Yao Zhishen,Sun Jinmei*,Hu Lina,et al.Study on ultrasonic-assisted electrolytic phosphating technology[J].Plating & Finishing,2023,(12):56-63.[doi:doi : 10.3969/j.issn.1001-3849.2023.12.008]
超声辅助电解磷化工艺研究
- Title:
- Study on ultrasonic-assisted electrolytic phosphating technology
- Keywords:
- ultrasonic assisted electrolytic phosphating ; electrolytic phosphating ; process parameters ; corrosion resistance
- 分类号:
- TG174.4
- 文献标志码:
- A
- 摘要:
- 传统中高温磷化工艺能耗高、产生磷化渣多、采用的促进剂对环境危害较大;电解磷化工艺虽然成膜时间短、生产效率高,但是生成的磷化膜耐蚀性较差。因此,本文对传统磷化工艺、电解磷化工艺进行改进,开发了一种超声辅助电解磷化工艺,研究了超声波作用下工艺参数、主成膜组分浓度对磷化膜性能的影响,并借助微观形貌图和 X 射线衍射仪( XRD )对超声的促进作用进行了探究。研究结果表明:超声辅助电解磷化并未改变磷化膜物相组成,其主成分仍然为 Zn 3 ( PO 4 ) 2 ·4H 2 O ,但是生成的磷化膜相较于电解磷化晶粒尺寸更小,晶粒间排列更紧密,致密性更好。此外,超声辅助电解磷化适宜的工艺参数和主成膜组分浓度为:温度 35 ℃ ,电流 0.5 A ,超声功率 150 W ,氧化锌 30 g/L ,磷酸 128 g/L ,硝酸锌 110 g/L ,此时磷化膜厚度适中,耐腐蚀性更强。
- Abstract:
- : The traditional medium-high temperature phosphating process has high energy consumption , produces more phosphating slag , and the accelerator used is more harmful to the environment , although the electrolytic phosphating process has a short film-forming time and high production efficiency , the phosphating film produced has poor corrosion resistance. Therefore , this paper improved the traditional phosphating process and electrolytic phosphating process , and developed an ultrasonic-assisted electrolytic phosphating process. The effects of process parameters and the concentration of main film-forming components on the performance of phosphating film under the action of ultrasonic were studied , and the facilitation effect of ultrasound was explored with the help of microscopic topography and X-ray diffraction ( XRD ) . The research results show that ultrasonic-assisted electrolytic phosphating does not change the phase composition of the phosphating film , and its main component is still Zn 3 ( PO 4 ) 2 ·4H 2 O. However , compared with electrolytic phosphating , the phosphating film generated under ultrasonic irradiation has smaller grain size , tighter grain arrangement , and better compactness. In addition , the suitable process parameters and concentration of main film-forming components for ultrasonic-assisted electrolytic phosphating are : temperature 35 °C , current 0.5 A , ultrasonic power 150 W , zinc oxide 30 g/L , phosphoric acid 128 g/L , zinc nitrate 110 g/L. Under these conditions , the thickness of the phosphating film is moderate , the corrosion resistance is stronger.
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相似文献/References:
[1]姚知深,牛宗伟*,刘 斌,等.超声振动对65钢电解磷化膜表面形貌与耐蚀性的影响[J].电镀与精饰,2019,(9):24.[doi:10.3969/j.issn.1001-3849.2019.09.005]
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备注/Memo
收稿日期: 2023-03-15 修回日期: 2023-06-19 作者简介: 姚知深( 1992 —),男,硕士,讲师,主要研究方向:金属表面腐蚀与防护, email : zhishen.yao@qdc.edu.cn * 通信作者: 孙晋美( 1979 —),女,博士,教授,主要研究方向:增材制造, 3D 打印等, email : jinmei.sun@qdc.edu.cn 基金项目: 山东省高等学校优秀青年创新团队项目( 2019KJB013 )