Tsau Chun-Huei, Wang Wei-Li
Institute of Nanomaterials, Chinese Culture University, Taipei 111, Taiwan.
Materials (Basel). 2017 Dec 23;11(1):16. doi: 10.3390/ma11010016.
This study investigates the effects of niobium and molybdenum on FeCoNi alloy, including on the microstructures and hardness of FeCoNiNbMo and FeCoNiNb alloys, and the polarization behaviors of these alloys in 1 M sulfuric acid and 1 M sodium chloride solutions. The results in this study indicate that both FeCoNiNbMo and FeCoNiNb alloys had a dual-phased dendritic microstructure; all of the phases in these alloys were solid solution phases, and no ordering was observed. Therefore, the solid solution effect significantly increased the hardness of these two alloys; in particular, FeCoNiNb alloy had the highest hardness of the alloys of interest. The corrosion resistance of FeCoNiNbMo and FeCoNiNb alloys was less than that of FeCoNi alloy because of their dual-phased dendritic microstructures. The corrosion resistance of the FeCoNiNbMo alloy exceeded that of the FeCoNiNb alloy in these solutions. However, FeCoNiNbMo and FeCoNiNb alloys exhibited a favorable combination of corrosion resistance and hardness.
本研究调查了铌和钼对FeCoNi合金的影响，包括对FeCoNiNbMo和FeCoNiNb合金的微观结构和硬度，以及这些合金在1 M硫酸和1 M氯化钠溶液中的极化行为的影响。本研究结果表明，FeCoNiNbMo和FeCoNiNb合金均具有双相树枝状微观结构；这些合金中的所有相均为固溶体相，未观察到有序化现象。因此，固溶效应显著提高了这两种合金的硬度；特别是，FeCoNiNb合金在所研究的合金中硬度最高。由于其双相树枝状微观结构，FeCoNiNbMo和FeCoNiNb合金的耐腐蚀性低于FeCoNi合金。在这些溶液中，FeCoNiNbMo合金的耐腐蚀性超过了FeCoNiNb合金。然而，FeCoNiNbMo和FeCoNiNb合金表现出耐腐蚀性和硬度的良好组合。
