电化学和光谱法研究镍镀层表面肉豆寇酸配合物膜(英文)

Electrochemical and Spectroscopy Investigations on the Myristic Acid Coordination Compounds Films on Nick Plate Surface

用加速化学和电化学腐蚀实验(LSV)研究了一系列有机缓蚀剂在镍镀层表面形成的配合物膜的耐蚀性,结果表明,肉豆寇酸在镍镀层表面形成的膜耐蚀效果最佳。采用XPS和AES研究了配合物膜层的结构与性能,以及在金属表面的成键特征和波谱变化,探讨了配合物膜的组成、性能、结构、化学状态和形成机理。配合物膜由镍的氧化物和镍的肉豆寇酸配合物组成,其中Ni和O分别呈+2、+3和-2价。

Through accelerated chemical and electrochemical corrosion tests, we studied the anticorrosive effects of the coordination compound films formed by a series of organic inhibitiors on nick plate surface. Results have shown that the films formed by myristic acid got the best corrosion-resistant result. XPS and AES determinations were carried to investigate the bonding features and spectral changes of the coordination compound films. The mechanism for films formation and the relationships between these films structure and the observed inhibition behavior are discussed. The films are found to actually be the mixture of nickel oxide and the myristic acid coordination compounds, and Ni existed as Ni（Ⅱ） and Ni （Ⅲ）, O as -2 valence states.