Cobalt;hafnium | 12017-26-4

• 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: Cobalt;hafnium
• 英文别名: cobalt;hafnium
• CAS: 12017-26-4
• 化学式: Co₂Hf
• 分子量: 296.476
• InChiKey: OOVPEOJTSYNMSX-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  3
• 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 、 钴 以 neat (no solvent) 为溶剂， 生成 Cobalt;hafnium
  参考文献：
  名称：

  Note on the Hf-Co phase diagram

  摘要：

  DOI：

  10.1016/0022-5088(78)90111-x

文献信息

• Magnetism of coexisting rhombohedral and orthorhombic Hf2Co11 phases in rapidly quenched Hf2Co11B
  作者：A. Musiał、Z. Śniadecki、J. Marcin、J. Kováč、I. Škorvánek、B. Idzikowski

  DOI：10.1016/j.jallcom.2015.12.186

  日期：2016.4

  one showing hard magnetic properties. Annealing of fully amorphous alloy resulted in the lower coercive field in comparison to that of annealed partially crystalline ribbon. From the point of view of exchange coupling between magnetic phases and magnetic hardening, the optimum annealing temperature and time were determined to be 570 °C and 60 min, for partially crystalline sample. Annealing at 650 °C

  摘要 研究了热处理引起的晶体结构演变及其对两种完全非晶态和部分晶态的熔纺 Hf2Co11B 合金磁性能的影响。为了通过诱导具有高各向异性的纳米晶相的形成来改善硬磁性能，对铸态薄带进行退火。X 射线衍射和磁性测量证实了两种 Hf2Co11 相的共存，以不同的结构结晶，菱形相具有硬磁性。与退火的部分结晶带相比，全非晶合金的退火导致更低的矫顽场。从磁相与磁硬化的交换耦合来看，对于部分结晶样品，最佳退火温度和时间确定为 570 °C 和 60 分钟。在 650 °C 下退火 1 小时会导致 HfCo3B2 相超过临界值并导致矫顽场降低。等温退火将磁晶各向异性常数 K1 从淬火样品的 7.52 增加到部分结晶带的 12.11 Merg/cm3。淬火纳米晶体的存在导致退火后更高的矫顽场，高达 3.23 kOe。11 Merg/cm3 部分结晶带。淬火纳米晶体的存在导致退火后更高的矫顽场，高达 3.23
• Magnetic properties of Hf2(FexCo1−x)11B (x = 0.2, 0.4) alloys synthesized from structurally metastable phases
  作者：A. Musiał、J. Kováč、Z. Śniadecki

  DOI：10.1016/j.jmmm.2020.167008

  日期：2020.11

  Crystalline structure, thermal stability and magnetic properties of Hf-2(FexCa1-x)(11)B (x = 0.2, 0.4) alloys were investigated and compared to those of well-known Hf2Co11B parent compound. Fully amorphous ribbons were synthesized by rapid quenching. The increasing amount of Fe resulted in higher thermal stability of the amorphous ribbons, as the crystallization temperature increased from 622 to 632 degrees C for x = 0.2 and 0.4, respectively. Hf2Co11 (in rhombohedral and orthorhombic structure) and HfCo2 precipitate in Hf-2(Fe0.2Co0.8)(11)B and Hf-2(Fe0.4Co0.6)(11)B isothermally annealed at T = 610 degrees C. Fe-containing phases, as (FeCo)(3)B and alpha-Fe, were also formed. Moreover, annealing at T = 665 degrees C resulted in the formation of HfCo3B2 phase regardless of composition. The highest value of magnetization saturation was obtained for Hf-2(Fe0.4Co0.6)(11)B melt-spun sample, while the coercive field and anisotropy constant were maximized for Hf-2(Fe0.2Co0.8)(11)B after heat treatment at T = 610 degrees C.