氫氧化鈉濃度對(duì)鎂合金微弧氧化膜性能影響畢業(yè)論文-資料下載頁
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【導(dǎo)讀】NaOH，研究NaOH濃度對(duì)鎂合金微弧氧化膜性能的影響。濃度的增加，溶液電導(dǎo)率增加，氧化終電壓下降。膜中磷含量降低，但對(duì)氧化膜耐蝕性影響不大。鎂是地殼中第三最豐富的元素，儲(chǔ)量占地殼的%，僅次于鋁和鐵?？?厘3，熔點(diǎn)℃。包括骨及細(xì)胞的形成，與神經(jīng)肌肉和心臟功能有密切關(guān)系。由于運(yùn)動(dòng)，特別是長時(shí)間高強(qiáng)度運(yùn)動(dòng)大量消耗體鎂是一種參與生物體。正常生命活動(dòng)及新陳代謝過程必不可少的元素。參與維持基因組的穩(wěn)定性，并且還與機(jī)體氧化應(yīng)激和腫瘤發(fā)生有關(guān)。65%存在于骨、齒，27%分布于軟組織。膳食中促進(jìn)鎂吸收的成分主要有氨基酸、乳糖等；抑制鎂吸收。70%隨糞便排出，部分從汗和脫落的。分的鋁，可減輕結(jié)構(gòu)的重量。由于鎂和鹵素的集合力強(qiáng)，鎂是用在金屬熱還原法。鎂是用作生產(chǎn)球墨鑄鐵的球化劑。面的用量增長較快。以合成多種復(fù)雜的有機(jī)化合物。鎂由于燃燒熱高，燃。故能產(chǎn)生很強(qiáng)的固溶強(qiáng)化作用。AZ系列合金中Zn在合金中溶于α相，并在晶
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