ZTA (Zirconia Toughened Alumina) ceramic rubber vulcanized plate is a composite wear-resistant product specifically engineered for extreme abrasion conditions. The product integrates ZTA ceramics (typically composed of 75%-80% Al₂O₃ and 20%-25% ZrO₂) with high-elasticity natural rubber and a steel backing plate through an advanced vulcanization process, featuring pre-embedded countersunk bolts for easy installation . The core design philosophy leverages the high wear resistance of ceramics to withstand material abrasion while the rubber layer absorbs impact energy, achieving a synergistic effect between wear resistance and impact toughness.
Due to the phase transformation toughening mechanism of zirconia, ZTA exhibits significantly higher fracture toughness and wear resistance than conventional alumina ceramics. Research indicates that ZTA composites containing 20%-25% zirconia demonstrate optimal performance under severe impact-abrasion conditions . Typical technical specifications include: bulk density ≥4.1-4.3 g/cm³, Rockwell hardness (HRA) ≥90, fracture toughness (KIC) ≥3.70 MPa·m1/2, and flexural strength >350 MPa . In dry sliding wear tests, the specific wear rate of ZTA composites can be as low as 10⁻⁹ mm³/(N·m), substantially outperforming single-phase alumina or zirconia ceramics.
The manufacturing process involves precisely controlled hot vulcanization to ensure high bond strength at the ceramic-rubber interface. According to industry standards, the shear bond strength between ceramic and rubber should exceed 3.5 MPa, with the rubber layer itself exhibiting tensile strength of 12-15 MPa and elongation at break greater than 250%-400% . The vulcanized composite structure effectively prevents ceramic tiles from detaching under impact, while the rubber deformation disperses concentrated stress, protecting the ceramic layer from brittle fracture. The steel backing plate ensures structural rigidity when mounted on equipment shells.
ZTA ceramic rubber vulcanized plates are primarily used in transfer chutes, hoppers, and bins of bulk material handling systems where both impact and abrasion are prevalent . Compared to pure alumina ceramic liners, ZTA offers over 2.5 times longer service life under impact-abrasion conditions, while its cost remains significantly lower than pure zirconia ceramics, providing exceptional cost-effectiveness . For applications handling large materials, high drop heights, or high flow velocities, ZTA rubber vulcanized plates represent one of the most reliable wear protection solutions available.
Post time: Feb-24-2026