Journal Published Online: 14 April 2021
Volume 10, Issue 2

High-Temperature Performance of Next-Generation Silicon Carbide Fibers for CMCs

CODEN: MPCACD

Abstract

Single-fiber (monofilament, not twisted tow) high-temperature creep performance of refractory ceramic compositions is a fundamental material property that must be examined and understood for the successful deployment of ceramic matrix composite material systems in demanding applications. A novel creep testing approach was devised utilizing an innovative approach to fiber sample attachment and used to evaluate the creep behavior of Free Form Fibers’ LP-30SC and Nippon Carbon-based Hi-Nicalon Type S (HNS) silicon carbide fiber products. The testing apparatus, analytical basis for the creep calculations, including the sample gage length, and collected data are presented. Test conditions include a range of peak hold temperatures, from 1,300°C to 1,500°C, gas environments, and hold time patterns at the peak temperature. Clear differences in resistance to creep degradation were evident between the LP-30SC and HNS fibers, as the LP-30SC demonstrated strong resiliency to high temperature exposure while the HNS showed performance degradation consistent with oxidation attack.

Author Information

Harrison, Shay
Free Form Fibers, Saratoga Springs, NY, USA
Schneiter, John
Free Form Fibers, Saratoga Springs, NY, USA
Pegna, Joseph
Free Form Fibers, Saratoga Springs, NY, USA
Vaaler, Erik
Free Form Fibers, Saratoga Springs, NY, USA
Goduguchinta, Ramkiran
Free Form Fibers, Saratoga Springs, NY, USA
Williams, Kirk
Free Form Fibers, Saratoga Springs, NY, USA
Pages: 17
Price: $25.00
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Details
Stock #: MPC20200131
ISSN: 2379-1365
DOI: 10.1520/MPC20200131