李保松,张文,环宇星,张薇薇.SiC对Ni-W合金耐蚀耐磨性能的强化作用[J].稀有金属材料与工程,2017,46(10):3129~3134.[Li Baosong,Zhang Wen,Huan Yuxing,Zhang Weiwei.Effect of SiC on the Corrosion and Wear Resistance of the Ni-W Alloys[J].Rare Metal Materials and Engineering,2017,46(10):3129~3134.]
SiC对Ni-W合金耐蚀耐磨性能的强化作用
投稿时间:2016-08-19  修订日期:2016-11-10
中文关键词:  电沉积  SiC  Ni-W/SiC  耐蚀性  纳米复合镀层
基金项目:国家自然科学基金资助(项目号51301061, 51679076),中央高校基本业务费项目资助(项目号2013B32614)
中文摘要:
      为提高严苛海洋环境下金属机件的服役性能,本文通过电沉积方法制备了Ni-W和Ni-W/SiC复合镀层。利用扫描电子显微镜(SEM)、能谱分析(EDS)和X射线衍射(XRD)等技术研究了SiC对Ni-W合金微观结构和性能的影响,采用电化学方法研究了复合镀层在3.5% NaCl溶液中的耐蚀性能,以探讨其海水综合防护性能。研究表明,经表面处理的SiC可诱导形核促进晶体生长,使Ni-W合金晶粒变细,镀层完整致密。SiC纳米颗粒均匀分布在Ni-W/SiC中,可有效提高镀层硬度及耐磨性,同时Ni-W/SiC也具有比Ni-W合金更好的耐蚀性能,在多因素交互作用的海洋环境中将具有更长的防护寿命,具有良好的应用前景
Effect of SiC on the Corrosion and Wear Resistance of the Ni-W Alloys
英文关键词:electrodeposition  SiC  Ni-W/SiC alloys  corrosion resistance, nano composite coatings
英文摘要:
      To improve the service performance of metal parts in harsh marine environment, the effects of SiC on the corrosion and wear resistance of the Ni-W Alloys were investigated by scanning electron microscopy (SEM), energy spectrum analysis (EDS) and X ray diffraction (XRD). The influences of SiC nanoparticles on Ni-W composite electrodeposition process and the electrochemical corrosion properties of Ni-W/SiC composite coatings were studied by EIS and Tafel methods. The results show that SiC which pretreated were uniformly dispersed in compact Ni-W/SiC coating which can effectively improve the hardness and wear resistance at the same time. The addition of W6+ refine the grain size of the Ni coating, reduce the porosity, transform some structure to amorphous and improve the corrosion resistance. SiC nano particles can promote the nucleation and growth of Ni-W alloy and improve the hardness of the alloys. Compared with Ni-W alloys, with the wear resistance increased and porosity decreased, Ni-W/SiC alloys have excellent corrosion resistance and wear resistance. Ni-W/SiC alloys also have better abrasion and corrosion resistance than Ni-W alloy, and can provide comprehensive service performance for marine parts under the influence of multifactor interaction in seawater environment. It has a good application prospect in the field of marine engineering protection.
作者单位E-mail
李保松 河海大学 力学与材料学院 江苏 南京 lbs79@126.com 
张文 河海大学 力学与材料学院 江苏 南京  
环宇星 河海大学 力学与材料学院 江苏 南京  
张薇薇 河海大学 机电工程学院 江苏 常州  
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