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就传统工艺生产的和用连续铸轧工艺生产的AA1000与3000系合金的显微组织对点腐蚀敏感性之影响进行了研究。与AA3103合金相当的用连续铸轧工艺生产的板材,其全硬状态(H28)的抗点腐蚀能力比其半硬状态(H14)的好,这看来是由于在连续铸轧板材中,固溶于基体内的锰含量高,以及阴极金属间化合物质点的密度低所致。在经阳极氧化的状态下,连续铸轧工艺生产的板材中,由金属间化合物质点引起的氧化膜缺陷极少,所以它的抗点腐蚀性能普遍高于传统工艺生产的材料。
The effects of the microstructures of AA1000 and 3000 alloys produced by the conventional process and produced by the continuous casting process on the pitting corrosion susceptibility were studied. Compared with the alloy AA3103, the sheet produced by the continuous casting process had better resistance to pitting corrosion than the semi-hard state (H14) due to its solidified state The manganese content dissolved in the matrix is high, and the density of the cathode intermetallic compound particles is low. In the anodized state, continuous casting process sheet produced by the intermetallic compound particles caused by very few oxide film defects, so its anti-point corrosion properties are generally higher than the traditional process of production of materials.