Lanthanum--nickel (1/6) | 380650-54-4

• 分子结构分类: 无机化合物 - 均相金属化合物 - 金属间镧系化合物
• 英文名称: Lanthanum--nickel (1/6)
• 英文别名: lanthanum;nickel
• CAS: 380650-54-4
• 化学式: LaNi₆
• 分子量: 491.045
• InChiKey: ZHVXSJYAKXKJGB-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.02
• 重原子数：
  7
• 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

• 作为产物：
  描述：

  三氢化镧 、 镍 以 melt 为溶剂， 生成 Lanthanum--nickel (1/6)
  参考文献：
  名称：

  镍添加量和微观结构对LaNi5中氢吸脱附行为的影响

  摘要：

  摘要 利用热解吸光谱(TDS) 研究了LaNi 5+ x –H ( x = 0, 1 和3) 合金的氢解吸行为。采用电弧熔炼和熔纺两种方法获得合金的不同显微组织。在电弧熔化合金的 TDS 中，对应于从 γ 相（氢化物 LaNi 5 H 6 ）向 α 相（固溶体）转变的氢解吸峰随着镍含量的增加而移至较低温度内容。另一方面，对于熔纺合金，没有观察到峰值温度对镍含量的依赖性。峰值温度的降低意味着γ相稳定性的降低。借助对压力-成分 ( P – C ) 等温线和压差扫描量热法 (PDSC) 的测量，

  DOI：

  10.1016/j.jallcom.2004.09.062

文献信息

• Effect of nickel addition and microstructure on absorption and desorption behavior of hydrogen in LaNi5
  作者：Masayuki Kondo、Kohta Asano、Yoshiaki Iijima

  DOI：10.1016/j.jallcom.2004.09.062

  日期：2005.5

  Abstract Hydrogen desorption behavior of LaNi 5+ x –H ( x = 0, 1 and 3) alloys was studied by means of the thermal desorption spectrum (TDS). Two methods of arc-melting and melt-spinning were used to obtain different microstructures of the alloys. In the TDS of the arc-melted alloys, the hydrogen desorption peak which corresponds to the transformation from the γ-phase (hydride LaNi 5 H 6 ) to the α-phase

  摘要 利用热解吸光谱(TDS) 研究了LaNi 5+ x –H ( x = 0, 1 和3) 合金的氢解吸行为。采用电弧熔炼和熔纺两种方法获得合金的不同显微组织。在电弧熔化合金的 TDS 中，对应于从 γ 相（氢化物 LaNi 5 H 6 ）向 α 相（固溶体）转变的氢解吸峰随着镍含量的增加而移至较低温度内容。另一方面，对于熔纺合金，没有观察到峰值温度对镍含量的依赖性。峰值温度的降低意味着γ相稳定性的降低。借助对压力-成分 ( P – C ) 等温线和压差扫描量热法 (PDSC) 的测量，
• Protium diffusion in La–Ni alloys
  作者：K Gunji、H Takamura、M Okada、Y Iijima

  DOI：10.1016/s0925-8388(99)00334-5

  日期：1999.12

  The effect of microstructure on the diffusion of protium (hydrogen) in La-Ni alloys was studied by the desorption method. Five alloys were prepared; one was the well known protium absorbing alloy LaNi5 with the stoichiometric composition, and the others were the two phase alloys LaNix (x=5.5-8.1) consisting of the LaNi5 phase and the Ni phase. By the analysis of the desorption curves for the temperature range 353-573 K, the diffusion coefficient of protium in the alloys was determined under the assumption that the sample particles were spheres. The Arrhenius plots of the diffusion coefficients, D, for all the alloys show linear relationships. The value of D in LaNix (x=6.0, 6.5, 8.1) increases with increasing the value of x, and they are larger than that in LaNi5, although the value of D in LaNi5.5 is the smallest in the temperature range examined. The literature value of D in LaNi5 obtained by the quasielastic neutron scattering (QNS) method is in the middle of the coefficients of the five alloys. This suggests that the effective surface area of the LaNi5 specimen for the desorption is reduced by the formation of oxide layer and that in the two phase alloys the protium diffusion is enhanced via a net work of the Ni phase deformed by the expansion of the LaNi5 phase due to the absorption of protium, although the Ni phase in LaNi5.5 is insufficient to form the network. (C) 1999 Elsevier Science S.A. All rights reserved.