Preparation of Ni–MgO core-shell nano powders

GUO Shun; ZHENG Jinfeng; LI Junyi; CHENG Yuewei; LIANG Hongyuan

doi:10.19591/j.cnki.cn11-1974/tf.2021020005

Volume 42 Issue 2

Apr. 2024

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GUO Shun, ZHENG Jinfeng, LI Junyi, CHENG Yuewei, LIANG Hongyuan. Preparation of Ni–MgO core-shell nano powders[J]. Powder Metallurgy Technology, 2024, 42(2): 159-164. doi: 10.19591/j.cnki.cn11-1974/tf.2021020005

Citation:

GUO Shun, ZHENG Jinfeng, LI Junyi, CHENG Yuewei, LIANG Hongyuan. Preparation of Ni–MgO core-shell nano powders[J]. Powder Metallurgy Technology, 2024, 42(2): 159-164. doi: 10.19591/j.cnki.cn11-1974/tf.2021020005

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Preparation of Ni–MgO core-shell nano powders

doi: 10.19591/j.cnki.cn11-1974/tf.2021020005

1.
National Engineering Research Center for Special Metal Materials of Tantalum and Niobium, Ningxia Orient Tantalum Industry CO., Ltd.,Shizuishan 753000, China
2.
Northwest Rare Metal Materials Research Institute, State Key Laboratory for Special Rare Metal Materials, Shizuishan 753000, China

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Corresponding author: E-mail: gshun2006@163.com
Received Date: 2021-10-19
Publish Date: 2024-04-28

Abstract

Abstract

Nickel nanopowders coated by magnesium oxide used for inner electrode of multilayer ceramic capacitor (MLCC) were prepared by coating thermal decomposition sintering method. The effects of reactant concentration and dispersant content on the particle size and homogeneity of the nano-coated nickel salt precursors were investigated, and the influences of reduction sintering temperature on the sphericity and dispersion of the coated nano-nickel powders were discussed. The nickel nanopowders coated by MgO were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermomechanical analyzer (TMA). The results show that the nano-nickel salt particles can be obtained when the reactant concentration reaches enough to cause the reaction explosion nucleation. The well-dispersed nano-nickel salt precursor particles can be obtained by adding the proper dosage of dispersant. The nickel nanopowders coated by MgO with good sphericity and dispersion can be obtained at the reduced sintering temperature of 700 ℃. The core-shell structure of the nickel nanopowders coated by MgO is formed, which show the good shrinkage delay effect.
- multilayer ceramic capacitor,
- precursor,
- nano-nickel powders,
- MgO,
- core-shell structure,
- thermal decomposition

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References(16)

References

[1]	叶凯, 梁风, 姚耀春, 等. 纳米镍粉的制备与应用的发展趋势. 化工进展, 2019, 38(5): 2252 Ye K, Liang F, Yao Y C, et al. Development trend of preparation and application of nickel nano-powder. Chem Ind Eng Prog, 2019, 38(5): 2252
[2]	黄昌蓉, 唐浩, 宋子峰, 等. MLCC在5G领域的应用及发展趋势. 电子元器件与材料, 2018, 37(9): 1 Huang C R, Tang H, Song Z F, et al. Development tendency and applications of MLCCs in 5G field. Electron Compon Mater, 2018, 37(9): 1
[3]	Zhang Y C, Wang X H, Kim J Y, et al. High performance BaTiO₃-based BME-MLCC nanopowder prepared by aqueous chemical coating method. J Am Ceram Soc, 2012, 95(5): 1628 doi: 10.1111/j.1551-2916.2011.05038.x
[4]	Kishi H, Mizuno Y, Chazono H. Base-metal electrode-multilayer ceramic capacitors: past, present and future perspectives. Jpn J Appl Phys, 2003, 42(1R): 1
[5]	李新春, 成会朝, 范景莲. 纳米镍粉制备技术研究进展. 粉末冶金技术, 2009, 27(2): 142 Li X C, Cheng H C, Fan J L. Research progress in preparation of nickel nanopowder. Powder Metall Technol, 2009, 27(2): 142
[6]	郝晓光. 多层陶瓷电容器用镍内电极浆料的现状与展望. 电子元件与材料, 2017, 36(2): 1 Hao X G. Current situation and development prospect of nickel inner electrode paste used in MLCC. Electron Compon Mater, 2017, 36(2): 1
[7]	卓金丽, 安可荣, 陆亨. 01005型M LCC关键制备工艺研究. 电子工艺技术, 2018, 39(1): 46 Zhuo J L, An K R, Lu H. Study on key processes of 01005-format MLCCs. Electron Process Technol, 2018, 39(1): 46
[8]	Cheng Q J, Huang L D, Xu H, et al. The influence of particle size of slurry on life on BME-MLCC. Int J Appl Ceram Technol, 2019, 16(4): 1632 doi: 10.1111/ijac.13212
[9]	司佳佳, 苏晓磊. 超细球形镍粉的制备. 粉末冶金技术, 2021, 39(2): 177 Si J J, Su X L. Preparation of ultrafine spherical nickel powders. Powder Metall Technol, 2021, 39(2): 177
[10]	Kim H T, Adair J H, Lanagan M T. Thermo-mechanical behavior of BME capacitors during binder burnout. Am Ceram Soc Bull, 2001, 80(10): 34
[11]	程淇俊, 易凤举, 徐豪, 等. 镍电极多层瓷介电容器烧结工艺的研究. 电子元件与材料, 2019, 38(3): 71 Cheng Q J, Yi F J, Xu H, et al. Study on sintering process of BME-MLCC. Electron Compon Mater, 2019, 38(3): 71
[12]	刘波, 郝俊杰. 钛酸钡包覆镍粉的制备与性能表征. 粉末冶金工业, 2009, 19(4): 1 Liu B, Hao J J. Preparation and measure properties of BaTi0₃-coated Ni particles. Powder Metall Ind, 2009, 19(4): 1
[13]	李晓波, 周康根, 陈一恒. CaZrO₃包覆Ni超细复合粉体的制备及其抗氧化性研究. 材料科学与工程学报, 2006, 24(6): 900 Li X B, Zhou K G, Cheng Y H. Preparation and oxidation resistance behavior of CaZrO₃-coated superfine nickel powder. J Mater Sci Eng, 2006, 24(6): 900
[14]	钟翔, 哈敏, 董宁利, 等. 包覆-热分解碳酸银前驱体制备球形银粉的研究. 粉末冶金技术, 2018, 36(6): 438 Zhong X, Ha M, Dong N L, et al. Study on spherical silver powders prepared by silver carbonate precursor modified by cladding-thermal decomposition. Powder Metall Technol, 2018, 36(6): 438
[15]	童长钿, 李启厚, 赖复兴, 等. 超细草酸镍粒子的制备及其形状和粒度控制. 湿法冶金, 2003(1): 22 Tong C D, Li Q H, Lai F X, et al. Preparation of ultrafine nickle oxalate and control of the particle shape and size. Hydrometall China, 2003(1): 22
[16]	邓丽云, 薛赵茹. 小尺寸高容量MLCC寿命性能改善. 电子工艺技术, 2019, 40(3): 175 Deng L Y, Xue Z R. Improvement of life performance of small size and high capacitance MLCC. Electron Process Technol, 2019, 40(3): 175