刘演龙.纳米SiC对高频脉冲电沉积Ni镀层性能的影响[J].表面技术,2016,45(12):91-96.
LIU Yan-long.Effect of Nano-particle SiC on the Properties of Ni Coating Fabricated by High Frequency Pulse Electrodeposition[J].Surface Technology,2016,45(12):91-96 |
| 纳米SiC对高频脉冲电沉积Ni镀层性能的影响 |
| Effect of Nano-particle SiC on the Properties of Ni Coating Fabricated by High Frequency Pulse Electrodeposition |
| 投稿时间：2016-05-29 修订日期：2016-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.12.015 |
| 中文关键词: 纳米SiC颗粒 镍基复合镀层 梯度镀层 结合强度 摩擦系数 显微硬度 弹性模量 |
| 英文关键词:nano-particle SiC Ni based composite coating gradient coating bond strength friction coefficient microhardness elastic ration |
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| 中文摘要: |
| 目的 研究纳米SiC颗粒对Ni镀层的摩擦性能、显微硬度等的影响。方法 采用高频脉冲电沉积技术制备了Ni/纳米SiC复合镀层，通过调整占空比实现了纳米SiC颗粒呈梯度分布。采用拉伸法测量了镀层的结合强度。通过摩擦磨损试验研究了Ni/纳米SiC复合镀层的摩擦系数和耐磨性能。采用纳米压痕测量了梯度镀层截面显微硬度和弹性模量的分布。结果 纳米SiC颗粒呈梯度分布的镀层的结合强度超过40 MPa，而非梯度的仅为19 MPa。含质量分数为1.5%纳米SiC颗粒的镀层的摩擦系数约为0.26，而纯镍镀层的约为0.40，且含纳米SiC颗粒的镀层的磨痕宽度小且浅。纳米SiC颗粒呈梯度分布的复合镀层的表层显微硬度为6.0 GPa，弹性模量为250 GPa，而靠近界面处的显微硬度为1.9 GPa，弹性模量为160 GPa。结论 纳米SiC颗粒呈梯度分布的镍镀层的结合强度明显高于非梯度镀层的。随纳米SiC颗粒含量的增加，镍镀层的耐磨性能增加，摩擦系数降低，且纳米压痕显微硬度和弹性模量也相应的增加。 |
| 英文摘要: |
| Effect of nano-particle SiC on the frictional behavior，and microhardness etc of Ni coatings were researched. Ni/nano-SiC composite coatings were prepared by high frequency pulse electrodeposition, and the NiS/nano-SiC gradient composite coatings were obtained by changing duty cycles; The bond strength of Ni/nano-SiC composite coatings was measured by tensile test; The friction coefficient and wear-resisting property were investigated by friction and wear test; The distributing of microhardness and E in cross-section of Ni/nano-SiC gradient composite coatings were estimated by nanoindentaion. The bond strength of Ni/nano-SiC gradient composite coatings is beyond 40 MPa, and that of Ni/nano-SiC composite coatings is only 19 MPa. The friction coefficient of Ni/nano-SiC composite coatings with 1.5wt.% SiC is about 0.26, and that of purity Ni coatings is about 0.40. Moreover, the grinding crack width and depth of the Ni/nano-SiC composite coating are smaller than that of purity Ni coatings. The mircohardness and E in the superficial layer of Ni/nano-SiC gradient composite coatings are 6.0 GPa and 250 GPa separately，and that near interface are 1.9 GPa and 160 GPa. The bond strength of Ni/nano-SiC gradient composite coatings is obviously higher than that of non-gradient coating, the wear-resistant property enhances and the friction coefficient decreases with the increasing of nano-particle SiC content，and the nanoindentaion microhardness and E augment correspondingly. |
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