Surface coating of filaments in a tow, e.g. for ceramic reinforcement fibers, includes spreading filaments in an electrostatic field

摘要

Surface coating of the filaments in a continuous tow is carried out while passing through an electrostatic field of 1 to 1000 kV, to spread the filaments. The treatment can be a wet chemical treatment, use chemical or physical vapor deposition, or involve an electro-chemical process.