首页|Evaluating surface damage behavior of W-(Y0.9La0.1)2O3 composites during spark plasma sintering process improvement
Evaluating surface damage behavior of W-(Y0.9La0.1)2O3 composites during spark plasma sintering process improvement
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
In this study, W-(Y0.9La0.1)2O3 composite powders are fabricated by means of a combination of wet chemical method and spark plasma sintering. We systematically study the sintering and densification behavior of W-(Y0.9La0.1)2O3 composite powders at different temperatures and pressures. The results indicate that ultrafine tungsten-based composites with a dispersed distribution of (Y0.9La0.1)2O3 particles can be achieved under optimized temperature and pressure conditions. The optimized pressure and sintering temperature for W-(Y0.9 La0.1)2O3 composites are identified to be 75 MPa and 1600 °C, respectively. In addition, the surface damage behavior of W-(Y0.9La0.1)2O3 composites induced by the laser thermal shock and helium ion irradiation are also investigated. It is shown that the presence of holes greatly enlarges the helium retention during helium ion irradiation and promotes the melting caused by local overheating during laser thermal shock. We find that the fine-dispersed distribution of (Y0.9La0.1)2O3 particles in the tungsten-based composites can effectively improve the resistance of helium ion irradiation and laser thermal shock. We hope that these findings could provide some guidance and reference for the fabrication of large-sized tungsten-based materials in fusion engineering.
School of Materials Science and Engineering Hefei University of Technology
Anhui Province Key Lab of Aerospace Structural Parts Forming Technology and Equipment Institute of Industry and Equipment Technology Hefei University of Technology
Institute for Integrated Radiation and Nuclear Science Kyoto University
NSTL
Elsevier
