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首页> 外文期刊>Japanese journal of applied physics >Effects of Current Density and Frequency on Microstructure and Mechanical Properties of Ni Stencil Masks Fabricated by Pulse Electroforming
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Effects of Current Density and Frequency on Microstructure and Mechanical Properties of Ni Stencil Masks Fabricated by Pulse Electroforming

机译：电流密度和频率对脉冲电铸Ni模板孔结构和力学性能的影响

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摘要

We fabricated Ni stencil masks using a pulse electroforming and investigated the effects of current density and frequency on the microstructure and mechanical property. In the electroforming process, the current densities were 2.5 and 5 A/dm~2 and the frequency varied from 0 (DC) to 1000 Hz at a duty cycle of 50%. Texture, microstructure, and mechanical properties varied with the current density and frequency. The preferred orientation of (220) at 2.5 A/dm~2 changed to (200) as the current density increased to 5 A/dm~2. Grain size decreased with decreasing current density or increasing frequency, probably due to a sufficient supply of Ni ions and the presence of inhibitor species. This decrease in grain size resulted in increase of hardness and wear resistance. However, with increase in current density and frequency (5 A/dm~2 and 1000 Hz), the grain size became large, as a result of faradic current during the off-time.
机译：我们使用脉冲电铸工艺制作了镍模版掩模，并研究了电流密度和频率对显微组织和机械性能的影响。在电铸过程中，电流密度为2.5和5 A / dm〜2，频率从0（DC）到1000 Hz，占空比为50％。质地，微观结构和机械性能随电流密度和频率而变化。随着电流密度增加到5 A / dm〜2，（220）在2.5 A / dm〜2时的首选取向变为（200）。晶粒尺寸随着电流密度的减小或频率的增加而减小，这可能是由于镍离子的充足供应和抑制剂种类的存在。晶粒尺寸的这种减小导致硬度和耐磨性的增加。但是，随着电流密度和频率（5 A / dm〜2和1000 Hz）的增加，晶粒尺寸变大，这是由于在关闭时间内法拉第电流引起的。

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  • 来源
    《Japanese journal of applied physics》 |2012年第9issue3期|09MJ03.1-09MJ03.5|共5页
  • 作者

    Geun Chul Park; Jun Hyuk Choi; Ji Cheol Kim; Tae Woong Kim; Keun Song; Jun Hyung Lim; Jinho Joo;

  • 作者单位

    School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea;

    School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea;

    School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea;

    School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea;

    Department of Application of Advanced Materials, Suwon Science College, Suwon, Gyeonggi 445-742, Korea;

    School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea;

    School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea;

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