Improved Graphite Fiber.
Abstract
The successful demonstration of the strengthening of high modulus graphite fibers by coating and alloying with boron was achieved on this program. Fiber strengths as high as 473 x 1000 psi at 63 million psi modulus have been obtained. An arc-plasma heating process, with temperatures in excess of 3000 C, has been utilized for strengthening graphite fiber. Chemical treatments on graphite fibers were employed to increase their strengths. Successful intercalation of Br2, IC1, FeC13 and MoC15 into graphite fibers was demonstrated with no significant improvement in strengths observed. The application of a small diameter PAN fiber to produce graphite fibers of much superior properties was initiated. Design plans have been drawn up for construction of a pilot plant capable of processing one pound per hour of improved graphite fibers. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 12, 1978
- Accession Number
- ADA065163
Entities
People
- Dan Nelson
- David Jarmon
- Janet Hotham
- Roger Pepper