Zirconia Ceramic

Overview of Zirconium Dioxide Ceramic

Zirconium Dioxide Ceramic, commonly known as Zirconia (ZrO₂), is an advanced engineering ceramic renowned for its exceptional combination of toughness, strength, and wear resistance. Often referred to as "ceramic steel," it undergoes a transformation toughening mechanism that inhibits crack propagation, setting it apart from other technical ceramics like Alumina. This unique property profile makes Zirconia the material of choice for the most demanding mechanical and thermal applications across a wide range of high-tech industries.

Features of Zirconium Dioxide Ceramic

Zirconia's superior performance is driven by a suite of outstanding material properties:

• Exceptional Fracture Toughness: Possesses the highest toughness of all advanced ceramic materials, providing remarkable resistance to chipping, cracking, and impact.
• High Mechanical Strength: Exhibits excellent flexural and compressive strength, often exceeding that of other ceramics, ensuring durability under heavy loads.
• Superior Wear & Abrasion Resistance: Ideal for components in frictional and abrasive environments, significantly outperforming metals and other ceramics.
• Low Thermal Conductivity: One of the best ceramic insulators, making it perfect for thermal barrier coatings and high-temperature insulation.
• Excellent Chemical Inertness: Highly resistant to corrosion from acids, alkalis, and molten metals, ensuring long-term stability in harsh environments.
• High Temperature Performance: Maintains structural integrity and mechanical properties at elevated temperatures.
• Biocompatibility: Certain grades are fully biocompatible (e.g., Y-TZP), making them the premier choice for dental and medical implants.

Applications of Zirconium Dioxide Ceramic

The versatile properties of Zirconia enable its use in a diverse array of critical applications:

• Industrial Engineering: Precision ball valve seats and balls, pump seals, wear plates, thread guides, and cutting tools.
• Medical & Dental: Hip and knee joint replacements, dental crowns and bridges, surgical scalpels, and orthodontic brackets.
• Automotive & Aerospace: Oxygen sensors, thermal barrier coatings for turbine blades, and engine components.
• Electronics & Consumer Goods: Wear-resistant components in smartphones, fiber optic connectors, and precision shafts.
• General Machinery: High-performance bearings, rollers, and liners where lubrication is difficult or impossible.

Specification Table of Zirconium Dioxide Ceramic

Property	Unit	Typical Value (Y-TZP)	Test Standard
Color	-	White / Ivory	-
Density	g/cm³	6.05	ASTM B311
Flexural Strength	MPa	≥ 1000	ISO 6872
Vickers Hardness	HV0.5	1250 - 1350	ASTM C1327
Fracture Toughness	MPa·m¹/²	6 - 10	SEP 1230
Young's Modulus	GPa	200 - 210	ASTM E494
Thermal Conductivity	W/m·K	2 - 3.3	ASTM E1461
Coefficient of Thermal Expansion	10⁻⁶/K	9.6 - 10.5	ASTM E228
Max. Use Temperature	°C	800 - 1000 (Long Term)	-

Company Profile

Tanki New Materials Co.Ltd. focus on the research and development, production and sales of ceramic products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2015, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Aerogel, Aluminum Nitride, Aluminum Oxide, Boron Carbide, Boron Nitride, Ceramic Crucible, Ceramic Fiber, Quartz Product, Refractory Material, Silicon Carbide, Silicon Nitride, ect. please feel free to contact us.

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Zirconium Dioxide Ceramic

1. What is the main advantage of Zirconia over Alumina?
The primary advantage is its vastly superior fracture toughness (3-4x higher). While Alumina is very hard, it is more brittle. Zirconia is the tougher material, making it ideal for applications involving impact, shock, or high stress concentrations.

2. Is Zirconia ceramic electrically conductive?
No, Zirconia Dioxide is an excellent electrical insulator, even at elevated temperatures. However, it can be made into a solid electrolyte for oxygen sensors at very high temperatures due to its ionic conductivity.

3. Can Zirconia components be machined to tight tolerances?
Yes. Zirconia is typically sintered to a "near-net-shape" and can then be precision ground and lapped using diamond tools to achieve extremely tight tolerances and superior surface finishes.

4. Is Zirconia safe for medical implants?
Absolutely. Yttria-Stabilized Tetragonal Zirconia Polycrystal (Y-TZP) is highly biocompatible, bioinert, and exhibits excellent osseointegration, making it a leading material for orthopedic and dental implants.

5. Why is Zirconia used for dental restorations?
Its high strength and toughness allow for durable, long-lasting crowns and bridges. Its natural, tooth-like color and translucency provide excellent aesthetics, and its biocompatibility ensures it is safe for use in the body.