(1. 華中科技大學(xué) 化學(xué)系， 武漢 430074;
2. 南陽理工學(xué)院 生物與化學(xué)工程系， 南陽 473066)
摘 要: 針對不同均勻化處理方式會引起合金微觀組織和電化學(xué)性能變化現(xiàn)象， 采用電子探針(EPMA)、 動電位極化及恒電流極化等方法研究不同熱處理(水淬、 空冷、 爐冷)方式對Al-Zn-In合金的微觀組織和合金在3%NaCl溶液中的開路電位、 工作電位、 腐蝕形貌和電流效率等電化學(xué)性能的影響。 結(jié)果表明： 510 ℃， 10 h的均勻化處理使晶界偏析減少， 抑制析氫自腐蝕和晶粒脫落， 提高電流效率， 但對陽極開路電位、 工作電位及溶解行為的影響并不明顯， 且水淬處理試樣的電流效率最高。
關(guān)鍵字: 熱處理； 鋁合金； 犧牲陽極； 電流效率
（1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074, China;
2. Department of Biological and Chemical Engineering,
Nanyang Institute of Technology, Nanyang 473066, China）
Abstract: The effect of different heat treatments (quenching in water, cooling in air, cooling in furnace) on the microstructure and electrochemical performance of Al-Zn-In alloys in 3%NaCl solution were investigated by electron probe microanalysis (EPMA), potentiodynamic and galvanostatic polarizations. The results show that the homogenization at 510 ℃ for 10 h reduces the grain boundary segregation, restrains the hydrogen evolution and grain falling and improves the current efficiency. But the influences of homogenization on the open circuit potential, operating potential and dissolving behaviour are unobvious. The anode current efficiency of water-quenched samples is biggest.
Key words: heat treatment; aluminium alloys; sacrificial anode; current efficiency
