镁合金表面有机纳米薄膜的功能特性

材料研究学报

2010, Vol. 24

Issue (4): 337-342

研究论文

本期目录 | 过刊浏览

镁合金表面有机纳米薄膜的功能特性

康志新, 桑静, 刘应辉, 王芬, 龙雁, 李元元

华南理工大学机械与汽车工程学院国家金属材料近净成形工程技术研究中心广州 510640

Polymer Plating on Surface of Magnesium Alloy and Functional Characteristics of Nano Film

KANG Zhixin , SANG Jing, LIU Yinghui, WANG Fen, LONG Yan, LI Yuanyuan

School of Mechanical & Automotive Engineering, National Engineering Research Center of Near–Net–Shape Forming for Metallic Materials, South China University of Technology, Guangzhou 510640

引用本文:

康志新桑静刘应辉王芬龙雁李元元. 镁合金表面有机纳米薄膜的功能特性[J]. 材料研究学报, 2010, 24(4): 337-342.
, , , , , . Polymer Plating on Surface of Magnesium Alloy and Functional Characteristics of Nano Film[J]. Chin J Mater Res, 2010, 24(4): 337-342.

全文: PDF(1048 KB)

摘要:

采用有机镀膜技术和三嗪硫醇类有机单体在Mg--Mn--Ce镁合金表面生成了具有疏水特性的有机纳米薄膜。选取循环伏安法曲线中不同特征点研究了有机镀膜的反应机理,借助傅里叶变换红外光谱仪、X射线光电子能谱仪、椭圆偏振光谱仪和接触角测量仪表征了有机镀膜后镁合金表面薄膜的特性。结果表明, 有机镀膜过程分为电化学反应成膜和膜层层间聚合反应增厚两个阶段;镁合金与有机物单体通过化学键发生结合;随着有机镀膜反应过程的进行薄膜的厚度由9.14 nm逐渐增加到64.51 nm, 形成稳定的纳米薄膜；有机镀膜后镁合金表面的蒸馏水接触角从未镀膜的45.8^o上升到117.9^o, 实现了由亲水到疏水的功能特性转换。

关键词 ：材料表面与界面 , 镁合金 , 有机纳米薄膜 , 浸润性 , 生长机理

Abstract：

The polymeric nano film with hydrophobic feature on the surface of Mg–Mn–Ce magnesium alloy was prepared through chemical reaction with synthesized organic monomer of the triazine dithiol monosodium reacted with magnesium alloy by self–developed technique of polymer plating. The reaction mechanism during polymer plating was investigated with selected characteristic points from the curves of cyclic voltammetry. The film properties polymer–plated on magnesium alloy surface were characterized by means of FT–IR spectrometer, X–ray photoelectron spectroscopy, spectroscopic ellipsometer and contact angle meter. The results showed that the process of polymer plating included the film formation through the electrochemical reaction and film thickening by polymerization reaction between film layers. The combination between magnesium alloy and the monomer of triazine dithiol monosodium were achieved by chemical bonds. Film thickness increased gradually from 9.14 nm to 64.51 nm during the reaction process of polymer plating, and then the stabilized nano–scale film formed. Contact angle of distilled water for polymer–plated magnesium alloy rose to 117.9^oas compared with 45.8^o for the substrate; therefore the conversion of functional performance was achieved from hydrophilic to hydrophobic.

Key words： surface and interface in the materials magnesium alloy polymer nano film wettability growth mechanism

收稿日期: 2010-03-16

ZTFLH:

TG146.2

基金资助:

国家自然科学基金50673028和广州市科技支撑计划2009Z2--D811资助项目。

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https://www.cjmr.org/CN/ 或 https://www.cjmr.org/CN/Y2010/V24/I4/337

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