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Preparation and Characterization of UltraFine Spherical Nickel Powder(PDF)

MATERIALS CHINA[ISSN:1674-3962/CN:61-1473/TG]

Issue:
2016年第10期
Page:
21-25
Research Field:
国内外动态
Publishing date:

Info

Title:
Preparation and Characterization of UltraFine Spherical Nickel Powder
Author(s):
ZHONG jingming12GUO Shun2 Zhang Xueqing2 Shi Wenfeng1 Li Junyi1
(1CNMC Ningxia Orient Group Co., Ltd., Shizuishan 753000, China)
(2National Engineering Research Center of Tantalum and Niobium Special Metal Materials, Shizuishan 753000, China)
Keywords:
-
CLC:

PACS:
-
DOI:
10.7502/j.issn.1674-3962.2016.10.05
DocumentCode:

Abstract:
Ultrafine spherical nickel powders used for multilayer ceramic capacitor (MLCC) inner electrodes were prepared by coating and thermal decomposition with the nickel oxalate as precursor, zinc oxalate as coating agent, and in the high temperature calcinations. The influence of sintering temperature on crystalline properties of nickel powders was mainly studied. The obtained powder samples were characterized by means of Xray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), laser particle size distribution instrument, thermogravimetric(TG), and Xray photoelectron spectroscopy(XPS). The results indicated that the initial crystalline grain size of nickel powder increased with the rising of sintering temperature. The high purity spherical nickel particles had the facecentered cubic(fcc) crystal structure, excellent crystallinity,high oxidation temperature and their final diameters were between 200 and 500 nm with narrow size distribution.

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Last Update: 2016-10-28