Effect of cleaning and abrasion-induced damage on the room temperature tensile strength of sapphire fibers

E. R. Trumbauer, J. R. Hellman, D. L. Shelleman, D. A. Koss

Research output: Contribution to journalConference article

2 Scopus citations


Room temperature tensile strengths of sapphire fibers were evaluated in the as-received condition (Dow MethocellTM 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, Cl, 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.

Original languageEnglish (US)
Pages (from-to)590-599
Number of pages10
JournalCeramic Engineering and Science Proceedings
Issue number7 -8 pt 1
StatePublished - Jul 1 1993
EventProceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials - Cocoa Beach, FL, USA
Duration: Jan 10 1993Jan 15 1993


All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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