Irradiation stability and thermomechanical properties of 3D-printed SiC

JOURNAL OF NUCLEAR MATERIALS

卷:551

Article

Terrani, K. A.¹  Lach, T.¹  Wang, H.¹  Le Coq, A.¹  Linton, K.¹  Petrie, C.¹  Koyanagi, T.¹  Byun, T. S.¹ 

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

关键词: Kurt Terrani;    ORNL;    Oak Ridge;    TN United States;   

DOI  :  10.1016/j.jnucmat.2021.152980

来源: Elsevier

【 摘 要 】

Neutron irradiation tests were carried out on 3D-printed SiC derived from binderjet additive manufac-turing and chemical vapor infiltration. Irradiation was carried to 2.3 dpa over a temperature range of 400-850 degrees C. Anisotropy that had been observed in the thermal conductivity of 3D-printed SiC prior to irradiation vanished after irradiation as the irradiation defect thermal resistivity accumulated in the ma-terial. No degradation in strength was observed in the material before or after irradiation, at various temperatures, or in different orientations. Electron microscopy of the microstructure after neutron irradi-ation showed distinct defect morphologies in the heterogenous material, but no evidence for irradiation-induced cracking or degradation in the microstructure was observed. (c) 2021 Elsevier B.V. All rights reserved.

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