Identifying interlayer surface adhesion failure mechanisms in tinplate packaging steels
Identifying interlayer surface adhesion failure mechanisms in tinplate packaging steels
复制标题
识别马口铁包装钢的层间表面粘附失效机制
DOI：
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发表时间：
2019
影响因子：
2.6
通讯作者：
N. Mcmurray
中科院分区：
文献类型：
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作者：
C. Melvin;E. Jewell;J. Miedema;K. Lammers;A. Vooys;A. Allman;N. Mcmurray
镀锡板的表面形态和化学成分在制造过程中进行调整，以满足其后续产品使用的需求，最常见的是视觉外观和食品包装稳定性。在工业镀锡生产线上进行了一项综合实验研究，通过X射线衍射（XRD）、X射线光电子能谱（XPS）、白色光干涉仪（WLI）、光学成像和漆附着力测量来改变表面粗糙度和锡涂层重量。增加锡重量通过产生更厚的无序氧化锡层而降低粘附力，所述无序氧化锡层在剪切力下具有更大的断裂倾向。没有证据表明基底粗糙度改善了漆的附着力。失效位置的分析确定了钝化层下方的氧化锡层中的断裂。这些发现对下一代镀锡板钝化材料产生了影响，因为已经清楚地表明，氧化锡厚度的增长，特别是当非结构化时，对漆的附着力有不利影响。
Tinplate surface morphology and chemistry is adjusted during the manufacturing process in order to meet the demands of its subsequent product use, the commonest being visual appearance and food packaging stability. A comprehensive experimental study on an industrial tinning line varied the surface roughness and the tin coating weight with the characterization through X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS), white light interferometer (WLI), optical imaging, and lacquer adhesion measurement. Increasing tin weight lowers the adhesion through the production of a thicker disorganized tin oxide layer which has a greater tendency to fracture under shearing forces. There is no evidence that the substrate roughness improves the adhesion of the lacquer. Analysis of the failure location identifies fracture in the tin oxide layer below the passivation layer. The findings have impacts on the next generation of passivation materials for tinplate as it has been clearly demonstrated that growth in tin oxide thickness, particularly when unstructured, has a detrimental impact on lacquer adhesion.