Method of analyzing particle size distribution of particles in metal material
US8384897B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2009 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | Mar 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4704
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method according to the present invention has: isolating, by extraction, particles contained in a metal material to be analyzed in a solution using a particle isolator; dispersing the particles isolated by extraction into a solvent to prepare a dispersion, and fractionating the dispersion into a plurality of particle dispersions based on particle sizes, using a field flow fractionator; and irradiating laser light on each of the particle dispersions separated based on predetermined particle sizes, to thereby measure absolute values of the particle size based on angular dependence of reflection intensity, and also to thereby measure the number density based on magnitude of reflection intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.