Thin graphite skin on glass-like carbon fiber prepared at high temperature from cellulose fiber

摘要: as precursor fibers. The fibers were produced by Lenzing Co., Australia and supplied Moririn Co. Ltd., the trade name is Lyocell. diameters of around 3–4 lm. These heated to 900 C with a heating rate 2 C/min in nitrogen atmosphere using an infrared image furnace kept at this temperature for h. C-treated further 3200 20 argon graphite resistance 10 min. Scanning electron microscope (SEM) observations carried out surfaces cross sections carbon Transmission (TEM) made A 0 X-ray diffraction (XRD) measurement was pulverized sample CuKa radiation silicon powder internal standard. Maximum transverse magnetoresistance Dq/q measured single filament fiber 77 K fields up 1 T. In order examine surface structure fiber, first Raman spectra some filaments room air 514.5 nm line ion laser. SEM images section perpendicular axis are shown Fig. 1. 2–3 Even after heat treatment C, granular texture being characteristic glass-like [8] observed on section.