采用溶胶-凝胶法与浸渍提拉法在经过黑化处理后的普通低碳钢上制备了纳米TiO2涂层.分别研究了不同热处理温度以及不同提拉次数所得的纳米TiO2/Iron oxides/Fe在25g/L Na2CO3溶液中,在无光照和紫外光照射下的腐蚀电位.结果表明,在无光照和紫外光照射下,纳米TiO2/Iron oxides/Fe的腐蚀电位均低于基体的腐蚀电位.纳米TiO2涂层可作为光生阳极从而对低碳钢基体起到阴极保护作用.其最佳工艺条件为提拉4～5次,400℃下热处理1 h.
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