采用单辊甩带法制备Mg71+xZn24-xCa5(x=0,2,4和6)合金条带,研究合金中Mg含量对条带非晶结构形成的影响、非晶条带对直蓝偶氮颜料废水的脱色降解能力和循环使用次数.结果表明:Mg71+xZn24-xCa5(x=0,2,4和6)合金在x≤4时,能形成厚度为20～25 μm的具有非晶结构的条带.非晶条带对直蓝溶液的降解速率和脱色率随Mg含量的提高而提高,其中Mg75Zn20Ca5非晶条带在2 min内使溶液澄清,以反映特征时间表示的降解速率仅为0.47 min,以吸光度所计算的脱色率达到95.41％.与废水反应60 min后的条带,其非晶结构基本不变,表面反应产物为矿化物质,不具备污染特征.Mg75Zn20Ca5非晶条带至少可以循环使用4次以上,而保持降解能力不低于80％.
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