• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Microstructural, phase evolution and corrosion properties of silicon carbide reinforced pulse electrodeposited nickel-tungsten composite coatings
【24h】

Microstructural, phase evolution and corrosion properties of silicon carbide reinforced pulse electrodeposited nickel-tungsten composite coatings

机译：碳化硅增强脉冲电沉积镍钨复合涂层的组织，相变和腐蚀性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Silicon carbide (SiC) reinforced nickel-tungsten (Ni-W) coatings were successfully fabricated on steel substrate by pulse electrodeposition method (PED) and the amount of SiC was varied as 0 g/l, 2 g/l, and 5 g/l in Ni-W coating. Effect of subsequent addition of SiC on microstructures, phases and on corrosion property of the coating was investigated. Field emission scanning electron microscopy (FE-SEM) image of the surface morphology of the coating showed the transformation from the dome like structure to turtle shell like structure. X-ray diffraction (XRD) of Ni-W-5 g/l SiC showed the disappearance of (220) plane of Ni(W), peak splitting in major peak of Ni(W) and formation of distinct peak of W(Ni) solid solution. Absence of (220) plane, peak splitting and presence of W(Ni) solid solution was explained by the high resolution transmission electron microscopy (HR-TEM) images. Tafel polarization plot was used to study the corrosion property of the coatings in 0.5 M NaCl solution. Ni-W-5 g/l SiC coating was showed higher corrosion resistance (i.e. similar to 21% increase in corrosion potential, E-corr) compared to Ni-W coating. Two simultaneous phenomena have been identified for the enhanced corrosion resistance of Ni-W-5 g/l SiC coating. (a) Presence of crystallographic texture (b) formation of continuous double barrier layer of NiWO4 and SiO2. (C) 2015 Elsevier B.V. All rights reserved.
机译：通过脉冲电沉积法（PED）在钢基底上成功制备了碳化硅（SiC）增强的镍钨（Ni-W）涂层，并且SiC的含量分别为0 g / l，2 g / l和5 g / l l采用镍钨涂层。研究了随后添加SiC对涂层的微观结构，相和腐蚀性能的影响。涂层表面形貌的场发射扫描电子显微镜（FE-SEM）图像显示了从圆顶状结构向龟壳状结构的转变。 Ni-W-5 g / l SiC的X射线衍射（XRD）显示Ni（W）的（220）面消失，Ni（W）主峰中的峰分裂和W（Ni）的明显峰的形成） 实在的方法。高分辨率透射电子显微镜（HR-TEM）图像解释了（220）平面的缺乏，峰分裂和W（Ni）固溶体的存在。塔菲尔极化图用于研究涂层在0.5 M NaCl溶液中的腐蚀性能。与Ni-W涂层相比，Ni-W-5 g / l SiC涂层显示出更高的耐蚀性（即，腐蚀电位E-corr升高了21％）。为了提高Ni-W-5 g / l SiC涂层的耐腐蚀性，已经发现了两种同时发生的现象。 （a）晶体织构的存在（b）NiWO4和SiO2的连续双势垒层的形成。 （C）2015 Elsevier B.V.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号