| 汽车用合金化热镀锌板镀层剥离行为的分析 |
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| 引用本文： | 徐春. 汽车用合金化热镀锌板镀层剥离行为的分析[J]. 材料保护, 2009, 42(1) |
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| 作者姓名： | 徐春 |
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| 作者单位： | 上海应用技术学院材料系,上海,200233 |
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| 基金项目： | 上海教委基金，上海市教委重点学科建设项目 |
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| 摘 要： | 为了研究合金化热镀锌层与基体的剥离性能,设计了一种用于剥离合金化热镀锌层的特殊试验装置和专用胶.利用该装置可以在普通的万能拉伸仪上将合金化热镀锌层从镀锌板基体上剥离下来,同时测定出其镀层脱落过程的剥离力,发现镀层剥离时剥离力曲线趋于水平线.扫描电镜观察结果显示,镀层整体与基体分离,X射线衍射分析剥离前试样由г,г1,δ和α-Fe相构成,剥离后基体侧含有г,г1,α-Fe相,镀层侧只有г,г1和δ相.这说明合金化热镀锌层在外力的作用下出现了沿镀层与基体的交界层(г+г1)开裂而发生剥离.
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| 关 键 词： | 合金化热镀锌层 剥离性能 评价方法 |
Peeling Behavior of Hot-Dipped Galvanizing Alloying Coating on Automobile Steel Sheets |
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| XU Chun. Peeling Behavior of Hot-Dipped Galvanizing Alloying Coating on Automobile Steel Sheets[J]. Journal of Materials Protection, 2009, 42(1) |
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| Authors: | XU Chun |
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| Affiliation: | XU Chun(Department of Material Engineering,Shanghai Institu-te of Technology,Shanghai 200233 China) |
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| Abstract: | A special apparatus was developed to peel hot-dipped galvanizing coating from automobile steel sheet substrate.Using the apparatus,the galvanized coatings were peeled off zinc-plated steel sheets with a universal drawing test rig,and the peeling load of the galvanized coatings was meas-ured.Moreover,the morphology of the cross-section of the galva-nized coating was observed using a scanning electron microscope,and the changes in the phase composition of the samples before and after peeling test was analyzed... |
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| Keywords: | galvanized alloying coating peeling behavior analysis |
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