Abstract
This manuscript provides raw nitrogen gas adsorption data, images and videos obtained from a technique that combines Focused Ion Beam (FIB) and Scanning Electron Microscopy (SEM) known as FIB-SEM tomography and Transmission Electron Microscopy (TEM) micrographs. This collection of data is useful for characterization of the effects of high fluence neutron irradiation in nuclear graphite as described in the associated manuscript, “Mesopores development in superfine grain graphite neutron-irradiated at high fluence” (Contescu et al., 2019). Nitrogen adsorption isotherms at 77 K are provided for graphite samples before and after neutron irradiation at 300, 450, and 750 °C at fluences before and after turnaround. FIB-SEM tomography reveals porosity of unirradiated and irradiated samples. Using this technique, four data sets were obtained, of which the first three are presented in video format, whereas the fourth one is a series of images provided in raw format unique to this manuscript. All microscopy data document the microstructure, surface area and porosity of superfine grain graphite G347A (Tokai Carbon, Japan) before irradiation and irradiated after turnaround at 400 °C. TEM micrographs provide unique information on irradiation damage at high neutron fluence (>27. 8 displacements per atom, dpa) in the microstructure and crystal lattice of graphite. Additional TEM micrographs are provided here, which do not duplicate the research paper published elsewhere (Contescu et al., 2019). These data sets are unique, as samples at high irradiation doses have never been measured or imaged before with the aforementioned techniques.
| Original language | English |
|---|---|
| Pages (from-to) | 2643-2650 |
| Number of pages | 8 |
| Journal | Data in Brief |
| Volume | 21 |
| DOIs | |
| State | Published - Dec 2018 |
Funding
This work was funded by a Nuclear Science User Facilities (NSUF) award and used materials and equipment located at Low Activation Materials Design and Analysis Laboratory (LAMDA), a NSUF infrastructure facility, and of Materials Science and Technology Division, both located at Oak Ridge National Laboratory (ORNL). The authors acknowledge Mr. Kory Linton, the manager of LAMDA facility. NSUF is the U. S. Department of Energy, Nuclear Energy Office׳s only designated nuclear energy user facility. The irradiation of G347A was performed at the Oak Ridge National Laboratory (ORNL) and sponsored by Tokai Carbon Co., Ltd. under the Material Science and Technology Division, Work-for-Others (WFO) Program, IAN: 16B630901 , and DOE agreement: NFE-09-02345 , with the U.S. Department of Energy . A portion of this research at ORNL׳s High Flux Isotope Reactor was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. The authors acknowledge Tokai Carbon Co., Ltd. (Japan) for provided graphite grade G347A, which was further irradiated in the High Flux Isotope Reactor (HFIR) at ORNL. Oak Ridge National Laboratory is managed by UT-Battelle under contract DE-AC05-00OR22725.
| Funders | Funder number |
|---|---|
| Office of Basic Energy Sciences | |
| Scientific User Facilities Division | |
| UT-Battelle | DE-AC05-00OR22725 |
| U.S. Department of Energy | NFE-09-02345 |
| Oak Ridge National Laboratory | |
| EA Pharma Co., Ltd. | 16B630901 |