-2和超聲波頻率為40 kHz的條件下，能夠獲得平均晶粒尺寸為18.8 nm的銅鍍層。超聲輔助電沉積法還能促進燒結(jié)釹鐵硼基體盲孔內(nèi)的銅沉積，從而改善基體與鍍層之間的結(jié)合力。在同樣的鍍層厚度下，燒結(jié)釹鐵硼表面所沉積鍍層的耐腐蝕性隨超聲波頻率的提高而優(yōu)化。"/>

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無氰電鍍液中超聲電沉積耐腐蝕納米晶銅鍍層
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作者單位:

1.浙江工業(yè)大學 材料科學與工程學院 磁電材料研究所，浙江 杭州 310014;2.大地熊新材料股份有限公司 稀土永磁材料國家重點實驗室，安徽 合肥 231500;3.中科芯集成電路有限公司，江蘇 無錫 214072

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基金項目:

國家自然科學基金項目（51871201）；稀土永磁材料國家重點實驗室編號SKLREPM17OF06；浙江省科技廳重點研發(fā)項目（2021C01172）


Corrosion-Resistant Nanocrystalline Cu Coating by Ultra-sonic Electrodeposition in Cyanide-Free Electrolyte
Author:
Affiliation:

1.Research Center of Magnetic and Electronic Materials, College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China;2.State Key Laboratory of Rare Earth Permanent Magnet Materials, Earth-Panda Advance Magnetic Material Co., Ltd, Hefei 231500, China;3.China Key System & Integrated Circuit Co., Ltd, Wuxi 214072, China

Fund Project:

Sponsored by State Key Laboratory of Rare Earth Permanent Magnetic Materials (SKLREPM17OF06); National Natural Science Foundation of China (51871201); Key R&D Project of Zhejiang Provincial Department of Science and Technology (2021C01172)

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    摘要:

    通過超聲輔助電沉積法，在無氰絡(luò)合電鍍液中以高陰極電流密度在釹鐵硼磁體上電沉積獲得納米晶銅防護鍍層，研究了不同超聲波頻率下的鍍層形貌、晶粒尺寸、顯微硬度和耐腐蝕性能。結(jié)果表明，隨著超聲波頻率的增加，絡(luò)合電鍍液體系的銅電沉積有效陰極電流密度顯著增加，相應的陰極電流效率也提高，從而獲得致密的納米晶銅鍍層。在陰極電流密度為4.0 A·dm-2和超聲波頻率為40 kHz的條件下，能夠獲得平均晶粒尺寸為18.8 nm的銅鍍層。超聲輔助電沉積法還能促進燒結(jié)釹鐵硼基體盲孔內(nèi)的銅沉積，從而改善基體與鍍層之間的結(jié)合力。在同樣的鍍層厚度下，燒結(jié)釹鐵硼表面所沉積鍍層的耐腐蝕性隨超聲波頻率的提高而優(yōu)化。

    Abstract:

    The nanocrystalline Cu protective coating was obtained on the Nd-Fe-B magnet matrix in the cyanide-free electrolyte by the ultrasonic-assisted electrodeposition under high cathodic current density. The coating morphology, crystallite size, microhardness, and corrosion resistance of the Cu coatings were analyzed under different ultrasonic frequencies. Results show that with increasing the ultrasonic frequency, the effective cathodic current density of Cu electrodeposition in the complex electroplating solution system is increased remarkably, and the corresponding current efficiency is enhanced, thereby achieving the dense nanocrystalline Cu coating. Under the condition of the cathodic current density of 4.0 A·dm-2 and frequency of 40 kHz, the Cu coating with the crystallite of 18.8 nm in size can be obtained. The bonding strength between the Cu coating and sintered Nd-Fe-B matrix is improved via ultrasonic-assisted electrodeposition which promotes the electrodeposition in the blind holes of Nd-Fe-B matrix. The corrosion resistance of Cu-coated Nd-Fe-B materials with the same coating thickness is improved gradually with increasing the ultrasonic frequency.

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引用本文

鄭精武,陳意順,付永成,張栓,喬梁,蔡偉,唐誼平,衣曉飛,陳靜武,李旺昌,應耀,余靚,劉友好,黃秀蓮,車聲雷.無氰電鍍液中超聲電沉積耐腐蝕納米晶銅鍍層[J].稀有金屬材料與工程,2022,51(3):827~834.[Zheng Jingwu, Chen Yishun, Fu Yongcheng, Zhang Shuan, Qiao Liang, Cai Wei, Tang Yiping, Yi Xiaofei, Chen Jingwu, Li Wangchang, Ying Yao, Yu Jing, Liu Youhao, Huang Xiulian, Che Shenglei. Corrosion-Resistant Nanocrystalline Cu Coating by Ultra-sonic Electrodeposition in Cyanide-Free Electrolyte[J]. Rare Metal Materials and Engineering,2022,51(3):827~834.]
DOI：10.12442/j. issn.1002-185X.20210040

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  • 收稿日期:2021-01-14
  • 最后修改日期:2021-05-02
  • 錄用日期:2021-05-12
  • 在線發(fā)布日期: 2022-03-30
  • 出版日期: 2022-03-30