METHOD FOR MANUFACTURING NICKEL MICROPARTICLES

Title:

METHOD FOR MANUFACTURING NICKEL MICROPARTICLES

Document Type and Number:

WIPO Patent Application WO/2014/041706

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a method for manufacturing nickel microparticles in which the ratio of crystallite diameter to the particle diameter of the nickel microparticles is controlled. At least two types of process fluid are used, including a nickel compound fluid in which a nickel compound is dissolved in a solvent, and a reducing agent fluid in which a reducing agent is dissolved in a solvent. Sulfate ions are included in the nickel compound fluid, and a polyol is included in the nickel compound fluid and/or the reducing agent fluid. The process fluid is mixed in a fluid thin film formed between at least two processing surfaces (1, 2), at least one of which rotates relative to the other, and which are disposed facing each other and capable of approaching and separating from each other, and nickel microparticles are precipitated. The present invention is characterized in that at this time, the ratio (d/D) of crystallite diameter (d) to the particle diameter (D) of the nickel microparticles is controlled by controlling the pH of the nickel compound fluid introduced between the processing surfaces (1, 2) and the mole ratio of sulfate ions with respect to nickel in the nickel compound fluid.

Inventors:

MAEKAWA MASAKI (JP)
ENOMURA MASAKAZU (JP)

Application Number:

PCT/JP2012/075464

Publication Date:

March 20, 2014

Filing Date:

October 02, 2012

Export Citation:

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Assignee:

M TECH CO LTD (JP)

International Classes:

B22F9/24

Domestic Patent References:

WO2012124046A1	2012-09-20
WO2012014530A1	2012-02-02
WO2009008390A1	2009-01-15

Foreign References:

JP2009024254A	2009-02-05
JP2007197836A	2007-08-09
JP2011195888A	2011-10-06
JP2009024254A	2009-02-05

Other References: