Yttria Stabilized Zirconia (YTZP)

Yttria Stabilized Zirconia (YTZP) is the strongest ceramic material we offer. YTZP is a fine-grained, completely tetragonal phase material. This material has the highest flexural strength among all Zirconia-based materials. YTZP has a property called transformation toughening, which helps it to resist fracture propagation. When applied stress is increased by the stress concentration at the tip of a fracture, the tetragonal phase can transform into the monoclinic, resulting in an expansion of volume. 

The crack may subsequently enter a compression state as a result of this phase transition, which will slow its propagation and increase the fracture toughness. Products manufactured using stabilized zirconia have far longer lifespan and more dependability thanks to this mechanism. Because of its exceptional strength and toughness, as well as its greater erosion resistance and significantly stronger resistance to chemicals, YTZP is a good substitute for metals.

ZTA Ceramic

The primary benefit of zirconia toughened alumina (ZTA) is that it is less expensive than zirconia (YTZP, MSZ, CSZ) and offers more strength and toughness than alumina. When combined with 10-20% zirconium oxide, alumina offers significantly greater strength, toughness, hardness, and wear resistance than alumina alone. The 20-30% improvement in strength usually satisfies the design criteria at a far lower cost than using zirconia.

A process called transformation toughening is the phenomenon that increases the fracture toughness of ZTA. The zirconia particles undergo a crystal structure transition from tetragonal to monoclinic when subjected to stress. This transformation causes a volume expansion, which can reduce the surrounding crack in the alumina matrix.

ZTA should be considered for any application that requires structural strength surpassing that of conventional alumina properties.

Applications of Zirconia Ceramic

High pressure equipment valve balls and seats; 

High density ball grinding media;

Rollers and guides for metal forming;

Thread and wire guides;

Metal extrusion dies;

Deep well down-hole valves and seats;

Powder compacting dies;

Pump seals and shaft bearings;

Pump piston and plunger;

Oxygen sensors;

High temperature induction furnace susceptors.