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Atomic level analysis of carbon fibers by the scanning atom probe
Author(s) -
Nishikawa Osamu,
Taniguchi Masahiro
Publication year - 2014
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.5695
Subject(s) - mass spectrum , analytical chemistry (journal) , hydrogen atom , chemistry , carbon fibers , hydrogen , atom (system on chip) , mass spectrometry , carbon nanotube , graphite , atomic mass , materials science , atomic physics , nanotechnology , composite material , physics , organic chemistry , composite number , alkyl , chromatography , computer science , embedded system
Carbon fibers made from polyacrilonitrile and pitch were mass analyzed utilizing the unique capability of the scanning atom probe, atom‐by‐atom mass analysis. The most significant mass peak is COH showing that these fibers contain large amounts of oxygen and hydrogen. Unexpected findings are the detection of C 27 OH and C 50 ONH ions from polyacrilonitrile‐based fibers and C 27 OH and 7 mass peaks from C 30 OH 5 to C 37 OH 5 from pitch‐based fibers. The mass difference of the seven mass peaks is 14 amu possibly because of the number of bound CH 2 and nitrogen atom. These mass spectra are not found by analyzing other carbon specimens such as carbon nanotubes, graphite, and graphens. Uniqueness of the mass spectra could be due to the 1different fabrication process. The relation of the mass spectra and the tensile strength and modulus of the fibers is discussed. Copyright © 2014 John Wiley & Sons, Ltd.