Chromium-Nickel-Cobalt

• 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: Chromium-Nickel-Cobalt
• 英文别名: Nickel Cobalt Chromium；chromium cobalt nickel；cobalt nickel chromium；cobalt-chromium-nickel；nickel-chromium-cobalt；chromium;cobalt;nickel
• 化学式: CoCrNi
• 分子量: 169.679
• InChiKey: SZMZREIADCOWQA-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：

  钴 、 铬 、 镍 以 melt 为溶剂， 反应 2.0h， 生成 Chromium-Nickel-Cobalt
  参考文献：
  名称：

  耐腐蚀且坚韧的多主元素铬钴镍合金

  摘要：

  对具有良好强度和延展性组合的 Cr-Co-Ni 多主元素合金 (MPEA) 进行了研究，以确定其伴随的腐蚀性能。三种合金——Cr 45 Co 27.5 Ni 27.5、Cr 33.3 Co 33.3 Ni 33.3和Cr 25 Co 37.5 Ni 37.5以再结晶和冷加工状态生产，并在模拟海水电解质中测试了它们的电化学响应。增加 Cr 含量提高了屈服强度 (σ y) 和极限拉伸强度 (UTS)，同时保持高 (>40%) 的均匀伸长率。动电位极化和电化学阻抗谱表明合金在模拟海水中具有高耐腐蚀性，特别是富铬合金 (Cr 45 Co 27.5 Ni 27.5 )。此外，经过 40% 的冷加工后，Cr 45 Co 27.5 Ni 27.5合金的耐腐蚀性能进一步提高。Cr 45 Co 27.5 Ni 27.5合金显示的机械和腐蚀性能超过了传统结构合金，如镍超合金、不锈钢和大多数 3d 过渡金属 M

  DOI：

  10.1016/j.jallcom.2021.161107
• 作为试剂：
  描述：

  1,2-二苯乙烷 在 Chromium-Nickel-Cobalt N-羟基邻苯二甲酰亚胺 、 氧气 、 苯甲醛 作用下， 以 溶剂黄146 为溶剂， 22.0 ℃ 、100.0 kPa 条件下， 反应 7.0h， 以44%的产率得到二苯基乙酮
  参考文献：
  名称：

  De Vondervoort, Lizette Schmieder-van; Bouttemy, Sabine; Heu, Ferdinand, European Journal of Organic Chemistry, 2003, # 3, p. 578 - 586

  摘要：

  DOI：

文献信息

• Elastic moduli and thermal expansion coefficients of medium-entropy subsystems of the CrMnFeCoNi high-entropy alloy
  作者：G. Laplanche、P. Gadaud、C. Bärsch、K. Demtröder、C. Reinhart、J. Schreuer、E.P. George

  DOI：10.1016/j.jallcom.2018.02.251

  日期：2018.5

  Abstract Elastic moduli of a set of equiatomic alloys (CrFeCoNi, CrCoNi, CrFeNi, FeCoNi, MnCoNi, MnFeNi, and CoNi), which are medium-entropy subsystems of the CrMnFeCoNi high-entropy alloy were determined as a function of temperature over the range 293 K–1000 K. Thermal expansion coefficients were determined for these alloys over the temperature range 100 K–673 K. All alloys were single-phase and had the

  摘要 作为 CrMnFeCoNi 高熵合金的中熵子系统的一组等原子合金（CrFeCoNi、CrCoNi、CrFeNi、FeCoNi、MnCoNi、MnFeNi 和 CoNi）的弹性模量被确定为 293 范围内温度的函数K–1000 K。在 100 K–673 K 的温度范围内确定了这些合金的热膨胀系数。所有合金都是单相的，具有面心立方 (FCC) 晶体结构，除了两相的 CrFeNi在 FCC 基体中含有少量体心立方 (BCC) 析出物的合金。此处获得的热膨胀系数和弹性模量的温度依赖性对于量化基本方面（如固溶强化）和结构分析/设计非常有用。使用上述结果，
• Effect of silicon addition on the microstructures, mechanical properties and helium irradiation resistance of NiCoCr-based medium-entropy alloys
  作者：Shaofei Liu、Weitong Lin、Yilu Zhao、Da Chen、Guma Yeli、Feng He、Shijun Zhao、Ji-jung Kai

