Molybdenum--niobium (1/1) | 68777-39-9

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: Molybdenum--niobium (1/1)
• 英文别名: molybdenum;niobium
• CAS: 68777-39-9
• 化学式: Mo₀Nb₀
• 分子量: 93.5131
• InChiKey: DTSBBUTWIOVIBV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  2
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为反应物：
  描述：

  氢气 、 Molybdenum--niobium (1/1) 以 neat (no solvent) 为溶剂， 生成
  参考文献：
  名称：

  Site Occupancy of Hydrogen in a Distorted bcc Lattice in Niobium Alloyed with Mo Atoms

  摘要：

  In order to study the atomistic state of hydrogen in a bcc lattice, the site occupancies of hydrogen dissolved in Nb-Mo alloys containing 39, 48, and 60 at.% Mo atoms have been investigated at room temperature by the channelling method utilizing a nuclear reaction of H-1(B-11,alpha)alpha alpha with a B-11(+) beam of about 2 MeV. In addition, the lattice parameters and half-widths of the X-ray reflection lines of the non-hydrogen-doped specimens have been measured at room temperature. Nb-Mo alloys form a solid solution over the entire Mo concentration range, maintaining a bcc crystal structure. From systematic studies including previous experiments on such alloys with lower Mo concentrations, it has been observed that the site occupancy of hydrogen changes very sensitively with Mo concentration. At low Mo concentrations, hydrogen is trapped by Mo atoms and occupies the trapped site (T-tr), which is displaced by about 0.6 angstrom from a tetrahedral (T) site attached to a Mo atom towards that Mo atom. At approximately 20 at.% Mo, most of the H atoms occupy T sites and some portion of the H atoms occupy octahedral (O) sites. With increasing Mo concentration, the O-site occupancy diminishes, and at Mo concentrations higher than about 39 at.% the occupancy of the displaced-T (d-T) site newly appears, which is displaced by about 0.25 angstrom from a T site towards its nearest-neighbour O site. It is recognized that there exists a close correlation between such a site change and a change in the half-width of the Xray reflection line with Mo concentration. On the basis of this correlation, it is concluded that the change in the site occupancy of hydrogen is due to a change in the lattice distortion induced by alloying with undersized Mo atoms, and that the d-T site is a stable site for hydrogen in slightly distorted bcc lattices.

  DOI：

  10.1143/jpsj.79.044602
• 作为产物：
  描述：

  铌 、 钼 以 melt 为溶剂， 1273.0 ℃ 、0.0 Pa 条件下， 反应 96.0h， 生成 Molybdenum--niobium (1/1)
  参考文献：
  名称：

  Mo合金化对Nb金属结构和透氢性能的影响

  摘要：

  摘要 通过 XRD 分析、PCT 测量和三点弯曲试验研究了 Nb 与 Mo 合金化对 Nb 金属结构和氢渗透性能的影响。结果表明，所制备的 Nb 100-x Mo x (x = 2, 7, 14) 合金样品均为具有 BCC 结构的 Nb 基固溶体，经过氢化反应生成具有 NbH 0.95 相的相应氢化物。与氢相互作用。BCC 结构和 NbH 0.95 相的晶格变形是由于 Nb 和 Mo 原子之间的尺寸差异造成的。Nb 86 Mo 14 样品具有较高的氢扩散系数值（1.84 × 10 -9 cm/s）、较高的氢化物形成焓（- 35.8 kJ/(mol·H 2 )），并且在/加氢处理后，

  DOI：

  10.1016/j.jallcom.2018.01.076

文献信息

• Structures and mechanical properties of Nb-Mo-Co(Ru) solid solutions for hydrogen permeation
  作者：Fei Liu、Zejun Xu、Zhongmin Wang、Mengyao Dong、Jianqiu Deng、Qingrong Yao、Huaiying Zhou、Yong Ma、Jiaoxia Zhang、Ning Wang、Zhanhu Guo

  DOI：10.1016/j.jallcom.2018.04.235

  日期：2018.8

  Abstract The structures and mechanical properties of Nb-Mo-Co(Ru) solid solutions for hydrogen permeation have been investigated by X-ray diffraction (XRD) analysis, pressure-composition-temperature (PCT) measurements, and three-point bending tests. The as-prepared Nb86Mo14, Nb86Mo7Co7, and Nb86Mo7Ru7 samples composed of Nb-based solid solutions with bcc structures were hydrogenated into their corresponding

