J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (01): 90-94.

• Letters • 上一篇    下一篇

蠕变行为的实验性研究及其对电沉积镍镀层力学性能的影响

Zengsheng Ma;  Shiguo Long;  Yong Pan and Yichun Zhou   

  1. Key Laboratory of Low Dimensional Materials & Application Technology of Ministry of Education; Faculty of Materials;
    Optoelectronics and Physics; Xiangtan University; Xiangtan 411105; China
  • 收稿日期:2007-08-01 出版日期:2009-01-28 发布日期:2009-10-10
  • 通讯作者: Yichun Zhou
  • 基金资助:

    国家自然科学基金

Creep Behavior and Its Influence on the Mechanics of Electrodeposited Nickel Films

Zengsheng Ma, Shiguo Long, Yong Pan and Yichun Zhou†   

  1. Key Laboratory of Low Dimensional Materials & Application Technology of Ministry of Education, Faculty of Materials,
    Optoelectronics and Physics, Xiangtan University, Xiangtan 411105, China
  • Received:2007-08-01 Online:2009-01-28 Published:2009-10-10
  • Contact: Yichun Zhou

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摘要：

为提高纳米压痕测量硬度和弹性模量结果的准确性和可靠性，对其蠕变行为进行评价是很必要的。蠕变依赖于材料本身的性质并在几秒之内降低到一个很小的值。但是，蠕变影响到了最大压痕深度以及造成实验误差的卸载初期曲线斜率。本论文对镍镀层蠕变行为做了系统的分析。而且对加载时间很保载时间的影响进行了研究。结果显示，随着加载时间的增加，蠕变量减小，却随保载时间的增加而增加。弹性模量在保载时间很短时是非常不可靠的。如果保载时间足够长，加载时间对硬度很弹性模量并没有明显的影响。

关键词: 纳米压痕;硬度;弹性模量;蠕变

Abstract:

In order to improve the accuracy and comparability of hardness and elastic modulus measurements in nanoin- dentation, an evaluation of the creep behavior and its influence on the mechanical properties of the electrode- posited nickel film has been conducted. The influence of loading time and hold period on the hardness and elastic modulus results at maximum load 5000 μN has also been examined. It is found that with increasing the loading time, the creep value is decreased. However, the creep value is increased when the hold period is increased. The elastic modulus results are more reliable if the hold period is longer. If the hold period is long enough, the loading time has no remarkable effect on the hardness and elastic modulus measured.

Key words: Nanoindentation, Hardness, Elastic modulus, Creep