检索结果-南通市图书馆

Phase evolution,hydrogen storage thermodynamics,and kinetics of ternary Mg_(98)Ho_(1.5)Fe_(0.5) alloy

Journal of Rare Earths 2024年第9期42卷 1800-1808,I0006页

作者： Jinming Liu Hui Yong Yang Zhao Shuai Wang Yiwan Chen Baosheng Liu Jifan Hu Yanghuan Zhang College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan030024China China Institute of Ocean Engineering(Tsing Tao) Qingdao266000China Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou014010China

Rare earth elements and transition metals have been found to improve the hydrogen storage characteristics of magnesium-based *** study investigated the Mg-Ho-Fe(MHF) ternary alloy prepared using the vacuum induction melting technique.X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),pressure-composition-temperature(PCT),and differential scanning calorimetry(DSC) were used to analyze the alloy's phase transitions,microstructure,thermodynamics,and kinetic *** results reveal that the Mg_(98)Ho_(1.5)Fe_(0.5) alloy forms a solid solution with Ho and Fe in the magnesium *** hydrogen absorption,the activated alloy transforms into a mixture of Mg/MgH_(2) phases and nanoscale HoH_(2) ***,only the MgH_(2) phase decomposes during hydrogen desorption,while the HoH_(2) phase remains unchanged,exhibiting a positive catalytic *** alloy demonstrates excellent hydrogen absorption kinetics,achieving a capacity of 5.56 wt% H_(2) within 10 min at 360℃,owing to the combined catalytic effects of Ho and *** activation energy for hydrogen desorption is found to be 135.87 kJ/mol,which is lower than that of the activation energies of pure MgH_(2) and MgFe alloys,indicating an enhancement in desorption ***,the enthalpy and entropy changes for hydrogen absorption and desorption are determined to be-70.51 kJ/mol H_(2),-125.62 J/(K·mol) H_(2),72.83 kJ/mol H_(2),and 128.95 J/(K·mol) H_(2),***,it is worth noting that the thermodynamic properties of the alloy are improved due to the catalytic effect of Ho and Fe.

关键词： Rare earths Magnesium-based hydrogen storage hydrogen storage thermodynamics hydrogen storage kinetics

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Impact of severe plastic deformation on kinetics and thermodynamics of hydrogen storage in magnesium and its alloys

引用

Journal of Materials Science & Technology 2023年第15期146卷 221-239页

作者： Kaveh Edalati Etsuo Akiba Walter J.Botta Yuri Estrin Ricardo Floriano Daniel Fruchart Thierry Grosdidier Zenji Horita Jacques Huot Hai-Wen Li Huai-Jun Lin Ádám Révész Michael J.Zehetbauer WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER)Kyushu UniversityFukuokaJapan International Research Center for hydrogen Energy Kyushu UniversityFukuokaJapan Departamento de Engenharia de Materiais Universidade Federal de São CarlosSao Carlos-SPBrazil Department of Materials Science and Engineering Monash UniversityClaytonVIC 3800Australia Department of Mechanical Engineering the University of Western AustraliaCrawleyWA 6009Australia School of Applied Sciences University of Campinas(UNICAMP)LimeiraSão PauloBrazil Institut Néel CNRS&UGA38042 GrenobleFrance JOMI-LEMAN SA 74890 FessyFrance Universitéde Lorraine Laboratory of Excellence on Design of Alloy Metals for low-mass Structures(DAMAS)MetzF-57070France Universitéde Lorraine Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux(LEM3 UMR 7239)MetzF-57070France Graduate School of Engineering Kyushu Institute of TechnologyKitakyushuJapan Magnesium Research Center Kumamoto UniversityKumamotoJapan Synchrotron Light Application Center Saga UniversitySagaJapan hydrogen Research Institute Universitédu QuébecàTrois-Rivières3351 des ForgesTrois-RivièresQC G9A 5H7Canada Hefei General Machinery Research Institute Hefei 230031China Institute of Advanced Wear&Corrosion Resistance and Functional Materials Jinan UniversityGuangzhou 510632China Department of Materials Physics Eötvös UniversityBudapestH-1518P.O.B.32BudapestHungary Faculty of Physics University of ViennaBoltzmanngasse 5A-1090 WienAustria

Magnesium and its alloys are the most investigated materials for solid-state hydrogen storage in the form of metal hydrides,but there are still unresolved problems with the kinetics and thermodynamics of hydrogenation and dehydrogenation of this group of *** plastic deformation(SPD)methods,such as equal-channel angular pressing(ECAP),high-pressure torsion(HPT),intensive rolling,and fast forging,have been widely used to enhance the activation,air resistance,and hydrogenation/dehydrogenation kinetics of Mg-based hydrogen storage materials by introducing ultrafine/nanoscale grains and crystal lattice *** severely deformed materials,particularly in the presence of alloying additives or second-phase nanoparticles,can show not only fast hydrogen absorption/desorption kinetics but also good cycling *** was shown that some materials that are apparently inert to hydrogen can absorb hydrogen after SPD ***,the SPD methods were effectively used for hydrogen binding-energy engineering and synthesizing new magnesium alloys with low thermodynamic stability for reversible low/room-temperature hydrogen storage,such as nanoglasses,high-entropy alloys,and metastable phases including the high-pressureγ-MgH2 *** work reviews recent advances in the development of Mg-based hydrogen storage materials by SPD processing and discusses their potential in future applications.

关键词： Severe plastic deformation(SPD) Nanostructured materials Ultrafine-grained(UFG)materials Magnesium hydride(MgH_(2)) Magnesium-based alloys hydrogen absorption hydrogenation kinetics hydrogen storage thermodynamics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：