The recent progress and future prospects for ultra-centrifugal sedimentation in solids are described,mainly involving equipment,miscible systems and compounds.Almost 90%ultracentrifugation experiments were performed o...The recent progress and future prospects for ultra-centrifugal sedimentation in solids are described,mainly involving equipment,miscible systems and compounds.Almost 90%ultracentrifugation experiments were performed on the 1st and 2nd high-temperature ultracentrifuge which is typically operated at temperatures below 500℃ under the maximum centrifugal acceleration up to 106 g.The strong gravitational and temperature fields induce atomic-scale graded structure,grain growth and refinement,and voids accumulation caused by the atomic sedimentation in miscible systems.New structures,properties and substances are produced in some compounds.A new cantilever high-temperature ultracentrifuge with a test temperature up to 1200℃ is under construction at Zhejiang University,making it possible to simulate the composition,microstructure and property evolution of superalloys in the operating environment of aircraft engines.展开更多
基金National Natural Science Foundation of China(51988101)Fundamental Research Funds for the Central Universities(226-2022-00050)。
文摘The recent progress and future prospects for ultra-centrifugal sedimentation in solids are described,mainly involving equipment,miscible systems and compounds.Almost 90%ultracentrifugation experiments were performed on the 1st and 2nd high-temperature ultracentrifuge which is typically operated at temperatures below 500℃ under the maximum centrifugal acceleration up to 106 g.The strong gravitational and temperature fields induce atomic-scale graded structure,grain growth and refinement,and voids accumulation caused by the atomic sedimentation in miscible systems.New structures,properties and substances are produced in some compounds.A new cantilever high-temperature ultracentrifuge with a test temperature up to 1200℃ is under construction at Zhejiang University,making it possible to simulate the composition,microstructure and property evolution of superalloys in the operating environment of aircraft engines.
