Influence of lanthanum on passivity behavior of CrMnFeNi high entropy alloys

Molten salt synthesis of CrMnFeNi alloy nanopowder passivated by TiOx–ZrOy shell used as a superior catalyst support in liquid-phase hydrogenation

“…So, it is speculated that the formed metallic Ni could alloy with metallic Fe rst, and next the Ni-Fe alloy similarly react with metallic Cr. Since equimolar CrMnFeNi is a stable HEA, [19][20][21] it is considered that further alloying of the formed CrMnFeNi with Ti and Zr could hardly occur and the unalloyed Ti and Zr remained around the CrMnFeNi alloy particles. In the subsequent washing treatments, the metallic Ti and Zr were oxidized to be in an oxide form surrounding the CrMnFeNi alloy particles.…”

“…In this study, we prepared a CrMnFeNi alloy nanopowder passivated by a TiO x -ZrO y surface shell, expressed as TiO x -ZrO y / CrMnFeNi, using a molten salt synthesis method. An equimolar CrMnFeNi solid solution alloy is known as one kind of highentropy alloy (HEAs), [19][20][21] piquing the interest of researchers these days because of their superior physical/chemical properties. [22][23][24][25] Since the work functions of Cr (4.5 eV), Mn (4.1 eV), and Fe (4.7 eV) are lower than Ni (5.2 eV), the CrMnFeNi alloy can have a lower work function than Ni.…”

Growth Kinetics of Multi-Oxide Passive Film Formed Upon the Multi-Principal Element Alloy AlTiVCr: Effect of Transpassive Dissolution of V and Cr

“…Similar parameters are used in the case of passive metals and alloys. [57][58][59] The apparent capacitance can be estimated from the imaginary part of the interfacial impedance (Z″) using Eq. 9.…”

Simulation and Optimization of Shot Peening Process for CoCrFeNiAlx High-Entropy Alloy

“…It can be seen from Table 1 that according to the chemical composition of the above simulated experimental materials, they can be effectively cut. In this paper, the high entropy alloy is cut into a sample that meets the observation requirements using the electric spark cutting method, and a unified heat treatment process is carried out to obtain a consistent micro-shot peening fabric [29]. The heat treatment's temperature is kept at 830 • C, and the oil quenching treatment is carried out for 20 min to generate a single β phase structure.…”