Ut-battelle, Inc.

John Daniel Kennedy Rivard

Gerard Michael Ludtka

Amit Kumar Naskar

Felix Leonard Paulauskas

Soydan Ozcan

Gail Mackiewicz Ludtka

Claude Clifford Eberle

Mohamed Gabr Abdallah

Method for the preparation of carbon fiber from fiber precursor, wherein the fiber precursor is subjected to a magnetic field of at least 3 Tesla during a carbonization process. The carbonization process is generally conducted at a temperature of at least 400&#xb0; C. and less than 2200&#xb0; C., wherein, in particular embodiments, the carbonization process includes a low temperature carbonization step conducted at a temperature of at least or above 400&#xb0; C. or 500&#xb0; C. and less than or up to 1000&#xb0; C., 1100&#xb0; C., or 1200&#xb0; C., followed by a high temperature carbonization step conducted at a temperature of at least or above 1200&#xb0; C. In particular embodiments, particularly in the case of a polyacrylonitrile (PAN) fiber precursor, the resulting carbon fiber may possess a minimum tensile strength of at least 600 ksi, a tensile modulus of at least 30 Msi, and an ultimate elongation of at least 1.5%.

Magneto-carbonization method for production of carbon fiber, and high performance carbon fibers made thereby

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Washington, DC, United States of America

John Daniel Kennedy Rivard