Effect of He content on the evolution of He bubbles and He thermal desorption behaviors in FeCr based nanocrystalline film
Source abstract
Abstract
Abstract He-charged FeCr based nanocrystalline films were fabricated at room temperature in a mixed atmosphere of He and Ar by radio frequency magnetron sputtering. The effect of the He/Ar ratio on the crystalline structure, surface morphology, He desorption behaviors, and the size and distribution of He bubbles had been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermal desorption spectrum (TDS), and transmission electron microscopy (TEM), respectively. The results of XRD revealed that He-charged FeCr based films had a typical bcc structure. Surface SEM images showed that the grain size of FeCr based films decreased with the He/Ar ratio increasing. The results of TDS profiles exhibited that these desorption peaks corresponded to the release of He atoms dissociated from surface, HenV (2≤n≤6), HenVm (1≤n, 2≤m), and He bubbles, respectively. Based on the results of TEM observation, the density of He bubbles was proportional to the He/Ar ratio, while the size of He bubbles could be scarcely influenced by the He/Ar ratio.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · Advanced materials and composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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