• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Production and properties of composite layers based on an Ni-P amorphous matrix
【24h】

Production and properties of composite layers based on an Ni-P amorphous matrix

机译：基于Ni-P非晶质基体的复合层的生产和性能

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

Composite layers Ni-P + Co, Ni-P + W and Ni-P + Ti were obtained in galvanostatic conditions, at j_(dep) = 0.200 A cm~(-2). The x-ray diffraction method was used to determine the phase composition of the layers and atomic absorption spectrometry was applied to specify their chemical composition. A metallographic microscope, stereoscopic microscope and Form Talysurf-type profilograph were used for cross-section and surface morphology characterization of the layers. The behaviour of the obtained layers was investigated in the process of hydrogen evolution reaction from 5 M KOH using classical methods (voltammetry, steady-state polarization) and electrochemical impedance spectroscopy (EIS). Based on recorded steady-state polarization curves, the Tafel equation parameters for this process were determined. EIS was used to study the interfacial properties at electrode overpotential DELTA E = -0.200 V. It was found that the investigated Ni-P + Co layer is characterized by increased electrochemical activity for hydrogen evolution compared to Ni-P + W and Ni-P + Ti layers. Greater activity of the Ni-P + Co layer in this process may be attributed to the developed electrode surface. The values of surface roughness factor R_f were also determined.
机译：在恒电流条件下，j_（dep）= 0.200 A cm〜（-2），获得了复合层Ni-P + Co，Ni-P + W和Ni-P + Ti。使用X射线衍射法确定各层的相组成，并采用原子吸收光谱法确定其化学组成。使用金相显微镜，立体显微镜和Form Talysurf型轮廓仪对层的横截面和表面形态进行表征。使用经典方法（伏安法，稳态极化）和电化学阻抗谱法（EIS），在5 M KOH的制氢反应过程中研究了所得层的行为。根据记录的稳态极化曲线，确定该过程的Tafel方程参数。 EIS用于研究电极超电势DELTA E = -0.200 V时的界面特性。发现与Ni-P + W和Ni-P相比，所研究的Ni-P + Co层的特征在于电化学活性提高了析氢活性+钛层。在此过程中，Ni-P + Co层的较高活性可能归因于电极表面发达。还确定了表面粗糙度因子R_f的值。

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