  摘要 通过 X 射线衍射 (XRD) 分析、压力-成分-温度 (PCT) 测量和三点弯曲试验研究了用于氢渗透的 Nb-Mo-Co(Ru) 固溶体的结构和机械性能。将制备的 Nb86Mo14、Nb86Mo7Co7 和 Nb86Mo7Ru7 样品由具有 bcc 结构的 Nb 基固溶体组成，氢化成相应的氢化物，在加氢处理后得到 NbH0.95 相。在 Nb86Mo7Ru7 样品中观察到 bcc 结构和 NbH0.95 相的最大晶格变形。该样品具有最高的氢扩散系数值 (2.32 × 10−9 cm/s)，最低的氢化物形成焓 (-21.4 kJ/(mol·H2))，以及加氢前后的最大力。全面的，
• Rapid assessment of solid solution hardening via atomic size misfit parameter in refractory concentrated alloys
  作者：Il Hwan Kim、Hyun Seok Oh、Sang Jun Kim、Eun Soo Park

  DOI：10.1016/j.jallcom.2021.161320

  日期：2021.12

  binary refractory concentrated alloy (RCA) systems, by measuring the atomic size misfit and the modulus misfit parameters and applying them to the Labusch and Suzuki SSH-based models. Interestingly, we find a general trend that increasing the portion of the atomic size misfit parameter provides a better estimation of the measured SSH, which is a noticeable feature of the edge dislocation mediated SSH

  固溶硬化 (SSH) 是提高合金强度的最简单方法之一，因为只有溶质的浓度才重要。最近有人提出，一些浓体心立方 (BCC) 合金中的 SSH 可能由边缘位错主导，这与先前提出的稀 BCC 合金的 SSH 理论不同。在这项研究中，我们通过测量原子尺寸失配和模量失配参数并将它们应用于基于 Labusch 和 Suzuki 的 SSH 模型，研究了 14 种二元耐火浓缩合金 (RCA) 系统中的主要 SSH 机制。有趣的是，我们发现了一个总体趋势，即增加原子尺寸失配参数的部分可以更好地估计测量的 SSH，这是边缘位错介导的 SSH 的一个显着特征。
• Design of Nb–W–Mo alloy membrane for hydrogen separation and purification
  作者：K. Tsuchimoto、H. Yukawa、T. Nambu、Y. Matsumoto、Y. Murata

  DOI：10.1016/j.jallcom.2013.03.143

  日期：2013.12

  expected to resist against hydrogen embrittlement under at least 0.2 MPa of hydrogen pressure. Then, the hydrogen solubility and the permeability of the designed alloy have been investigated in a fundamental manner. It is shown that the dissolved hydrogen concentration in Nb–8 mol%W–8 mol%Mo alloy does not exceed the critical value of the ductile-to-brittle transition hydrogen concentration (DBTC, which

  摘要 定量研究了钨和钼的合金化对铌氢溶解度的影响。发现氢浓度为 0.2 (H/M) 时的平衡氢压力 PDBTC 随着铌中钨或钼含量的增加而线性增加。在这些结果的基础上，提出了 Nb-W-Mo 系统的 PDBTC-成分图。使用此图，设计了 Nb–8 mol%W–8 mol%Mo 合金，该合金有望在至少 0.2 MPa 的氢压下抵抗氢脆。然后，从根本上研究了设计合金的氢溶解度和渗透性。
• A neutron-spectroscopy study of the local vibrations, the interstitial sites and the solubility limit of hydrogen in niobium–molybdenum alloys
  作者：V.V. Sumin、H. Wipf、B. Coluzzi、A. Biscarini、R. Campanella、G. Mazzolai、F.M. Mazzolai

  DOI：10.1016/s0925-8388(00)01295-0

  日期：2001.3

  values of the vibrational energies show a complete hydrogen precipitation in the Nb 0.95 Mo 0.05 H 0.03 alloy and no hydrogen precipitation in the Nb 0.8 Mo 0.2 H 0.05 alloy. The fact that the hydrogen in the latter alloy was still in solid solution means that the molybdenum alloy components lead to an increase of the solubility limit of the hydrogen.

  摘要 我们通过中子能谱研究了在 10 到 300 K 的温度下，两种含 5 和 20 at.% 钼的铌基合金（Nb 0.95 Mo 0.05 H 0.03 和 Nb 0.8 Mo 0.2 H 0.05）中氢间隙的局部振动。 ）。在实验精度范围内，振动能与纯铌中氢的振动能一致。这表明两种合金中的氢占据四面体间隙位点。在 10 K 时，振动能值显示 Nb 0.95 Mo 0.05 H 0.03 合金中完全析氢，而 Nb 0.8 Mo 0.2 H 0.05 合金中没有析氢。后者合金中的氢仍处于固溶体中的事实意味着钼合金成分导致氢的溶解度极限增加。
• Mechanical properties of (HfCo)100−x(NbMo)x refractory high-entropy alloys with a dual-phase bcc-B2 structure
  作者：E. Panina、N. Yurchenko、A. Tojibaev、M. Mishunin、S. Zherebtsov、N. Stepanov

  DOI：10.1016/j.jallcom.2022.167013

  日期：2022.12