电沉积Ni-Fe合金工艺及镀层耐蚀性的研究

摘要

Ni-Fe alloy coatings were fabricated by electrodeposition process. The surface morphology and structure of the Ni-Fe alloy coatings were determined, and corrosion behavior of the coatings in various medium solutions were investigated by electrochemical polarization method. The results indicated that Ni-Fe alloy coating which contains 19.23％ Fe has the optimal corrosion resistance in 5％ H2SO4 and 3.5％ NaC1 solutions. But in 5％ NaOH solution, Ni-Fe alloy coating containing 28.16 ％ Fe has the highest corrosion resistance.%采用电沉积的方法制备了Ni-Fe合金镀层,对其微观形貌和结构进行了表征,并采用电化学方法研究了所制备的Ni-Fe合金镀层在不同介质中的腐蚀行为.结果表明:在5%硫酸溶液以及3.5%氯化钠溶液中,w(Fe)为19.23%的Ni-Fe合金镀层耐蚀性最好,在5%氢氧化钠溶液中w(Fe)为28.16%的Ni-Fe合金镀层的耐蚀性最佳.