writer：王慧奇
keywords：气相硼，催化石墨化，炭纤维，微结构，力学性能
source：期刊
specific source：New Carbon Mater 2015;30(2):122-7.
Issue time：2015年
Boron鄄catalyzed graphitization of carbon fibers was conducted in a boron鄄doped graphite crucible at 2 000 益, in which
boron diffused from the crucible to the carbon fibers to act as the catalyst. The microstructures, boron contents and mechanical prop鄄
erties of the resulting carbon fibers were characterized by Raman spectroscopy, scanning electron microscopy, X鄄ray photoelectron
spectroscopy, high鄄resolution transmission electron microscopy and mechanical tests. Results indicate that boron has a significant
impact on the fiber microstructure. Raman spectra indicate the presence of distortions in the graphitic layers. The tensile modulus of
boron鄄doped carbon fibers obviously increases with boron content and the tensile strength is also higher than that of the original car鄄
bon fibers at boron concentrations between 0. 58 to 0. 68 at. % .