Corneal endothelial cell injury induced by mitomycin-C in photorefractive keratectomy: Nonrandomized controlled trial

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• 作者：Nader Nassiri ; Saman Farahangiz ; Mohammad Rahnavardi ; Laleh Rahmani ; Nariman Nassiri
• 关键词：Al-3003 ; Zn ; Roll bonding ; Bond strength ; Peel test ; Soldering
• 刊名：Journal of Cataract and Refractive Surgery
• 出版年：2008
• 出版时间：June 2008
• 年：2008
• 卷：34
• 期：6
• 页码：902-908
• 全文大小：290 K

文摘

Al-3003/Zn bi-layer soldering sheets were produced using roll bonding process at different reductions in both cold and hot conditions. The bond strengths of the bi-layer sheets were measured by peel test before and after supplemental annealing treatment. The peeled surfaces were examined using optical and scanning electron microscopy. The results indicate that by increasing the reduction in thickness during rolling and/or the annealing treatment the bond strength improves. Additionally, the decrease of initial sheet thickness and increase of rolling temperature can effectively improve the bond strength. Microscopic examinations show that the fracture type of Al-3003/Zn sheets is predominantly brittle.