Ceramic precision sphere Saint Gobain Ceramics
Cerbec: Si3N4

CERAMICS Ceramics predominantly are bonded by very directional bonds between neighboring atoms in expansive lattice structures (as compared to the chains of polymers). Because every atom in a ceramic directionally shares its electrons within its lattice neighborhood through ionic and/or covalent type bonding, ceramics tend not to be tightly packed like metals. Due to strong directional bonding and non-close packed lattices, ceramics tend to have high stiffness, low electrical conductivity, low density, high hardness, low thermal expansion, high melting or dissociation temperatures, electrical resistance, high strength and corrosion resistance. In essence, ceramics tend to be very “non-reactive” or “inert” because their atoms are essentially electrically neutral through strong directional bonds within a very fixed lattice neighborhood – they have no need to “react” with the outside world looking for electrons to satisfy neutrality.

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