Work

Multilayered Oxide Interphase Concept for Ceramic‐Matrix Composites

Year: 1998

Type: article

Abstract: Hi‐Nicalon/SiC minicomposite specimens containing three oxide interphase layers (amorphous SiO 2 , monoclinic ZrO 2 , and amorphous SiO 2 ) were prepared by chemical vapor deposition. The minicomposites exhibited graceful composite failure behavior with reasonable load‐carrying capability in room‐temperature tensile tests. Much of the composite behavior and load‐carrying capability was retained even after matrix precracking and subsequent oxidation in air at 960°C for 10 h. In both the as‐prepared and oxidized specimens, crack deflection and fiber pull‐out occurred preferentially within the multilayered interphase region. The potential merits and uncertainties associated with this multilayered oxide interphase approach were discussed in the context of designing environmentally durable interfaces for ceramic‐matrix composites.

Source: Journal of the American Ceramic Society

DOI: 10.1111/j.1151-2916.1998.tb02396.x

Authors: Woo Y. Lee, Edgar Lara‐Curzio, Karren L. More

Institutions: Stevens Institute of Technology, Oak Ridge National Laboratory, American Ceramic Society

Language: English

Topic: Advanced ceramic materials synthesis

Subfield: Ceramics and Composites

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: U.S. Department of Energy, Oak Ridge National Laboratory

Awards: G2988778103, G4932177352