Metal powder having controlled particle size distribution for me

Details Metal powder having controlled particle size distribution for me Metal powder having controlled particle size distribution for me

1989-09-11

1990-12-11

Morris, Theodore

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

106404, B22F 100

Patent

active

049767771

ABSTRACT:
Disclosed is a graded metal powder for metallic pigment, comprising a metal powder wherein the metal powder has a mean particle size of from about 2.5 to about 15.0 .mu.m, the content of particles having a particle size of not greater than 1 .mu.m is not larger than about 0.5% by volume, and the metal powder has a particle size distribution such that not smaller than 97% by volume of the particles of the metal powder fall within the range between half the mean particle size of the metal powder and double the mean particle size of the metal powder. Also is disclosed a process for producing a graded metal powder by classifying metal particles dispersed in a mineral oil containing a nonionic-anionic surfactant.

REFERENCES:
patent: 4172720 (1979-10-01), Megelas
patent: 4235613 (1980-11-01), Aliotta et al.
patent: 4318747 (1982-03-01), Ishijima et al.
patent: 4595413 (1986-06-01), Hard et al.
patent: 4617056 (1986-10-01), Mosser
patent: 4655825 (1987-04-01), Hard et al.
patent: 4659613 (1987-04-01), Mosser et al.
patent: 4724172 (1988-02-01), Mosser et al.

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