Mechanical Properties

FFF SiC Ni Nicalon-Type S Sylramic
Single fiber tensile, in GPa 3-6 2-3 2-3
Single fiber creep: @ 1500oC, 500 MPa, in air 170 hours, no failure 148 hours time to failure
Single fiber creep:  24 hour hold at 1500C, cycle down to RT, 500 MPa, in air 11 cycles after 100 hour hold, 364 hours total at peak temp
0.96% creep strain
Acetylene torch exposure: 1625oC, held taut across rack > 2 1/2 hours < 10 minutes < 2 minutes


Reference #1

A. Seshadri, B. Philips, A. Dave, S. Harrison, J. Pegna, and K. Shirvan,

“Hydrothermal corrosion of laser printed SiC fibers under extreme environment, Journal of Nuclear Materials”, Journal of Nuclear Materials 548, (2020),

Reference #2:

S. Harrison, J. Schneiter, J. Pegna, E. Vaaler, R. Goduguchinta, and K. Williams, “High-Temperature Performance of Next-Generation Silicon Carbide Fibers for CMCs,” Materials Performance and Characterization 10, no. 2 (2021): 207–223.

Reference #3

Single Fiber Creep Performance of Silicon Carbide Materials, Americna Ceramic Society ICACC 2020 Conference, January 2020 / Mechanical Behavior Session