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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Influence of hydrogen dopant on the structure and crystallization of the partially crystalline Zr_(76)Ni_(24) metallic glass
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Influence of hydrogen dopant on the structure and crystallization of the partially crystalline Zr_(76)Ni_(24) metallic glass

机译：氢掺杂对部分结晶的Zr_（76）Ni_（24）金属玻璃的结构和结晶的影响

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摘要

The influence of hydrogen dopant on the structure and crystallization of partially crystalline Zr_(76)Ni_(24) metallic glass during heat treatment at different heating rates has been investigated by means of differential scanning calorimetry (DSC) in the temperature interval from 300 to 823 K and by X-ray powder diffraction (XRD) at room temperature. According to the XRD results, the as quenched Zr_(76)Ni_(24) samples were mostly glassy (about 90 percent) with about 10 percent orthorhombic metastable Zr_3Ni crystalline phase. A systematic DSC analysis shows that adding hydrogen to these Zr_(76)Ni_(24) samples raises the temperature of crystallization, T_(x1) for the hydrogen content up to x = 0.054 (x indicate at. percent). Also, the hydrogen absorption causes an increase of the lattice parameter a and a decrease of the lattice parameter b of the orthorhombic metastable Zr_3Ni crystalline phase. The as quenched Zr_(76)Ni_(24) samples showed to be oxidation resistant, whereas the oxidation rate of the hydrogen doped sample increases with increasing hydrogen content during heat treatment up to 823 K. The scales formed on the surface of the annealed hydrogen doped samples during the oxidation have a nanocrystalline microstructure consisting mainly of monoclinic ZrO_2.
机译：利用差示扫描量热法（DSC）研究了在300-823℃温度范围内氢掺杂对部分晶态Zr_（76）Ni_（24）金属玻璃结构和晶化的影响。并在室温下通过X射线粉末衍射（XRD）。根据XRD结果，淬火后的Zr_（76）Ni_（24）样品大多为玻璃态（约90％），且正交晶的亚稳Zr_3Ni晶相约为10％。系统的DSC分析表明，向这些Zr_（76）Ni_（24）样品中添加氢会提高结晶温度T_（x1），氢含量最高x = 0.054（x表示原子百分数）。另外，氢的吸收导致正交晶的亚稳Zr_3Ni晶相的晶格参数a增加而晶格参数b减少。淬火后的Zr_（76）Ni_（24）样品显示出抗氧化性，而掺杂氢的样品的氧化速率随着热处理过程中直至823 K的氢含量的增加而增加。在退火氢的表面形成水垢氧化过程中掺杂的样品具有主要由单斜晶ZrO_2组成的纳米晶体微观结构。

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