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Preparation and Characterization of Nanostructured Ni-TiN Composite Films
Jie Wang1, Chao Cai2, Shi-liang Ma3, Fa-he Cao1, Zhao Zhang*1, Jian-qing Zhang1
1.Department of Chemistry, Zhejiang University, Hangzhou 310027, China;2.School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China;3.Department of Materials and Chemistry, Zhejiang University, Hangzhou 310027, China
Abstract:
Ni-TiN nanocomposite films were produced from a Ni plating bath containing TiN nanopar-ticles by using dc electroplating method. The structure and surface morphology of Ni-TiN composite coatings were analyzed by atom force microscope, X-ray diffraction, and trans-mission electron microscopy. Meanwhile, the anti-corrosion properties, hardness and ther-mostability of Ni-TiN nanocomposite films were also investigated and compared with the traditional polycrystalline Ni coatings. The results show that, compared with the tradi-tional polycrystalline Ni film, Ni-TiN nanocomposite coatings display much better corrosion resistance, higher film hardness, and thermal stability. In addition, the hardness of Ni-TiN nanocomposite coatings decreases slightly with the increase of electroplating current density,which may be due to the synergism of hydrogen evolution and faster nucleation/growth rate of nickel crystallites.
Key words:  Ni-TiN nanocomposite, Eletrodeposition, Corrosion, Hardness, Thermosta-bility
FundProject:
Preparation and Characterization of Nanostructured Ni-TiN Composite Films
王杰1, 蔡超2, 马士良3, 曹发和1, 张昭*1, 张鉴清1
1.浙江大学化学系,杭州310027;2.宁夏大学化学与化工学院,银川750021;3.浙江大学材化学院,杭州310027
摘要:
在悬浮有TiN纳米颗粒的镍镀液中,采用直流电镀方法制备了Ni-TiN纳米复合镀层. 采用原子力显微镜、X射线衍射仪和透射电镜等手段对镀层结构、表面形貌、耐蚀性能、硬度和热稳定性等进行了研究,并且与传统镍镀层的相应性能进行了比较. 结果表明,复合镀层在耐腐蚀性、硬度和热稳定性等方面都比传统镍镀层有了显著提高;由于电流密度对阴极析氢和镍晶粒的成核/生长速率的影响,Ni-TiN纳米复合镀层的硬度随着电镀电流密度的增加而轻微减小.
关键词:  Ni-TiN纳米复合镀层,电沉积,腐蚀性能,硬度,热稳定性
DOI:10.1088/1674-0068/23/03/347-350
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