Structural investigation and hydrogen capacity of Ymg2Ni9 and (Y0.5Ca0.5)(MgCa)Ni9: new phases in the AB2C9 system isostructural with LaMg2Ni9

K.Kadir; T.Sakai

首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Structural investigation and hydrogen capacity of Ymg2Ni9 and (Y0.5Ca0.5)(MgCa)Ni9: new phases in the AB2C9 system isostructural with LaMg2Ni9

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Structural investigation and hydrogen capacity of Ymg2Ni9 and (Y0.5Ca0.5)(MgCa)Ni9: new phases in the AB2C9 system isostructural with LaMg2Ni9

机译：Ymg2Ni9和（Y0.5Ca0.5）（MgCa）Ni9的结构研究和氢容量：与LaMg2Ni9等构的AB2C9系统的新相

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New ternary magnesium-based alloys, YMg2Ni9 and(Y0.5Ca0.5 )(MgCa)Ni9 have been synthesized and their crystalstructures were determined by Guinier-Hagg X-ray powderdiffraction. The compounds are a hexagonal and isostructural withLaMg2Ni9 (AB2C9 type), in which Y is uniquely at the A site as inYMg2Ni9, and Ca partially occupies both A and B sites. Thehydrogen absorption/desorption properties were determined bypressure-composition isotherms. YMg2Ni9 does not absorbhydrogen, whereas (Y0.5Ca0.5 )(MgCa)Ni9 absorbs ~2 wt. % H2 at~3.3 MPa and 263 K.

机译：合成了新型三元镁基合金YMg2Ni9和（Y0.5Ca0.5）（MgCa）Ni9，并通过Guinier-Hagg X射线粉末衍射法测定了它们的晶体结构。该化合物与LaMg2Ni9（AB2C9型）呈六边形且同构，其中Y与YMg2Ni9中的Y一样独特地位于A位，而Ca部分占据了A和B位。氢的吸收/解吸性质由压力-组成等温线确定。 YMg2Ni9不吸收氢，而（Y0.5Ca0.5）（MgCa）Ni9吸收〜2 wt。在约3.3 MPa和263 K时的H2％。

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《Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics》 |1999年第2期|共7页
作者
K.Kadir; T.Sakai;
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正文语种 eng
中图分类合金学与各种性质合金;金属材料;
关键词
Hydrogen storage alloy; X-ray diffraction; Pressure-composition isotherms; Crystal structure; 贮氢合金; 镁合金; X射线衍射分析; 晶体结构; 相;

机译：Hydrogen storage alloy;X-ray diffraction;Pressure-composition isotherms;Crystal structure;贮氢合金;镁合金;X射线衍射分析;晶体结构;相;

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Structural investigation and hydrogen capacity of Ymg2Ni9 and (Y0.5Ca0.5)(MgCa)Ni9: new phases in the AB2C9 system isostructural with LaMg2Ni9

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