Helium pycnometry

nd optimisation of simulants 4.1 Occurrence of metallic components 4.2 Component characterisation 4.2.1 Mineralogy 4.2.2 Bulk chemistry 4.3 Particle density characterisation 4.4 Reflectance spectra...

t was used as the raw material in this work [ 44, 45 ]. The partial size ranges from 20 to 125 m, with a median size of ~75 m. The average particle density is 2.94 g/cm 3. The chemical compositio...

ed. Abrasivity is reported as weight loss in milligrams (mg) and categorized as low (7. 0 mg), medium (7.1 21.9 mg), or high (22 mg). 2.5 Particle density The density of solid particles (s) was...

ana- logue Lunar regolith Regolit ksi ycowy Bulk density G sto obj to ciowa q o 1. 21 g/cm 3 1.29 g/cm 3 1.50 1.66 g/cm 3 1.40 2.20 g/cm 3 Particle density G sto szkieletu ziarnowego q s 2.67 g/cm...

e density of the pressed tablets after sintering measured by the Archimedes method. The theoretical (true) material density was measured by helium pycnometry. For the as-received simulant, the mate...

at 250 C effectively prevented the formation of internal cracks. The homogeneity of the blocks was confirmed by coring and measurements of true density, bulk density, porosity, and unconfined compr...

ess n k N/m 1.0e 8 Particle size 2 mm 1~1. 5 Tangential stiffness s k N/m 0.85 e 8 Friction coefficient f 0.25 Normal strength n N/m 1.0e5 Particle density kg/m 3 1640 Tangential strength s N/m 1....

the following eight most important factors emerged (in decreasing order of weighted importance): particle size, particle size distribution, particle density, glass composition, bulk density, minera...