C CHEMISTRY; METALLURGY
C04 CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
C04B LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
C04B2235/00 Aspects relating to ceramic starting mixtures or sintered ceramic products
C04B2235/70 Aspects relating to sintered or melt-casted ceramic products
C04B2235/80 Phases present in the sintered or melt-cast ceramic products other than the main phase