Stress-corrosion behavior of SiCf/SiC under CMAS-wet-oxygen environments
Source abstract
Abstract
SiC f /SiC used in aeroengine hot sections suffer serious recession under complicated environments. Here, synergistic effects of CMAS and steam on the degradation of pre-cracked SiC f /SiC are investigated. Based on microstructure characterization, it can be found that BN-SiC interphase/fiber separation mode at 1100 ℃ is changed into BN-SiC interphase/matrix separation at 1300 ℃ in cracks. AE technique is used to analyze the damage evolution of SiC f /SiC. CMAS with high fluidity induces severe oxidation of the composite. Therefore, AE activity weakens and the damage in SiC f/SiC decreases at 1300 ℃. This work provides reference for microstructure design of SiC f /SiC in corrosive environments.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Semiconductor materials and devices · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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