采用脉冲电沉积制得Ni-TiN微铸件，利用扫描电镜（SEM）、能谱仪（EDS）、纳米压痕仪（NI）对其进行弹性模量和表面形貌分析，研究脉冲电参数对Ni-TiN微铸件弹性模量和表面形貌的影响规律。结果表明：当脉冲电流占空比为30%，电流密度为5.5 A/dm2、Ni-TiN微铸件的弹性模量达最大值，分别为228.5 GPa和231.8 GPa；Ni-TiN微铸件弹性模量随镀液温度的升高先增大后略微降低；Ni-TiN微铸件的表面平整度较好，表面镍元素和TiN粒子的质量分数分别为53.31%和17.62%，其厚约为88.49μm。
Ni?TiN electroformings were deposited by pulse electrodeposition method. In order to investigate the effect of pulse electric parameters on the elastic modulus and surface morphology of the electroformings,the elastic modulus and surface morphology were analyzed by scanning electron microscope(SEM),energy disperse spectroscopy(EDS)and nano indenter (NI). The results show that when the current density is 5.5 A/dm2,and the elastic modulus of the electroforming reaches the maximum value 228.5 GPa. When pulse duty ratio is 30%,the elastic modulus reaches a maximum value of 231.8 GPa. The modulus increases with the increase of the bath temperature,and then decreases slightly. The surface of Ni?TiN electroforming is better,and the mass fraction of nickel element content and TiN particles are 53.31% and 17.62%,respectively,and the thickness is about 88.49μm.
参考文献
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