NASA NTRS · 19940010070
Processing and testing of high toughness silicon nitride ceramics
Abstract
High toughness silicon nitride ceramics were processed with the addition of small quantities of beta-Si3N4 whiskers in a commercially available alpha-Si3N4 powder. These whiskers grew preferentially during sintering resulting in large, elongated beta-grains, which acted to toughen the matrix by crack deflection and grain pullout. The fracture toughness of these samples seeded with beta-Si3N4 whiskers ranged from 8.7 to 9.5 MPa m(exp 0.5) depending on the sintering additives.
Keep this discovery
Explore connections, maps & timelines
Tikare, Veena, Sanders, William A., Choi, Sung R.. 1993-09-01. Processing and testing of high toughness silicon nitride ceramics. https://ntrs.nasa.gov/citations/19940010070
Cite the original work for its findings. Save a collection to share your selection of sources.