【摘要】 稀土能细化铝合金组织 ,提高其强度和塑性性能 ,对铝合金的后处理非常有益。以添加不同含量稀土的6 0 6 3铝合金为研究对象 ,并对其进行阳极氧化试验 ,系统地研究了不同含量的稀土对阳极氧化膜厚度的影响以及氧化液硫酸浓度、硫酸温度、氧化时间、电流密度及不同的工艺参数对铝合金膜层厚度的影响 ,以获得最佳的添加稀土含量和最合适的阳极氧化工艺参数。结果表明 ,添加稀土的 6 0 6 3铝合金比没添加稀土的 6 0 6 3铝合金有较强的接受极化能力 ,稀土可以明显地提高 6 0 6 3铝合金氧化膜厚度 ,稀土含量以 0 .2 0 %最佳。该含量的稀土 6 0 6 3铝合金获得优质氧化膜的最佳工艺条件为 :硫酸浓度 170g/L ,硫酸温度 18～ 2 2℃ ,氧化时间 4 0min ,电流密度 1.2A/dm2 。更多还原

【Abstract】 Rare earth can make the structure of aluminum alloy fine, and improve strength and plastic property of alloy that good for after treatment of alloy. The anodization of 6063 aluminum alloy with various rare earths, and the influence of concentration and temperature of sulfuric acid solution, current density, time duration of oxidation and electrolysis on the film thickness were systematically studied. The results prove that rare earth adding to aluminum alloy can increase the thickness of oxidation film, and the optimal additive mass ratio is 0.20%. Meantime the optimal process conditions to obtain high grade oxidation film are that concentration of H₂SO₄ is 170 g/L, temperature is 18～22 ℃, oxidation time is 40 min, and current density is 1.2 A/dm².更多还原