Ceramic materials

Ceramic materials

The properties of ceramic components are decisively dependent on the quality of the starting powders: in addition to the particle size distribution and shape, the important parameters are the BET surface area and density.Further the type and performance of the molding process is essential: e.g. in the case of a wet process (suspension route), the slurry properties influence the properties of the green body in addition to the real process parameters. The essential quality features here are the stability of the suspension against sedimentation and agglomeration, whereby the zeta potential plays an important role in electrostatically or sterically stabilized systems. Moreover, the rheological properties are crucial for shaping of the bodies.Optimized properties of the green body, in particular a proper distribution and size of the pores for the sintering process and, of course, the shape stability, are absolutely required for an ideal ceramic end product!

Analysis methods for Ceramic materials

ANALYSIS METHODPARAMETERMEASURING INSTRUMENT
Laser diffraction (wet or dry)Particle size of powdersBettersizer S3 series
Bettersizer 2600
Bettersizer ST
Image analysisParticle shapeBeVision D2
Bettersizer S3 Plus
DLS – dynamic light scattering (Photon correlation)Particle size in nanometer rangesBeNano series
Acoustic spectrometryParticle size in micrometer and nanometer ranges in concentrated dispersionsDT-1202
DT-100
Electro acousticZeta potentialDT-1202
DT-310
DT-300
Multiple light scatteringStability of dispersionsContract analysis
Gas adsorptionBET-surface area and pore analysis3P micro series
3P meso series
3P sync series
3P surface DX
Mercury porosimetryPore analysis (pore volume, pore size distribution, raw density)Contract analysis
Dynamic vapor sorption – DVSWater uptake and -release3P graviSorb series
Gas pycnometriyDensity3P densi series
Tapping volumetryTap densityBeDensi T series
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