In the present paper, the corrosion behavior of Hf-rich Hf₆₄Cu₁₈Ni₁₈ (at%) metallic glass (MG) was studied in acidic and alkaline media using electrochemical polarization experiments. Three different molar solutions of NaOH and HCl were used for the experiments. The results show that the glassy alloy possesses significantly high corrosion resistance in alkaline solution than acidic one. Pits are observed on the sample in acidic media, whereas alkaline sample does not show pitting. In both the solutions, primarily, HfO₂ is formed on the surface as a corrosion product. The corroded surface is non-uniformly distributed on the ribbon and found to decrease with concentration of NaOH. The non-uniform distribution is attributed to inhomogeneity in the ribbon sample. In case of HCl solution, corroded surface increases with the increase in HCl concentration. Furthermore, an attempt has been made to understand the corrosion mechanism of this MG in view of phases formed during the experiment.

本文通过电化学极化实验研究了富Hf的Hf ₆₄ Cu ₁₈ Ni ₁₈（at％）金属玻璃（MG）在酸性和碱性介质中的腐蚀行为。NaOH和HCl的三种不同摩尔溶液用于实验。结果表明，该玻璃态合金在碱性溶液中比酸性合金具有更高的耐腐蚀性。在酸性介质中的样品上观察到了凹痕，而碱性样品中没有出现点蚀。在这两种解决方案中，主要是HfO ₂作为腐蚀产物在表面上形成。腐蚀的表面在带上不均匀分布，并且发现随着NaOH浓度的降低而减少。不均匀的分布归因于带状样品中的不均匀性。在HCl溶液的情况下，腐蚀的表面会随着HCl浓度的增加而增加。此外，已经尝试根据实验过程中形成的相来理解该MG的腐蚀机理。