  DOI：10.1016/j.jallcom.2020.156162

  日期：2020.12

  A series of NiCoCrSix (x 1/4 0, 0.1, 0.2, 0.3) medium-entropy alloys were synthesized to investigate the effect of Si addition on the microstructures, mechanical properties and helium irradiation resistance of the NiCoCr-based alloys. The microstructures and the phase evolution of these alloys were examined using electron microscopy as well as the existing models. The results show that the alloys exhibit a single face-centered-cubic structure when the Si content is in the range of 0-6.25 at.%, whereas phase decomposition occurs as the Si content further increases (similar to 9 at.%). Comparing with NiCoCr, NiCoCrSi0.2 exhibited improved strength without sacrificing the ductility. The yield strength and ultimate tensile strength increased from 438 to 599 MPa and 921 to 1032 MPa, respectively, whilst the ductility kept as high as similar to 50%. Our analysis indicates that the increased strength is mainly ascribed to the grain boundary strengthening. The large ductility is primarily due to the low stacking fault energy and shear modulus of the NiCoCrSi0.2 alloy, which makes mechanical twinning in small grains accessible and provides a steady strain-hardening rate in a wide strain regime. Besides, the enhanced compositional complexity and local lattice distortion induced by the introduction of Si can improve the helium irradiation resistance of NiCoCr, resulting in reduced average bubble size. (C) 2020 Elsevier B.V. All rights reserved.
• Effect of aluminum addition on solid solution strengthening in CoCrNi medium-entropy alloy
  作者：Maya Putri Agustianingrum、Shuhei Yoshida、Nobuhiro Tsuji、Nokeun Park

  DOI：10.1016/j.jallcom.2018.12.065

  日期：2019.4

  Solid solution strengthening effect was investigated in AlxCoCrNi medium-entropy alloy (MEA) with different Al content (x = 0-7 at.%). The result of X-ray diffraction indicates that the fully recrystallized phase was a single face-centered cubic (FCC) structure for all compositions. The average grain size regarding a twin boundary as a grain boundary was approximately 16 mu m. Tensile testing shows that the yield strength increases with the addition of Al. Here, Labusch's approach to random solid solution alloys is applied to confirm the strengthening mechanism in AlxCoCrNi MEA by using lattice constants and elastic moduli. The experimental results were found to be in good agreement with quantitative predictions of the solid solution contribution in AlxCoCrNi MEA. (C) 2018 Elsevier B.V. All rights reserved.
• Effects of tungsten additions on the microstructure and mechanical properties of CoCrNi medium entropy alloys
  作者：Ruobin Chang、Wei Fang、Xi Bai、Chaoqun Xia、Xin Zhang、Haoyang Yu、Baoxi Liu、Fuxing Yin

  DOI：10.1016/j.jallcom.2019.03.235

  日期：2019.6

  We element has a much higher atomic radius and Young's modulus than that of Co, Cr and Ni elements. In this work, the effects of W additions on recrystallized behaviors, mechanical properties and plastic deformation of CoCrNi medium entropy alloy are investigated. The results indicate recrystallized behaviors of alloys are retarded as the increase of W content. The activation energy of (CoCrNi)(97)W-3 alloy dramatically increases (393.3 kJ/mol), indicating slow grain coarsening kinetics. For completely recrystallized alloys annealed at 900 degrees C with low W content (1 at. %), grain boundary hardening is the predominant reason for the yield strength increment compared with the CoCrNi alloy, but for alloys with high W content (3 at. %), the solid solution hardening and grain boundary hardening have the same contributions on the yield strength increment (similar to 120 MPa). The lattice friction stress and Hall-Petch slope of (CoCrNi)(97)W(3 )alloy are 291 MPa and 487 MPa mu m(-0.5), respectively. Overall, 3 at. % W additions improve yield strength of CoCrNi alloy by similar to 33%, and maintain high ductility and work hardening ability. (C) 2019 Elsevier B.V. All rights reserved.
• Mechanism of grain refinement in an equiatomic medium-entropy alloy CrCoNi during hot deformation
  作者：Guoai He、Yifan Zhao、Bin Gan、Xiaofei Sheng、Yu Liu、Liming Tan

  DOI：10.1016/j.jallcom.2019.152382

  日期：2020.1

  With promising mechanical properties, the newly developed medium-entropy alloy (MEA) has aroused widespread interest recently. Plastic deformation processes including hot working are usually adopted to refine the grain of many alloys and thereby enhance the strength, hardness, and wear resistance at low temperatures. So far, few discoveries have reported the mechanism of grain refinement during hot deformation on MEA, especially for CrCoNi. In this article, plastic deformation at different conditions was intentionally designed to uncover the underlying mechanism of grain refinement in CrCoNi MEA alloy. Unlike many other alloys with low stacking fault energy, the occurrence of continuous dynamic recrystallization during hot deformation of CrCoNi alloy has been unexpectedly discovered, which is proved as the dominating mechanism for grain refinement of the current alloy. (C) 2019 Elsevier B.V. All rights reserved.