Fabrication and formation mechanism of NbC_x-C three-dimensional netted fibers

摘要

Micrometer NbCx-C three-dimensional netted fibers were synthesized by the carbothermal method under 0. 1 MPa of N, ambient atmosphere at a relatively low temperature. Raw materials were commercial powders of Nb205(99.95%), reactive carbon(99.99%), NaC1(99.95%) and sucrose(99.94%). The relationship of the fabrication processing with the composition, crystal structure and morphology of fibers was investigated. The formation mechanism was also proposed and discussed.