Liu Wenyan*,Wei Yuan,Yu Zhengpeng,et al.Effect of ultrasonic power on properties of electrodeposited Co-Mo-P coatings[J].Plating & Finishing,2023,(12):25-32.[doi:doi : 10.3969/j.issn.1001-3849.2023.12.004]
超声波功率对电沉积Co-Mo-P镀层性能的影响
- Title:
- Effect of ultrasonic power on properties of electrodeposited Co-Mo-P coatings
- Keywords:
- Co-Mo-P coating ; ultrasonic power ; hardness ; wear resistance ; corrosion resistance ; magnetic properties
- 分类号:
- TQ153
- 文献标志码:
- A
- 摘要:
- 采用超声波辅助电沉积工艺在 20# 钢基体上制备 Co-Mo-P 镀层,并研究超声波功率对 Co-Mo-P 镀层的形貌、成分、厚度、硬度、耐磨性能、耐腐蚀性能和磁性能的影响规律。结果表明:不同超声波功率下电沉积的 Co-Mo-P 镀层致密性和厚度存在差异,导致硬度、耐磨性能、耐腐蚀性能和磁性能差别较大。超声波功率为 150 W 时电沉积的 Co-Mo-P 镀层成分较均匀,孔洞缺陷少且晶粒结合更紧密,其厚度、硬度、电荷转移电阻、最大相位角、矫顽力和饱和磁化强度分别达到 11.4 μ m 、 460.5 HV 、 3623.2 Ω ·cm 2 、 68.2 ° 、 769.3 Oe 、 92.7 A·m 2 /kg ,摩擦系数仅为 0.52 ,相比于常规 Co-Mo-P 镀层表现出高硬度、优良的耐磨性能、耐腐蚀性能以及磁性能。由于在一定范围内提高超声波功率起到较好的强化扩散传质效果,细化晶粒并促使晶粒结合更紧密, Co-Mo-P 镀层的厚度增加,致密性逐步改善,因此其性能提高。
- Abstract:
- : Co-Mo-P coatings were prepared on 20# steel substrate by ultrasonic-assisted electrodeposition technology , and the influence of ultrasonic power on the morphology , composition , thickness , hardness , wear resistance , corrosion resistance and magnetic properties of Co-Mo-P coating was investigated. The results show that there are differences in the compactness and thickness of Co-Mo-P coatings electrodeposited under different ultrasonic power , resulting in obvious differences in the hardness , wear resistance , corrosion resistance and magnetic properties. When the ultrasonic power is 150 W , the Co-Mo-P coating has uniform composition and fewer hole defects , and the grains are tightly bonded. The thickness , hardness , charge-transfer resistance , maximum phase angle , coercivity and saturation magnetization of the Co-Mo-P coating electrodeposited under ultrasonic power of 150 W reach 11.4 μ m , 460.5 HV , 3623.2 Ω ·cm 2 , 68.2 ° , 769.3 Oe , 92.7 A·m 2 /kg , respectively , and the friction coefficient is only 0.52. Compared with conventional Co-Mo-P coating , the Co-Mo-P coating electrodeposited under ultrasonic power of 150 W exhibits high hardness , excellent wear resistance , corrosion resistance and magnetic properties. The increase of ultrasonic power in a certain range plays a better effect of enhancing diffusion mass transfer , refining the grains and promoting the grains bonding more closely , the thickness of Co-Mo-P coating increases and the compactness gradually improve , so its performance is improved.
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备注/Memo
收稿日期: 2023-01-10 修回日期: 2023-02-17 * 通信作者: 刘文彦( 1981 —),男,副教授,主要研究方向为应用化学、功能薄膜等, email : wenyan_liu000@163.com 基金项目: 湖北省教育厅基金项目( 2019JB323?/html>