NSUF 24-5092: Advanced microstructure characterization of irradiation impact on corrosion performance of SiC-SiC composite materials

The PI has access to 6 irradiated samples obtained from SiC-SiC composites irradiated (1.0-1.5 dpa) inside the MITR reactor in PWR conditions. Across the 6 samples, 2 different chemical vapor deposition (CVD) SiC microstructures were irradiated. Two samples from the cladding wall and a cross section of an endcap joint will be extracted from a representative specimen for each microstructure. These samples will then be packaged and shipped to Pacific Northwest National Laboratory (PNNL) and Center for Advanced Energy Studies (CAES) for advanced microscopy investigations. The proposed work will complement the ongoing PIE of the samples including mechanical testing, thermal-physical properties, and other microstructural investigations such as XRD and XCT being conducted at, and being funded by, GA-EMS. Characterization at GA-EMS will capture the macro-scale property changes in the SiC-SiC composites after irradiation such as the hoop strength of material. GA-EMS has the pre-irradiation mechanical data to evaluate the change in properties after irradiation. The proposed advanced microscopic characterization of irradiated SiC-SiC composites utilizing techniques as EBSD, TEM and APT will enable a deeper understanding of the mechanisms driving the observed property changes.

추가 정보

필드	값
Award Announced Date	2024-08-15T09:41:25.827
Awarded Institution	General Atomics
Facility Tech Lead	Stuart Maloy, Yaqiao Wu
Irradiation Facility
PI	David Frazer
PI Email	[email protected]
Project Type	RTE
RTE Number	None