Title:
METHOD FOR FINDING ASPECT RATIO OF POWER AND MEASURING DEVICE
Document Type and Number:
Japanese Patent JP3195090
Kind Code:
B2
Abstract:
PURPOSE: To easily and highly precisely calculate an aspect ratio with a function for regarding an average grain diameter and a specific surface area of powder as variables.
CONSTITUTION: An aspect ratio Y is found with a function formula for regarding previously prepared R and A as variables by means of really measurable values such as an average grain diameter and a specific surface area. Y=mRA+n, where m, n: constants. If the aspect ratio Y is expressed with a ratio R'/C of an average value R' of the longest sides (a) of powder to another average value C of the shortest sides thereof, Y=0.5R'A-4 is used as a function and the ratio Y is found. If the aspect ratio Y is expressed as another ratio R"/C of another value R" of diameters equivalent to an area of the powder to the average value C of the shortest sides thereof, Y=0.5R"A-2.75 is used as another function and can be calculated. Thereby the aspect ratio can be calculated with a computer and the like from the average grain diameter and the specific surface area measured with an average grain diameter measuring device and a specific surface area measuring device.
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Inventors:
Yutaro Ishida
Koh Homma
Seinosuke Ando
Koh Homma
Seinosuke Ando
Application Number:
JP35172992A
Publication Date:
August 06, 2001
Filing Date:
December 08, 1992
Export Citation:
Assignee:
Co-op Chemical Co., Ltd.
International Classes:
G01N15/00; G01N15/08; (IPC1-7): G01N15/00; G01N15/08
Domestic Patent References:
| JP5164678A |
Attorney, Agent or Firm:
Teruo Akimoto