summary, the carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-te
7、mperature self-lubricating metal ceramic material has excellent high-temperature lubrication performance and wear resistance. Its comprehensive performance is superior to traditional metal materials and ceramics, and it has broad application prospects in high-temperature and high-load fields such as
8、 aerospace and energy.The outstanding properties of carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-temperature self-lubricating metal ceramic materials have attracted increasing attention from researchers and engineers. The potential applications of this material are broad and promising, i
9、n particular in high-temperature and high-load environments, which are commonly encountered in aerospace, energy, and other industries.The excellent high-temperature lubrication performance of this material is mainly attributed to the self-lubricating mechanism of lead oxide. Lead oxide can decompos
10、e into lead and oxygen under high temperature, and the lead can form a lubricating film on the surface of the material, which effectively reduces the coefficient of friction and wear. The addition of tungsten carbide, nickel tungsten carbide, cobalt tungsten carbide and molybdenum carbide can improv
11、e the hardness and wear resistance of the material.Furthermore, the high thermal conductivity and low thermal expansion coefficient of this material make it an ideal candidate for applications in high-temperature fields such as gas turbines, space propulsion and nuclear reactors. It can withstand hi
12、gh thermal loads and maintain stable performance in harsh environments.In summary, carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-temperature self-lubricating metal ceramic materials have great potential for various applications in high-temperature and high-load environments. Further resea
13、rch and development are needed to optimize its properties and improve its performance in specific application scenarios.In addition to its outstanding properties for high-temperature and high-load applications, carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-temperature self-lubricating met
14、al ceramic materials offer several other advantages. For example, the high strength and rigidity of the material allow it to withstand various types of mechanical stress, and the excellent corrosion resistance means that it can be used in harsh chemical environments.The precise composition and micro
15、structure of this material can be adjusted to meet specific requirements for different applications. For instance, the addition of other elements such as titanium, chromium, and zirconium can enhance the mechanical and thermal properties of the material. The fabrication process can also be tailored
16、to produce parts with different shapes, sizes, and properties.One potential application for carbon tungsten-nickel-cobalt-molybdenum-lead oxide high-temperature self-lubricating metal ceramic materials is in the manufacturing of bearings, seals, and other components for gas turbines. These components operate at high temperatures and high speeds, often in harsh and corrosive environments. The self-lubricating properties of the material would reduce f
