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首页> 美国政府科技报告 >Characterization of a Procedure for Preparing 6061 Aluminum Alloy for Barrier Anodization
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Characterization of a Procedure for Preparing 6061 Aluminum Alloy for Barrier Anodization

机译：制备6061铝合金用于阻挡阳极氧化的方法的表征

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This procedure employs three etchants: 5% NaOH, 50% HNO sub 3 , and concentrated HNO sub 3 - NH sub 4 HF sub 2 . The rate at which these etchants react with 6061-T6 aluminum alloy changes as they are used repeatedly, and also as they undergo environmental interactions during storage. Samples of 6061-T6 alloy which are processed in baths simulating the effects of usage and etchant-environment interactions were analyzed using Auger electron spectroscopy and electron microprobe analysis. Other samples which were prepared similarly were barrier anodized. The anodization voltage rise time to 950 V was used as a figure of merit for evaluating the practical effects of variations in the preparation chemistry sequence. It was observed that certain variations can make a significant difference in the anodization characteristics. For example, alloy samples which are only solvent cleaned typically take 113% more time to reach 950 V than samples which have been solvent cleaned and chemically etched. Samples which have been etched in 5% NaOH and 50% HNO sub 3 take 41% more time to reach 950 V compared to samples etched in all three etchants. 21 figures, 5 tables. (ERA citation 08:012689)

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