Ultrafast-laser powder bed fusion of oxygen-deficient Nb2O5 ceramics with highly improved electrical properties
نویسندگان
چکیده
• Optimized ultrafast-laser powder bed processing produces uniform and compact sintered layers of niobium oxide. Microstructure anisotropy the can be controlled with laser conditions. Laser enables stabilizing a monoclinic oxygen-deficient phase. oxygen-deficiency determine electrical properties material. The material resistivity decreases by more than eight orders magnitude upon treatment. In this work, Nb 2 O 5 highly improved respect to pristine have been produced fusion process. conditions required for producing from studied optimized . It has established that irradiation, performed in air at room temperature, leads formation dense high temperature crystal structure (H-Nb ) but oxygen deficient. show preferential orientation short axis lying plane. This irradiation Anisotropic observed as consequence induced microstructure, while overall is decreased due deficiency. These results indicate it feasible use ultrafast promote high-temperature non-stoichiometric oxide phases few seconds low energy consumption. irradiated are extremely interesting different electronic sensing applications.
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ژورنال
عنوان ژورنال: Materials & Design
سال: 2022
ISSN: ['1873-4197', '0264-1275']
DOI: https://doi.org/10.1016/j.matdes.2022.111346