Characterization of as-deposited cold sprayed Cr-coating on Optimized ZIRLO™ claddings
نویسندگان
چکیده
As-produced Cr-coated Optimized ZIRLO™ cladding material fabricated with the cold-spray (CS) deposition process is studied. Cross-sectional electron microscopy, nano-hardness profiling, transmission Kikuchi diffraction, and atom probe tomography (APT) were performed to investigate nature of CS Cr-coating/Optimized interface, microstructure coating, effects on Zr-substrate microstructure. The former surface was found have a highly deformed nano-crystalline microstructure, formation which attributed dynamic recrystallization occurring during coating deposition. This microstructural change, evaluated backscattered diffraction appeared be confined depth few microns. Through APT analysis, 10–20 nm thick intermixed bonding region observed at interface between substrate. chemical composition this suggests that layer originated from localized shearing heating thin volume outermost study region's crystalline structure high resolution microscopy revealed distorted hexagonal close-packed structure.
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ژورنال
عنوان ژورنال: Journal of Nuclear Materials
سال: 2021
ISSN: ['1873-4820', '0022-3115']
DOI: https://doi.org/10.1016/j.jnucmat.2021.152892