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由气相碳氢化合物热分解可以制备炭纤维,这种工艺有大幅度降低成本的潜力。气相生长的炭纤维显示了热解炭的许多特性。例如,它们具有层状显微结构,其石墨面平行于纤维轴,具有高度的择优取向。由于纤维是由催化形成的细丝化学气相沉积而加粗的,其横截面结构类似于树干截面的年轮环。纤维的可石墨化性很高,热处理超过2500℃就能形成三维有序结构,这种结构使得它具有单晶石墨那样的电、磁、热导性质。由于这种纤维的显微结构均匀,所以对于复合材料工程来说,具有许多潜在的优点。
Carbon fibers can be produced by the thermal decomposition of gaseous hydrocarbons, which has the potential to dramatically reduce costs. Vapor grown carbon fibers show many of the properties of pyrolytic carbon. For example, they have a layered microstructure with a graphite surface that is parallel to the fiber axis and has a high degree of preferred orientation. Because the fibers are thickened by catalyzed filament chemical vapor deposition, the cross-sectional structure resembles that of a tree trunk section. Fiber graphitization is very high, heat treatment of more than 2500 ℃ to form a three-dimensional ordered structure, this structure makes it as monocrystalline graphite that electrical, magnetic, thermal conductivity properties. Due to the homogeneous microstructure of the fibers, there are many potential advantages for composite engineering.