高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (2): 278.

• 论文 • 上一篇    下一篇

无电解镀镍磷非晶态合金的近边结构研究

孙克宁1, 张永忠1, 姚枚1, 周德瑞1, 解金海1, 韦世强2   

  1. 1. 哈尔滨工业大学应用化学系, 哈尔滨 150001;
    2. 中国科学技术大学基础物理中心
  • 收稿日期:1995-02-13 出版日期:1996-02-24 发布日期:1996-02-24
  • 通讯作者: 孙克宁,男,31岁,副教授.
  • 作者简介:孙克宁,男,31岁,副教授.
  • 基金资助:

    中国科学院沈阳腐蚀与防护研究所国家重点实验室资助

Studies on Structure of Electroless Ni-P Alloy

SUN Ke-Ning1, ZHANG Yong-Zhong1, YAO Mei1, ZHOU De-Rui1, XIE Jin-Hai1, WEI Shi-Qiang2   

  1. 1. Harbin Institute of Technology, Harbin 150001;
    2. China Science and Technology University
  • Received:1995-02-13 Online:1996-02-24 Published:1996-02-24

摘要: 用DTA、XRD和EXAFS方法研究无电解镀镍磷合金层结构。其中含P10%(重量百分比)左右的Ni-P合金层是非晶态合金固溶体,Ni、P之间存在共价键作用,Ni-Ni键长0.25nm;Ni-P键长0.28nm;经400℃热处理1h后的含P 10%的Ni-P镀层是Ni3P晶态与Ni-P非晶态的混合物。EXAFS方法给出了镍磷合金层的结构、键长和配位原子情况,体现出EXAFS方法在研究金属结构尤其是非晶态金属结构方面的优越性。

关键词: 无电解镀Ni-P, EXAFS, XRD, DTA

Abstract: The structure of Electroless Ni-Palloy has been studied by using DTA,XRDand EXAFSmethods,The P 10%(weight percentage ratio) Ni-Pcoating is a non-crystal alloy.The action between Ni and Pis a convalent bond applied force,The lengths of Ni Ni and Ni Pbonds are 0.25 nm and 0.28 nm.The P 10% Ni-Pcoating after heat treatment at 400℃ is a mixture of Ni3Pand non-crystal Ni-P.The formation of nickel phosphonus likely structure is established by EXAFSand confirmed by experiments in contrast to DTAand XRDwhich does not provide more information.The extended X-ray absorption fine structure(EXAFS) spectrophotometry developed with the development of synchronous radiation light.It is very suitable for the studies of non-crystal alloy.The coordination environment of Ni and Pin Ni-Palloy coating has been measured by means of EXAFS.The degree of order in Ni-Palloy increases by the heat treatment.The loss of long-range order is even more pronounced with the increasing Pcontent in Ni-Pcoating.The local order around Ni in Ni-Palloy coating resembles that in Ni metal.The discription of structure may be useful for interpretation of the properties Ni-Pnon-crystal alloy coating from the view of molecular level.

Key words: Electroless plating Ni-P, EXAFS, XRD, DTA

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