Abstract
Molecular dynamic (MD) simulations were used to investigate the aggregation process of Ti3Al nanoparticles (NPs) of varying sizes. The aggregation behavior of Ti3Al NPs can be divided into four stages: stable contact, slow aggregation, fast aggregation, and uniform diffusion. A liquid bridge was formed in aggregation stage between two NPs and disappears in diffusion stage. The different shrinkage ratio reveals that rapid aggregation, melting, and completion of aggregation do not occur simultaneously. Moreover, the sintering neck is less stable for Ti3Al NPs with a radius of 50 Å due to plastic deformation, resulting in a slow aggregation phase.
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Acknowledgments
Project supported by the Guizhou Province Science and Technology Fund, China (Grant Nos. ZK [2021] 051, ZK[2023] 013), the National Natural Science Foundation of China (Grant Nos. 52262021, and 51761004), and Industry and Education Combination Innovation Platform of Intelligent Manufacturing and Graduate Joint Training Base at Guizhou University (Grant No. 2020-520000-83-01-324061).
Funding
National Natural Science Foundation of China, 52262021, Tinghong Gao,51761004, Tinghong Gao, Industry and Education Combination Innovation Platform of Intelligent Manufacturing and Graduate Joint Training Base at Guizhou University, 2020-520000-83-01-324061, Tinghong Gao, Guizhou Province Science and Technology Fund, China, ZK[2021] 051, Tinghong Gao, [2017] 5788, Tinghong Gao
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Gao, T., Liu, L., Li, L. et al. Aggregation behavior and structural properties of Ti3Al nanoparticles. MRS Communications 13, 1388–1394 (2023). https://doi.org/10.1557/s43579-023-00472-w
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DOI: https://doi.org/10.1557/s43579-023-00472-w