The electrical and processing properties of AgSnO<sub>2</sub> composite contact materials were improved by doping. Based on the first principles of density functional theory, the elastic constants of SnO<sub>2</sub> supercells doped with Cr-Y and Cr-Ce were calculated by simulation, and the rare earth element Y with better mechanical properties was selected for simulation and experiment of electrical properties. The effects of Cr and Y doping on the electrical properties of SnO<sub>2</sub> were analyzed from the energy band structure and density of states. The results show that the band gap of SnO<sub>2</sub> decreases and the energy required for electron transition cuts down after doping. The doped SnO<sub>2</sub> powder was prepared by sol-gel method, and its phase structure was analyzed by XRD. It is verified that doping ions enter into the SnO<sub>2</sub> lattice to form solid solution, and achieves the alternative doping model established by simulation. The doped AgSnO<sub>2</sub> composite contact materials were prepared by powder metallurgy method, and their densities, hardnesses and conductivities were measured. The conductivities of doped AgSnO<sub>2</sub> contact materials are improved, and Cr-Y co-doped is the best among them, which verifies the simulation results. JF04D type electrical contact material test system was used to test the electrical contact performance of contact materials. The test results show that doping Cr and Y can effectively reduce the arc energy of AgSnO<sub>2</sub> contact materials, improve the arc erosion resistance, inhibit the arc ablation of contact materials, and stabilize the arc erosion resistance and welding resistance of contact materials.
Crystals, Free Full-Text
Enhanced visible photocatalytic activity of nitrogen doped single-crystal-like TiO2 by synergistic treatment with urea and mixed nitrates, Journal of Materials Research
American Scientific Publishers
2 × 2 × 2 Supercell model of doped rutile-SnO2
Ga-Doped AgInS2 Modified with Co–Pi Co–catalyst for Efficient Photoelectrochemical Water Splitting
Structural, optical, and antibacterial properties of pure and doped (Ni, Co, and Fe) Cr2O3 nanoparticles: a comparative study
Coatings, Free Full-Text
Materials, Free Full-Text
Exploring the Effect of Fe/Cr Doping on Structural and Optical Characteristics of Nano ZnMn2O4
Crystals, Free Full-Text
Gemini surfactant assisted synthesis of mesoporous Mn/Mg bimetal doped TiO2 nanomaterial: characterization and photocatalytic activity studies under visible light irradiation, Sustainable Environment Research
Simulation and experiment on properties of Cr-Y co-doped AgSnO2 contact materials
First-principles and experimental investigations on physical properties and arc erosion behavior of metal-doped AgSnO2 electrical contact materials - ScienceDirect