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Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-02-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
ISO 13320 (Particle size analysis - Laser diffraction methods)
Deviations:
no
GLP compliance:
no
Type of method:
Laser scattering/diffraction
Type of distribution:
volumetric distribution
Percentile:
D10
Mean:
53.24 µm
St. dev.:
2.67
Remarks on result:
other: According to ISO 13320, the relative standard deviation for d50 is smaller than 3%; for d10 and d90 smaller than 5%. For powders below 10 µm these maximum values should be doubled.
Key result
Percentile:
D50
Mean:
72.56 µm
St. dev.:
2.18
Remarks on result:
other: According to ISO 13320, the relative standard deviation for d50 is smaller than 3%; for d10 and d90 smaller than 5%. For powders below 10 µm these maximum values should be doubled
Percentile:
D90
Mean:
102.72 µm
St. dev.:
5.16
Remarks on result:
other: According to ISO 13320, the relative standard deviation for d50 is smaller than 3%; for d10 and d90 smaller than 5%. For powders below 10 µm these maximum values should be doubled
Conclusions:
Mean diameters (distribution type: volume and number) of Ytterbium stabilized Zirconium and Hafnium Oxide applying Fraunhofer approximation:
D (v, 0.1) = 53.24 μm;
D (v, 0.5) = 72.56 μm;
D (v, 0.9) = 102.72 μm.
Executive summary:

The particle size distribution of the test item Ytterbium stabilized Zirconium and Hafnium Oxide was investigated according to ISO 13320:2009. The mean diameters (distribution type: volume) applying Fraunhofer approximation are:

D (v, 0.1) = 53.24 μm;

D (v, 0.5) = 72.56 μm;

D (v, 0.9) = 102.72 μm.

Description of key information

The particle size distribution of the test item Ytterbium stabilized Zirconium and Hafnium Oxide was investigated according to ISO 13320:2009. The mean diameters (distribution type: volume) applying Fraunhofer approximation are:

D (v, 0.1) = 53.24 μm;

D (v, 0.5) = 72.56 μm;

D (v, 0.9) = 102.72 μm.

Additional information