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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Al-Cr涂层低温扩散制备及其相组成的研究
DOI: 10.3724/SP.J.1037.2010.00331, PP. 231-235
Keywords: Al-Cr涂层,离子液体,镀Al,热处理
Abstract:
通过水溶液镀Cr后再用AlCl3-EMIC(氯化1-甲基3-乙基咪唑)离子液体镀Al,制备Cr/Al复合镀层,其后通过低温扩散热处理制备Al-Cr涂层.用OM,SEM,BSE,EDS和XRD研究了短时间热处理时,热处理温度对Al-Cr涂层组成和结构的影响.结果表明,Cr/Al复合镀层在540℃时即可发生明显的互扩散,形成Al-Cr合金层.通过对复合镀层中Cr和Al镀层厚度的控制,可以得到不同组成的Al-Cr合金涂层.6.5μmCr/15μmAl的复合镀层经640℃/960min热处理,表面形成以Al8Cr5为主的合金涂层;1.6μmCr/15μmAl的复合镀层经600℃/30min热处理,可得到以Al4Cr为主的Al-Cr涂层.
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