Effects of Steam Environment on Fatigue Behavior of Two SiC/[SiC+Si3N4] Ceramic Composites at 1300°C
Document Type
Article
Publication Date
10-2011
Abstract
The fatigue behaviors of two SiC/[SiC+Si3N4] ceramic matrix composites (CMC) were investigated at 1,300°C in laboratory air and in steam. Composites consisted of a crystalline [SiC+Si3N4] matrix reinforced with either Sylramic™ or Sylramic-iBN fibers (treated Sylramic™ fibers that possess an in situ BN coating) woven in a five-harness satin weave fabric and coated with a proprietary boron-containing dual-layer interphase. The tensile stress–strain behaviors were investigated and the tensile properties measured at 1,300°C. Tension–tension fatigue behaviors of both CMCs were studied for fatigue stresses ranging from 100 to 180 MPa. The fatigue limit (based on a run-out condition of 2 × 105 cycles) in both air and steam was 100 MPa for the CMC containing Sylramic™ fibers and 140 MPa for the CMC reinforced with Sylramic-iBN fibers. At higher fatigue stresses, the presence of steam caused noticeable degradation in fatigue performance of both composites. The retained strength and modulus of all run-out specimens were characterized. The materials tested in air retained 100% of their tensile strength, while the materials tested in steam retained only about 90% of their tensile strength.
DOI
10.1007/s10443-010-9163-x
Source Publication
Applied Composite Materials
Recommended Citation
Ruggles-Wrenn, M.B., Sharma, V. Effects of Steam Environment on Fatigue Behavior of Two SiC/[SiC+Si3N4] Ceramic Composites at 1300°C. Appl Compos Mater 18, 385–396 (2011). https://doi.org/10.1007/s10443-010-9163-x
Comments
The "Link to Full Text" on this page loads the PDF of the article, open-access through the Springer Nature SharedIt content-sharing initiative. Please attribute the work using the citation indicated below.