• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Electrodeposition of amorphous Ni-P coatings onto Nd-Fe-B permanent magnet substrates
【24h】

Electrodeposition of amorphous Ni-P coatings onto Nd-Fe-B permanent magnet substrates

机译：在Nd-Fe-B永磁体基底上电沉积非晶态Ni-P涂层

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

Decorative and protective Ni-P amorphous coatings were electroplated onto NdFeB permanent magnet from an ortho-phosphorous acid contained bath. The influences of the main electroplating technological parameters including current density, bath pH, bath temperature and H_3PO_3 on the structure and chemical composition of Ni-P coatings were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques in conjunction with X-ray diffraction (XRD), scanning transmission electron microscopy (SEM) and X-ray energy-dispersive spectrometry (EDX). The optimized amorphous Ni-P coated NdFeB can stand for ca. 180 h against neutral 3.0 wt.% NaCl salt spray without any pitting corrosion. Meanwhile, the results also showed that large phosphorous content is the precondition for Ni-P coatings to possess the amorphous structure, but too much high phosphorous content can damage the amorphous structure due to the separation of superfluous P from Ni_2P/Ni_3P and the resultant formation of multi-phase coatings (such as Ni_2P-P).
机译：装饰性和保护性Ni-P非晶态涂层从含正磷酸的镀液中电镀到NdFeB永磁体上。通过电势极化和电化学阻抗谱（EIS）技术结合X射线衍射研究了电流密度，镀液pH，镀液温度和H_3PO_3等主要电镀工艺参数对Ni-P镀层结构和化学成分的影响。 （XRD），扫描透射电子显微镜（SEM）和X射线能量色散光谱（EDX）。优化的非晶态Ni-P涂层NdFeB可以代表大约耐中性3.0 wt。％NaCl盐雾180小时，无任何点蚀。同时，结果还表明，高磷含量是Ni-P涂层具有非晶态结构的先决条件，但是过多的磷含量会由于多余的P从Ni_2P / Ni_3P中分离出来而破坏非晶态结构。多相涂层（如Ni_2P-P）的涂层。

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