Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance
Synergistically enhancing the erosion and impact resistance of contacts poses a significant challenge for cutting-edge electrical equipment. Fortunately, mollusk shells in nature have evolved effective strategies to construct microstructures with superior erosion and impact resistance. Inspired by t...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847824001539 |
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| author | Changhu Xu Kai Wen Zhe Wang Jun Wang Hailin Lu Zesen Mao Tianci Mao Chongqing Fan Jun Li |
| author_facet | Changhu Xu Kai Wen Zhe Wang Jun Wang Hailin Lu Zesen Mao Tianci Mao Chongqing Fan Jun Li |
| author_sort | Changhu Xu |
| collection | DOAJ |
| description | Synergistically enhancing the erosion and impact resistance of contacts poses a significant challenge for cutting-edge electrical equipment. Fortunately, mollusk shells in nature have evolved effective strategies to construct microstructures with superior erosion and impact resistance. Inspired by the structure of nacre, AgSnO2 contact material with hierarchical architectures has been designed and fabricated. The mechanistic link between microstructural evolution and dynamic erosion is studied through experiments combined with Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) simulations. Results show that the reconstructed SnO2 skeleton endowed with a highly continuous and anisotropic ‘flowering'-like structure forms a continuous interpenetrating network with Ag, optimizing the conductive pathways on the molten pool surface. Additionally, the Ag-rich regions in the deeper layers on both sides of the molten pool offers a stable ‘nutrient-supply’ for the continuous ‘flowering’ reconstruction of the skeleton, exhibiting excellent in-situ self-repairing erosion resistance. Benefiting from this synergistic strategy, this skeleton is reconstructed based on its natural structure, which further disperses the stress and deformation concentration while inhibiting interfacial debonding, thereby reducing the formation of cracks and significantly enhancing the impact resistance. This work is expected to breakthrough erosion and impact resistance in extreme condition electrical contact materials through biomimetic microstructure design. |
| format | Article |
| id | doaj-art-9b76923d23bc40d9862f37f9a4f38db5 |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-9b76923d23bc40d9862f37f9a4f38db52025-01-04T04:56:38ZengElsevierJournal of Materiomics2352-84782025-01-01111100914Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistanceChanghu Xu0Kai Wen1Zhe Wang2Jun Wang3Hailin Lu4Zesen Mao5Tianci Mao6Chongqing Fan7Jun Li8School of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaSchool of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaSchool of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, China; School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China; Changde Institute of Collaborative Innovation, Changde, 415106, China; Corresponding author. School of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, China.School of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaGroup of Mechanical and Biomedical Engineering, College of Mechanical & Electronic Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaSchool of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaSchool of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaSchool of Materials Science and Engineering, Xi'an Polytechnic University, Xi'an, 710048, ChinaChangde Institute of Collaborative Innovation, Changde, 415106, ChinaSynergistically enhancing the erosion and impact resistance of contacts poses a significant challenge for cutting-edge electrical equipment. Fortunately, mollusk shells in nature have evolved effective strategies to construct microstructures with superior erosion and impact resistance. Inspired by the structure of nacre, AgSnO2 contact material with hierarchical architectures has been designed and fabricated. The mechanistic link between microstructural evolution and dynamic erosion is studied through experiments combined with Computational Fluid Dynamics (CFD) and Finite Element Method (FEM) simulations. Results show that the reconstructed SnO2 skeleton endowed with a highly continuous and anisotropic ‘flowering'-like structure forms a continuous interpenetrating network with Ag, optimizing the conductive pathways on the molten pool surface. Additionally, the Ag-rich regions in the deeper layers on both sides of the molten pool offers a stable ‘nutrient-supply’ for the continuous ‘flowering’ reconstruction of the skeleton, exhibiting excellent in-situ self-repairing erosion resistance. Benefiting from this synergistic strategy, this skeleton is reconstructed based on its natural structure, which further disperses the stress and deformation concentration while inhibiting interfacial debonding, thereby reducing the formation of cracks and significantly enhancing the impact resistance. This work is expected to breakthrough erosion and impact resistance in extreme condition electrical contact materials through biomimetic microstructure design.http://www.sciencedirect.com/science/article/pii/S2352847824001539Ag-SnO2 contact materialsErosion resistanceImpact resistanceMolten bridge evolutionSkeleton reconstruction |
| spellingShingle | Changhu Xu Kai Wen Zhe Wang Jun Wang Hailin Lu Zesen Mao Tianci Mao Chongqing Fan Jun Li Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance Journal of Materiomics Ag-SnO2 contact materials Erosion resistance Impact resistance Molten bridge evolution Skeleton reconstruction |
| title | Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance |
| title_full | Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance |
| title_fullStr | Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance |
| title_full_unstemmed | Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance |
| title_short | Nacre-mimetic alternating architecture of AgSnO2 contact: Highly-efficient synergistic enhancement of in-situ self-repairing erosion resistance and naturally evolving impact resistance |
| title_sort | nacre mimetic alternating architecture of agsno2 contact highly efficient synergistic enhancement of in situ self repairing erosion resistance and naturally evolving impact resistance |
| topic | Ag-SnO2 contact materials Erosion resistance Impact resistance Molten bridge evolution Skeleton reconstruction |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824001539 |
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