Global Elements Solutions
Global Elements Solutions
Zirconia (ZrO₂) is a high-performance ceramic renowned for its strength, toughness, and resistance to extreme conditions. In its natural monoclinic form, zirconia offers excellent mechanical stability, low thermal conductivity, and high-temperature resilience, making it indispensable in demanding applications. Engineered composites such as Yttria-Stabilized Zirconia (YSZ) and Zirconia Toughened Alumina (ZTA) further enhance thermal stability and fracture toughness, extending zirconia’s performance in harsh environments.
With its unique ability to resist crack propagation, corrosion, and thermal shock, zirconia is especially valuable for joining ceramics with metals like steel, ensuring long-term durability. Its applications span aerospace, energy, electronics, and medical technology, from turbine and fuel cell components to dental implants and wear-resistant parts. Combining structural integrity with adaptability, zirconia ceramics remain a cornerstone material in modern engineering and advanced manufacturing.
At GESmaterials, we supply Zirconia (ZrO₂) ceramics, a high-performance material known for its exceptional strength, toughness, wear resistance, and thermal stability. These properties make zirconia a versatile ceramic widely used across industrial, medical, and energy applications.
Industrial Components: Zirconia ceramics are employed in cutting tools, bearings, and valves, offering excellent durability and reliability under heavy load and high-temperature conditions.
Dental Applications: Thanks to its biocompatibility and natural tooth-like appearance, zirconia is widely used for dental crowns and implants, combining strength with superior aesthetics.
Oxygen Sensors & Fuel Cells: Stabilized zirconia is a key material in oxygen sensors and solid oxide fuel cell (SOFC) membranes. Its high ionic conductivity ensures efficient oxygen ion transport for accurate sensing and energy conversion.
Electrochromic Devices: Zirconia serves as a solid electrolyte in smart windows and electrochromic displays, supporting energy-saving technologies in architecture and automotive design.
Protective Coatings for Pigments: Applied as a coating for titanium dioxide particles, zirconia enhances pigment durability, stability, and brightness in paints, plastics, and coatings.
Refractory Applications: With excellent resistance to heat and thermal shock, zirconia is used in furnaces, kilns, and reactor linings. Its hardness also makes it suitable for abrasives, enamels, and polishing products.
Zirconia ceramics are renowned not only for their mechanical strength and durability but also for their unique ability to undergo phase transitions across varying temperature ranges. These transitions occur between the monoclinic, tetragonal, and cubic crystal structures, each imparting distinct characteristics that influence the material’s performance.
At room temperature, zirconia typically exists in the monoclinic phase, which is stable but transforms into the tetragonal phase when heated above approximately 1,170 °C. The tetragonal phase is particularly significant because its stress-induced transformation toughening mechanism enhances fracture resistance, making it a cornerstone in structural ceramics.
At even higher temperatures, zirconia shifts into the cubic phase, which provides outstanding thermal and chemical stability along with high ionic conductivity—properties that are vital for applications in oxygen sensors and solid oxide fuel cells.
By tailoring dopants such as yttria or magnesia to stabilize these phases, zirconia can be engineered for specific functions, from tough structural components to advanced electrochemical devices, underscoring its remarkable versatility in both industrial and scientific applications.
| Chemical Formula | ZrO2 |
|---|---|
| Mechanical | |
| Density | 6 g/cm3 |
| Hardness | 13 GPa |
| Modulus of Elasticity | 220 GPa |
| Flexural Strength | 1000 MPa |
| Compressive Strength | 5690 MPa |
| Poisson’s Ratio | 0.31 |
| Fracture Toughness | 4 MPa m½ |
| Electrical | |
| Dielectric Strength | 11 ac V/mm |
| Dielectric Constant | 33 (@ 1 MHz) |
| Volume Resistivity | 10^13 ohm-cm |
| Thermal | |
| Coefficient of Thermal Expansion | 9.5 x 10^-6/°C |
| Thermal Conductivity | 3 W/(m*K) |
| Specific Heat | 0.46 x10^3 J/(Kg*K) |
| Shock Resistance | 300 °C Diff. |
| Maximum Working Temperature | 1000 °C |
We are dedicated to supplying high-quality, stable products, including refractory metals, deposition materials (sputtering target & evaporation materials), rare earth elements, permanent magnets, and advanced ceramic products.
E-mail：sales@gesmaterials.com
560 17th St, Oakland, CA 94612, USA
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