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首页> 外文会议>International Workshop on Advanced Metallic Materials and Processing Techniques for Aeronautical Applications; 20051118-20; Nanjing(CN) >Preparation and hot-dip galvanizing application of CeO_2/Zn nanocomposite
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Preparation and hot-dip galvanizing application of CeO_2/Zn nanocomposite

机译：CeO_2 / Zn纳米复合材料的制备及热浸镀锌应用

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摘要

CeO_2/Zn nanocomposite was fabricated by high-energy ball milling and subsequent hot-press sintering under vacuum. The produced nanocomposite powders and bulks were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) with an energy dispersive X-ray spectrum (EDS). The as-fabricated nanocomposite bulks were added successfully into the hot-dip galvanizing bath to improve the corrosion resistance of coatings. The results show that after milling for 120 min, nano-sized CeO_2 particles are distributed homogeneously on the surface of fine Zn particles to form spherical-like nanocomposite powder with narrow grain size distribution. The subsequent sintering does not lead to a dramatic grain growth, and the distribution of CeO_2 nanoparticles in the composite bulk is also homogeneous. With the addition of as-prepared bulks, the corrosion resistance of the galvanized coatings is improved obviously. It provides a feasible route for adding CeO_2 nanoparticles into the hot-dip galvanized coating.
机译：CeO_2 / Zn纳米复合材料是通过高能球磨和随后的真空热压烧结制备的。使用具有能量色散X射线光谱（EDS）的X射线衍射（XRD），透射电子显微镜（TEM）和扫描电子显微镜（SEM）对所生产的纳米复合粉末和块体进行表征。将制成的纳米复合材料块体成功添加到热浸镀锌浴中，以提高涂层的耐腐蚀性。结果表明，研磨120min后，纳米CeO_2颗粒均匀分布在细小的Zn颗粒表面，形成了粒径分布较窄的球形纳米复合粉体。随后的烧结不会导致明显的晶粒长大，并且CeO_2纳米粒子在复合体中的分布也很均匀。通过添加预制的块料，镀锌层的耐蚀性明显提高。它为将CeO_2纳米颗粒添加到热浸镀锌涂层中提供了可行的途径。

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