FeCoNiCr高熵合金涂层的制备及工艺参数优化

Preparation of FeCoNiCr High Entropy Alloy Coatings and Optimization of Process Parameters

摘要:

以柠檬酸和柠檬酸钠为络合剂，采用硫酸盐体系电沉积法制备了FeCoNiCr高熵合金镀层。研究了电流密度、镀液温度、pH对镀层组成、微观形貌、晶体结构和硬度的影响。结果表明，所制备的FeCoNiCr高熵合金镀层为非晶态，镀层均匀。优化后工艺参数为：pH=2.5，温度25 ℃，电流密度25 A?dm^-2。

Abstract:

FeCoNiCr high entropy alloy coatings were prepared by electrodeposition in sulfate system with citric acid and sodium citrate as the complexing agent. The effects of current density, bath temperature, and pH value on the composition, morphology, crystal structure and hardness of the coatings were studied. The results show that the prepared FeCoNiCr high entropy alloy coatings are amorphous and uniform. The optimized process parameters are: pH=2.5, temperature of 25 ℃, and current density of 25 A·dm^-2.