Abstract
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 language | English (US) |
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Pages (from-to) | 590-599 |
Number of pages | 10 |
Journal | Ceramic Engineering and Science Proceedings |
Volume | 14 |
Issue number | 7 -8 pt 1 |
DOIs | |
State | Published - 1993 |
Event | Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials - Cocoa Beach, FL, USA Duration: Jan 10 1993 → Jan 15 1993 |
All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry