Hafnium--iridium (1/3) | 12298-54-3

• 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: Hafnium--iridium (1/3)
• 英文别名: hafnium;iridium
• CAS: 12298-54-3
• 化学式: HfIr₃
• 分子量: 755.15
• InChiKey: WFNHNZBSVCXYPD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 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

• 作为产物：
  描述：

  铪 、 铱 1799.84 ℃ 、130.0 kPa 条件下， 生成 Hafnium--iridium (1/3)
  参考文献：
  名称：

  Hot press assisted synthesis and thermophysical properties of iridium intermetallic compounds

  摘要：

  The simple hot press assisted synthesis of iridium-based intermetallics, MIr3 +/- x, (M = Hf, Ta) from the powder mixtures of corresponding carbides and iridium, and the powder mixtures of the metal and iridium was proposed. The application of pressure provides the formation of dense intermetallic MIr3 +/- x phase as the main constituent. The coefficient of thermal expansion (CTE) of the TaIr3 phase was determined by means of high-temperature X-ray diffraction analysis. The CTE was evaluated to be equal to 5.2.10(-6) K-1. A set of thermophysical properties, such as spectral emissivity, linear expansion of the sample, heat capacity, thermal diffusivity, and thermal conductivity of the TaIr3-based intermetallic material were determined using the original laser-flash technique up to 2200 K. The effect of porosity and composition on the thermal conductivity of the TaIr3-based material is discussed. The results can be of interest for the evaluation of the behavior of the TaIr3-based intermetallic material at ultra-high temperatures.

  DOI：

  10.1016/j.tca.2020.178641

文献信息

• Hot press assisted synthesis and thermophysical properties of iridium intermetallic compounds
  作者：V.V. Lozanov、A.V. Utkin、A.A. Vasin、M.A. Sheindlin、N.I. Baklanova

  DOI：10.1016/j.tca.2020.178641

  日期：2020.7

  The simple hot press assisted synthesis of iridium-based intermetallics, MIr3 +/- x, (M = Hf, Ta) from the powder mixtures of corresponding carbides and iridium, and the powder mixtures of the metal and iridium was proposed. The application of pressure provides the formation of dense intermetallic MIr3 +/- x phase as the main constituent. The coefficient of thermal expansion (CTE) of the TaIr3 phase was determined by means of high-temperature X-ray diffraction analysis. The CTE was evaluated to be equal to 5.2.10(-6) K-1. A set of thermophysical properties, such as spectral emissivity, linear expansion of the sample, heat capacity, thermal diffusivity, and thermal conductivity of the TaIr3-based intermetallic material were determined using the original laser-flash technique up to 2200 K. The effect of porosity and composition on the thermal conductivity of the TaIr3-based material is discussed. The results can be of interest for the evaluation of the behavior of the TaIr3-based intermetallic material at ultra-high temperatures.