Chapter 85. Effect of Cleaning and Abrasion-Induced Damage on the Room Temperature Tensile Strength of Sapphire Fibers
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1993 The American Ceramic Society
Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8
How to Cite
Trumbauer, E. R., Hellmann, J. R., Shelleman, D. L. and Koss, D. A. (1993) Effect of Cleaning and Abrasion-Induced Damage on the Room Temperature Tensile Strength of Sapphire Fibers, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch85
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1993
Print ISBN: 9780470375266
Online ISBN: 9780470314180
Room temperature tensile strengths of sapphire fibers were evaluated in the as-received condition (Dow MethocelTM sizing applied by Saphikon), after flame cleaning, after cold water washing, and after a chemical cleaning procedure. Flame cleaning yielded an approximately 30% degradation in strength compared to the other surface treatments. Fractographic analysis revealed surface deposits at the failure origins of flame cleaned fibers; EDS analysis revealed the presence of Na, CI, Ca, Fe, and Ce impurities in the deposits. Tensile strengths were also evaluated for unsized fibers in the as-received condition, after flame cleaning, and after self-abrasion. Flame cleaning of unsized fibers yielded a less significant strength degradation than was observed for sized fibers and self-abrasion resulted in a 30% degradation in strength. Results indicate that use of sizing is imperative for preventing fiber damage during handling, but that improved procedures for sizing removal are required.