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The growth ofβphase in Mg-Gd-Y-Ni alloy by experimental and first-principles study
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作者 Yiqiang Hao Lei Zhou +2 位作者 Zhiqing Chen Zhixian Zhao Bin Chen 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第2期506-515,共10页
The paper reports on the atomic investigation aboutβphase in Mg_(96)Gd_(2)Y_(1)Ni_(1) alloy by using the first-principles study and the high-angle annular dark-field scanning transmission electron microscope(HAADF-ST... The paper reports on the atomic investigation aboutβphase in Mg_(96)Gd_(2)Y_(1)Ni_(1) alloy by using the first-principles study and the high-angle annular dark-field scanning transmission electron microscope(HAADF-STEM)corrected by atomic Cs.By using HAADF-STEM,the rectangularβphases were observed in the underage and peak aging stages in Mg_(96)Gd_(2)Y_(1)Ni_(1) alloy.Theβphase could be precipitated from the previously precipitatedβphase,and theβphase grew in steps when it was precipitated.A special transition structure of three atomic layer thicknesses was first observed at the edge of theβphase and the structure of this interface is probably as theβ/Mg_(1) interface for the analysis of thermodynamic characterization and electronic characterization.Theβ'phase and theβ_(H) structure were precipitated only at the edge of the length directions of theβphase.Theβ'phase continues to grow into aβphase directly without the formation ofβ_(1) phase,resulting in an increase in the length of theβphase,which is discovered for the first time. 展开更多
关键词 HAADF-STEM First-principles study mg-gd-y-ni alloy βphase GROWTH INTERFACE
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汽车电池负极镁基合金Mg-Ni-Y-Gd的组织与性能 被引量:2
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作者 吴敏 黎聪 《电镀与精饰》 CAS 北大核心 2020年第2期11-14,共4页
针对目前汽车电池存在续航不足、放电不稳定等问题,采用不同的球磨工艺制备了MgNi-Y-Gd和Mg2Ni汽车电池负极镁基合金,并对其组织、放电性能和耐腐蚀性能进行了测试与分析。结果表明:在500 r/min下球磨48 h后两种合金都是非晶合金。与Mg... 针对目前汽车电池存在续航不足、放电不稳定等问题,采用不同的球磨工艺制备了MgNi-Y-Gd和Mg2Ni汽车电池负极镁基合金,并对其组织、放电性能和耐腐蚀性能进行了测试与分析。结果表明:在500 r/min下球磨48 h后两种合金都是非晶合金。与Mg2Ni相比,Mg-Ni-YGd合金腐蚀电位正移53 mV,充放电循环25次后放电容量减小13.5%,合金的耐腐蚀性能和放电性能得到明显提高。 展开更多
关键词 汽车电池负极材料 球磨 镁基合金Mg-Ni-Y-Gd 放电性能 耐腐蚀性能
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