Jinzhao ZOU, Shizhuan XU, Peng WANG, Changqing CAO, Chao YAN, Zhiyong ZHU, Jun LIN, Yan YOU, Junqiang LU, Libing ZHU. Effects of spark plasma sintering parameters on mechanical and thermal properties of U3Si2 pellets[J]. NUCLEAR TECHNIQUES, 2024, 47(2): 020605
- NUCLEAR TECHNIQUES
- Vol. 47, Issue 2, 020605 (2024)
Fig. 1. Temperature dependence of the thermal diffusivity (a, b) and thermal conductivity (c, d) of U3Si2 pellets in the range 27~700 ℃
Fig. 2. SEM images of the indentations on the surfaces of the U3Si2 pellets (a) SPS-4 with plastic deformation, (b) SPS-4 with brittle fracture, (c) SPS-1 with brittle fracture, (d) testing area of SPS-5
Fig. 3. Hardness of U3Si2 pellets versus the indentation depth (a) 4 pellets prepared under different dwell temperatures at 60 MPa, (b) 2 pellets prepared under different pressures at 1 100 ℃, (c⁓h) H2-1/h curves of 6 U3Si2 pellets corresponding to (a) and (b)
Fig. 4. Hardness and fracture toughness of U3Si2 pellets against dwell temperature (a) and pressure (b), Young's modulus of the pellets against dwell temperature (c) and pressure (d)
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Table 1. SPS parameters for U3Si2 pellets
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Table 2. Densities of SPS-fabricated U3Si2 pellets
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Table 3. (E/H)0.5 values of U3Si2 pellets and the average crack length under the HL mode of nanoindentation
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