High-strength, creep-resistant Y{sub 2}O{sub 3}-stabilized cubic ZrO{sub 2} single crystal fibers
- Case Western Reserve Univ., Cleveland, OH (United States); and others
Y{sub 2}O{sub 3}-stabilized cubic ZrO{sub 2} (Y-CSZ) single crystal fibers have much higher thermal expansion coefficients than other possible oxide fibers and thus can serve as viable reinforcements for metallic- and intermetallic-matrix composites; furthermore, they offer good isotropic creep resistance. Data is presented for [001] ZrO{sub 2} single crystal fibers (9.5-21 m/o Y{sub 2}O{sub 3}) grown by the laser heated floating zone process; high temperature strengths were measured as a function of composition and the variation in tensile strength with temperature was measured for 21 m/o Y-CSZ fibers. Strengths of {approximately}2.0 GPa at -196{degrees}C, {approximately}1.5 GPa at room temperature and {approximately}500 MPa at 1400{degrees}C were achieved. All fibers failed in a brittle manner from surface or near-surface flaws.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Materials Science and Engineering
- OSTI ID:
- 443383
- Report Number(s):
- LA-SUB-94-69; ON: DE97002581; TRN: 97:001175-0002
- Resource Relation:
- Other Information: PBD: 20 Jun 1993; Related Information: Is Part Of Characterization and evaluation of Y{sub 2}O{sub 3}-stabilized cubic ZrO{sub 2} for single crystal fibers. Final report; PB: 32 p.
- Country of Publication:
- United States
- Language:
- English
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