Aluminium--hafnium (3/1) | 12004-64-7

• 分子结构分类: 无机化合物 - 混合金属/非金属化合物 - 各种混合金属/非金属
• 英文名称: Aluminium--hafnium (3/1)
• 英文别名: alumane;hafnium
• CAS: 12004-64-7
• 化学式: Al₃Hf
• 分子量: 259.435
• InChiKey: XDJKVPSOQRLUAY-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -3.55
• 重原子数：
  4
• 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：

  Aluminium--hafnium (3/1) 以 melt 为溶剂， 生成 氢化铝 、
  参考文献：
  名称：

  The hafnium aluminides HfAl3 and Hf2Al3 studied by perturbed angular correlations with 181Ta and 111Cd probes

  摘要：

  The electric quadrupole hyperfine interactions for Hf-181/Ta-181 and In-111/Cd-111 probes in the polycrystalline hafnium aluminides HfAl3 and Hf,AI, were measured in the temperature range 30-1100 K. On the basis of the similarities of the numbers, sizes and asymmetries of electric field gradients, lattice site allocations were made. In all matrices, Hf-181/Ta-181 was found to substitute into the Hf site. The In-111/Cd-111 impurities were also assigned to the Hf lattice site in the low-temperature phase of HfAl3, which has DO23 structure, but appear to substitute into the two non-equivalent Al sites in the Hf2Al3 phase, which has Fdd7 crystallographic structure. (C) 2000 Elsevier Science BN. All rights reserved.

  DOI：

  10.1016/s0925-8388(00)01124-5
• 作为产物：
  描述：

  铪 、 氢化铝 以 melt 为溶剂， 生成 Aluminium--hafnium (3/1)
  参考文献：
  名称：

  Stability and local electronic properties ofAl3M(M=Zr,Hf): An NMR study

  摘要：

  Al-27 NMR measurements were performed on the D0(23)-structure trialuminides Al3Zr and Al3Hf. The Knight shifts, quadrupole splittings. and spin-lattice relaxation times for each of the three crystallographic sites have been resolved. Universally small Fermi-contact Knight shifts and long relaxation times are found for both alloys. Results provide a measure of s-character Fermi-level density of states N-s(E-F) and all indication of orbital weights. In addition, there is evidence that N-s(E-F) correlates with the structural stability of the studied materials. Our NMR measurements confirm that Al3Zr is more stable than Al3Hf with respect to the D0(23) structure.

  DOI：

  10.1103/physrevb.71.195104

文献信息

• Stability and local electronic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Al</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi>M</mml:mi></mml:mrow></mml:math>(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>M</mml:mi><mml:mo>=</mml:mo><mml:mi mathvariant="normal">Zr</mml:mi></mml:mrow></mml:math>,Hf): An NMR study
  作者：C. S. Lue、B. X. Xie、S. N. Horng、J. H. Su、J. Y. Lin

  DOI：10.1103/physrevb.71.195104

  日期：——

  Al-27 NMR measurements were performed on the D0(23)-structure trialuminides Al3Zr and Al3Hf. The Knight shifts, quadrupole splittings. and spin-lattice relaxation times for each of the three crystallographic sites have been resolved. Universally small Fermi-contact Knight shifts and long relaxation times are found for both alloys. Results provide a measure of s-character Fermi-level density of states N-s(E-F) and all indication of orbital weights. In addition, there is evidence that N-s(E-F) correlates with the structural stability of the studied materials. Our NMR measurements confirm that Al3Zr is more stable than Al3Hf with respect to the D0(23) structure.
• Primary Precipitation Phases in Amorphous Hf65Al7.5Ni10Cu17.5 and Hf65Al7.5Ni10Cu12.5M5 (M = Pd and Pt) Alloys
  作者：C. Li、A. Inoue

  DOI：10.1002/1521-396x(200104)184:2<291::aid-pssa291>3.0.co;2-o

  日期：2001.4

  Amorphous Hf65Al7.5Ni10Cu17.5, Hf65Al7.5Ni10Cu12.5Pd5 and Hf65Al7.5Ni10Cu12.5Pt5 alloys were prepared and their crystallization process was studied with special emphasis on the primary precipitation phases. For the Hf65Al7.5Ni10Cu17.5 and Hf65Al7.5Ni10Cu12.5Pt5 alloys, the primary precipitation phase is a face-centered cubic Hf2Ni (fcc-Hf2Ni) phase. For the Hf65Al7.5Ni10Cu12.5Pd5 alloy, the primary precipitates contain an icosahedral quasicrystalline phase (I-phase) and an fcc-Hf2Ni phase. Further annealing at higher temperature leads to the decomposition of these primary precipitation phases to other stal;lt: crystalline phases, implying that they are in a metastable state. The effect of Pd addition on the precipitation of an I-phase in the amorphous Hf65Al7.5Ni10CU17.5 alloy was discussed based on the evaluation of chemical affinity and atomic radius.
• The hafnium aluminides HfAl3 and Hf2Al3 studied by perturbed angular correlations with 181Ta and 111Cd probes
  作者：P. Wodniecki、B. Wodniecka、A. Kulińska、M. Uhrmacher、K.P. Lieb

  DOI：10.1016/s0925-8388(00)01124-5

  日期：2000.11

  The electric quadrupole hyperfine interactions for Hf-181/Ta-181 and In-111/Cd-111 probes in the polycrystalline hafnium aluminides HfAl3 and Hf,AI, were measured in the temperature range 30-1100 K. On the basis of the similarities of the numbers, sizes and asymmetries of electric field gradients, lattice site allocations were made. In all matrices, Hf-181/Ta-181 was found to substitute into the Hf site. The In-111/Cd-111 impurities were also assigned to the Hf lattice site in the low-temperature phase of HfAl3, which has DO23 structure, but appear to substitute into the two non-equivalent Al sites in the Hf2Al3 phase, which has Fdd7 crystallographic structure. (C) 2000 Elsevier Science BN. All rights reserved.