Under various electromagnetic induction heating powers,different Al3Ti/Al composites were fabricated by in-situ synthesis method from aluminum and titanium fibers.Microstructures and particles distribution of the comp...Under various electromagnetic induction heating powers,different Al3Ti/Al composites were fabricated by in-situ synthesis method from aluminum and titanium fibers.Microstructures and particles distribution of the composites were examined by XRD,SEM and EDS.The results show that no other intermetallic compounds beside Al3Ti can be in-situ synthesized.Around the titanium fibers,the reaction zones and diffusion zones can be obviously found.Due to the stirring of the electromagnetic function,the formation of the micro-cracks inside the reaction zone was conducive to the peeling off of the Al3Ti particles,and ensures the continuous reaction between liquid aluminum and titanium fibers,as well as the diffusion of Al3Ti particles.At the same time,there were secondary splits of Al3Ti particles located in diffusion zones.Two-body abrasion test shows that with the increase of induction heating power,the wear rates of the composites reduced and the number of grooves decreased.展开更多
采用铝液通氢的方法模拟木条裂解产物氢、H2O（汽）与铝液作用过程,利用化学分析、氢分析、扫描电子显微镜（SEM）以及分子动力学方法,研究了氢及通氢时带入的水与铝液反应过程,模拟计算氢在铝液中的扩散方式以及影响扩散的关键环节。...采用铝液通氢的方法模拟木条裂解产物氢、H2O（汽）与铝液作用过程,利用化学分析、氢分析、扫描电子显微镜（SEM）以及分子动力学方法,研究了氢及通氢时带入的水与铝液反应过程,模拟计算氢在铝液中的扩散方式以及影响扩散的关键环节。研究氢、氧化铝夹杂在铝样中的形貌与分布规律,从微观机制上揭示氢对电解铝液的传质规律。结果表明:熄效应使铝液氢含量增加,实验铝液氢含量达到1.266 m L/100 g,铝液中的Al3Ti、Al2O3共同吸附铝液中的氢形成AlTiOH团簇,寄生于氧化铝夹杂表面的氢随氧化铝夹杂悬浮于铝液中,是铝液中氢含量明显升高的原因。展开更多
基金Project(2015DFR50990-01)supported by International Cooperation Project of Ministry of Science and Technology of ChinaProjects(18JS060,18JS075)supported by the Shaanxi Key Laboratory of Nano-materials and Technology,China。
文摘Under various electromagnetic induction heating powers,different Al3Ti/Al composites were fabricated by in-situ synthesis method from aluminum and titanium fibers.Microstructures and particles distribution of the composites were examined by XRD,SEM and EDS.The results show that no other intermetallic compounds beside Al3Ti can be in-situ synthesized.Around the titanium fibers,the reaction zones and diffusion zones can be obviously found.Due to the stirring of the electromagnetic function,the formation of the micro-cracks inside the reaction zone was conducive to the peeling off of the Al3Ti particles,and ensures the continuous reaction between liquid aluminum and titanium fibers,as well as the diffusion of Al3Ti particles.At the same time,there were secondary splits of Al3Ti particles located in diffusion zones.Two-body abrasion test shows that with the increase of induction heating power,the wear rates of the composites reduced and the number of grooves decreased.
文摘采用铝液通氢的方法模拟木条裂解产物氢、H2O（汽）与铝液作用过程,利用化学分析、氢分析、扫描电子显微镜（SEM）以及分子动力学方法,研究了氢及通氢时带入的水与铝液反应过程,模拟计算氢在铝液中的扩散方式以及影响扩散的关键环节。研究氢、氧化铝夹杂在铝样中的形貌与分布规律,从微观机制上揭示氢对电解铝液的传质规律。结果表明:熄效应使铝液氢含量增加,实验铝液氢含量达到1.266 m L/100 g,铝液中的Al3Ti、Al2O3共同吸附铝液中的氢形成AlTiOH团簇,寄生于氧化铝夹杂表面的氢随氧化铝夹杂悬浮于铝液中,是铝液中氢含量明显升高的原因。
