To research the structure radiation stability of simulated Gd2Zr2O7-pyrochlore glass-ceramic wasteforms Nd3+, Ce4+ were selected as the simulated nuclide of An3+ and An4+ radionuclides respectively. A series of compou...To research the structure radiation stability of simulated Gd2Zr2O7-pyrochlore glass-ceramic wasteforms Nd3+, Ce4+ were selected as the simulated nuclide of An3+ and An4+ radionuclides respectively. A series of compounds with the general formula Gd2-xNdxZr2-xCexO7 (0.0≤ x ≤2.0) were prepared by High-temperature sintering method at 1623 K for 48 h in air atmosphere. The heavy-ion irradiation experiments were done at room temperature and atmospheric pressure. The structure and microscopic morphology of Gd2-xNdxZr2-xCexO7 (0.0≤ x ≤2.0) glass-ceramic wasteforms before and after irradiation experiments were investigated by the X-ray diffraction and scanning electron microscopy.展开更多
Although Ni-W substrate with high W content (>5at.%) substrates have been developed successfully, the quality of cube texture and grain boundary, as well as extensive applications in coated conductors should be fur...Although Ni-W substrate with high W content (>5at.%) substrates have been developed successfully, the quality of cube texture and grain boundary, as well as extensive applications in coated conductors should be further improved. In the present work, once intermediate annealing treatment (IAT) at 500°C for 2 h has been employed to optimize the deformation and recrystallization textures in Ni-7at.%W (Ni7W) substrates. As a result, competitive high cube texture content (<10°) and low angle grain boundary fraction (<10°) were realized (98.5% and 91.2%, respectively). A Gd<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> (GZO) buffer layer with strong cube texture and high-quality surface deposited successfully on the Ni7W substrate using the chemical solution deposition method, demonstrating the advanced GZO/Ni7W template is promising for coated conductors.展开更多
文摘To research the structure radiation stability of simulated Gd2Zr2O7-pyrochlore glass-ceramic wasteforms Nd3+, Ce4+ were selected as the simulated nuclide of An3+ and An4+ radionuclides respectively. A series of compounds with the general formula Gd2-xNdxZr2-xCexO7 (0.0≤ x ≤2.0) were prepared by High-temperature sintering method at 1623 K for 48 h in air atmosphere. The heavy-ion irradiation experiments were done at room temperature and atmospheric pressure. The structure and microscopic morphology of Gd2-xNdxZr2-xCexO7 (0.0≤ x ≤2.0) glass-ceramic wasteforms before and after irradiation experiments were investigated by the X-ray diffraction and scanning electron microscopy.
文摘Although Ni-W substrate with high W content (>5at.%) substrates have been developed successfully, the quality of cube texture and grain boundary, as well as extensive applications in coated conductors should be further improved. In the present work, once intermediate annealing treatment (IAT) at 500°C for 2 h has been employed to optimize the deformation and recrystallization textures in Ni-7at.%W (Ni7W) substrates. As a result, competitive high cube texture content (<10°) and low angle grain boundary fraction (<10°) were realized (98.5% and 91.2%, respectively). A Gd<sub>2</sub>Zr<sub>2</sub>O<sub>7</sub> (GZO) buffer layer with strong cube texture and high-quality surface deposited successfully on the Ni7W substrate using the chemical solution deposition method, demonstrating the advanced GZO/Ni7W template is promising for coated conductors.
