Yuan Jing? Yuan Rui,Feng Tao,Mao Duolu.Influence of metal salt concentration ratio in plating bath on the morphology and magnetic properties of electroless Ni-Co-P film[J].Plating & Finishing,2023,(2):7-13.[doi:10.3969/j.issn.1001-3849.2023.02.002]
镀液中金属离子浓度比对化学镀Ni-Co-P薄膜的形貌及 磁性能的影响
- Title:
- Influence of metal salt concentration ratio in plating bath on the morphology and magnetic properties of electroless Ni-Co-P film
- 关键词:
- 化学镀 Ni-Co-P 涂层; 形貌; 晶体结构; 软磁性能
- 分类号:
- TG132.2
- 文献标志码:
- A
- 摘要:
- 采用化学镀法在硅基底上直接施镀了 Ni-Co-P 磁性薄膜，通过调整镀液中金属盐浓度比控制镀层中镍、钴含量，优化薄膜软磁性能。采用 SEM 、 EDAX 、 XRD 和 VSM 研究了镀液中不同的镍、钴浓度比对薄膜形貌、成分、厚度、镀速、结构和磁性能的影响。结果表明：化学镀 Ni-Co-P 薄膜由瘤状 Ni-Co 颗粒组成，镀态的 Ni-Co-P 镀层由非晶相构成。随着镀液中 Co 2+ 浓度的增加，镀层中 Co 元素的含量增多， Ni 元素的含量降低， 但镀层的镀速减缓，当镀液中 Co 2+ 含量过高时，施镀非常困难，而镀液中金属盐浓度比对镀层中非金属元素 P 的沉积量影响不大。 Ni-Co-P 合金薄膜的饱和磁化强度随着镀层中 Co 元素含量的增加有上升趋势，矫顽力同时呈现下降趋势。 当镀液中 c （ Ni 2+ ）∶ c （ Co 2+ ） =2 ∶ 3 时，制备的 Ni-Co-P 镀层软磁性能最好，其饱和磁化强度达到 820 emu/cc ，矫顽力仅为 4 Oe 。
- Abstract:
- ： Ni-Co-P magnetic films were directly plated on the silicon substrate by the electroless plating method ， and the content of nickel and cobalt in the coatings was controlled by adjusting the metal salt concentration ratio in the plating solution to optimize the soft magnetic properties of the films. Effects of metal salt concentration ratio on the coating morphology ， composition ， thickness ， deposition rate ， structure and magnetic properties of the Ni-Co-P coatings were studied by scanning electron microsocopy （ SEM ）， energy dispersion analyzer of X-ray （ EDAX ）， X-ray diffractometer （ XRD ） and vibrating sample magnetometer （ VSM ） . The results show that Ni-Co-P coatings are in cellular structure and the coatings are composed of an amorphous phase. The content of Co element in the coating increases and the content of Ni element decreases ， but the deposition rate of the coating slows down as the concentration of Co 2+ in the plating solution increases. When the Co 2+ concentration is too high ， the plating becomes very difficult. But the metal salt concentration ratio in the solution has little effect on the deposition of element P in the coating. The saturation magnetization of the Ni-Co-P alloy film has an upward trend with the increase of the Co element content in the coating ， and the coercivity also shows a downward trend. The optimum concentration ratio in the solution is c （ Ni 2+ ）∶ c （ Co 2+ ） =2 ∶ 3 in the plating solution ， and the Ni-Co-P coating prepared under this condition has the best soft magnetic properties ， its saturation magnetization reaches 820 emu/cc ， and the coercivity is only 4 Oe.
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备注/Memo
收稿日期： 2021-04-12 修回日期： 2021-06-22 作者简介： 袁静（ 1985 —），女，博士，副教授， email ： yuanjing860519@163.com 基金项目： 青海省自然科学基金（ 2019-ZJ-943Q ）；中科院“西部青年学者”项目?/html>