Title:
MANUFACTURING PROCESSES FOR GARNET PRECURSOR MICROPARTICLES AND MICROPARTICLES OF GARNET STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2013/111811
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing manufacturing processes for garnet precursor microparticles (a precursor for microparticles of garnet structure) and microparticles of garnet structure. One of the manufacturing processes comprises mixing ions of at least two elements with a basic substance in a thin-film fluid to precipitate microparticles that contain the at least two elements. The thin-film fluid is formed between at least two treating surfaces which are approachably and separably arranged facing each other with at least one of the treating surfaces rotating relative to the other. In the manufacturing process, the precipitated microparticles are garnet precursor microparticles, and the molar ratio between the at least two elements in the garnet precursor microparticles is regulated by controlling the pH of the thin-film fluid after the mixing. Microparticles of garnet structure can be obtained by subjecting the garnet precursor microparticles to heat treatment. Specifically, the yttrium/ aluminum molar ratio of yttrium-aluminum-garnet (YAG) precursor microparticles is regulated by controlling the pH of the thin-film fluid after the mixing, YAG being an example of the crystal of garnet structure.
Inventors:
KURAKI JUN (JP)
ENOMURA MASAKAZU (JP)
ENOMURA MASAKAZU (JP)
Application Number:
PCT/JP2013/051424
Publication Date:
August 01, 2013
Filing Date:
January 24, 2013
Export Citation:
Assignee:
M TECH CO LTD (JP)
International Classes:
C01F17/00; B01F3/08; B01F5/06; B01J19/00
Domestic Patent References:
| WO2009008392A1 | 2009-01-15 | |||
| WO2009008392A1 | 2009-01-15 |
Foreign References:
| JPH11130428A | 1999-05-18 | |||
| JP2003277051A | 2003-10-02 | |||
| JP2001270775A | 2001-10-02 | |||
| JPH02133386A | 1990-05-22 | |||
| JP2001270714A | 2001-10-02 | |||
| JPH0292817A | 1990-04-03 |
Other References:
See also references of EP 2808301A4
Attorney, Agent or Firm:
SAMEJIMA TAKENOBU (JP)
Takenobu Sameshima (JP)
Takenobu Sameshima (JP)
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Claims: