Title:
NICKEL POWDER AND NICKEL PASTE
Document Type and Number:
WIPO Patent Application WO/2018/163823
Kind Code:
A1
Abstract:
[Problem] To provide a nickel powder and a nickel paste that is satisfactory as an internal electrode material for an MLCC and that has excellent debinding properties and improved dispersibility and wetting properties in a low-polarity solvent, particularly dihydroterpenyl acetate. [Solution] A spherical nickel powder having a number-average diameter of 1 µm or less and a crystallite diameter d of more than 40 nm, the nickel powder characterized in that the ratio (Ib/Ia) of the absorbance Ia at 1385 cm-1 and the absorbance Ib at 1600 cm-1 measured by Fourier-transform infrared spectroscopy is 0.8 or greater, and the carbon concentration is 0.05% by mass to 2.0% by mass. Here, the crystallite diameter d is calculated using the Scherrer equation (equation 2) by X-ray diffraction measurement for the (111) face, where K is the Scherrer constant, λ is the measured X-ray wavelength, β is the half-value width, and θ is the diffraction angle.
Inventors:
HONDA YUDAI (JP)
ASAI TSUYOSHI (JP)
YOSHIDA MITSUGU (JP)
ASAI TSUYOSHI (JP)
YOSHIDA MITSUGU (JP)
Application Number:
PCT/JP2018/006227
Publication Date:
September 13, 2018
Filing Date:
February 21, 2018
Export Citation:
Assignee:
TOHO TITANIUM CO LTD (JP)
International Classes:
B22F1/12; B22F1/142; B22F1/16; C22C19/03; H01B1/00; H01B1/22; H01B5/00
Domestic Patent References:
| WO2015156080A1 | 2015-10-15 | |||
| WO2017056741A1 | 2017-04-06 |
Foreign References:
| JP2013159830A | 2013-08-19 | |||
| JP2005307229A | 2005-11-04 | |||
| JP2015151558A | 2015-08-24 |
Attorney, Agent or Firm:
SUENARI, Mikio (JP)
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