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Zirconia Ceramics

Zirconia ceramics, composed primarily of zirconium dioxide (ZrO₂), are high-performance engineering materials distinguished by their unique transformation toughening mechanism, exceptional mechanical reliability, and resistance to thermal and chemical degradation. Unlike conventional ceramics, zirconia exhibits a stress-induced tetragonal-to-monoclinic phase transformation, effectively dissipating crack energy and significantly enhancing fracture toughness. This intrinsic structural adaptability, coupled with its low thermal conductivity and chemical inertness, enables zirconia to maintain stable performance in aggressive operational environments, including high-temperature, high-wear, and corrosive conditions. Its precision processability further allows integration into demanding applications such as advanced structural components, functional coatings, medical implants, and electrochemical systems, making it a strategic material in cutting-edge manufacturing and high-value industrial sectors.

Main Features

Here are the main features of zirconia ceramics:

Exceptional Mechanical Strength: Zirconia ceramics possess significantly higher flexural strength and fracture toughness than most traditional ceramics, ensuring reliable performance under heavy mechanical stress.
Transformation Toughening Mechanism: Their unique stress-induced phase transformation enhances crack resistance, preventing sudden failure and extending service life.
High Wear and Abrasion Resistance: The outstanding hardness of zirconia makes it ideal for components exposed to high friction and repetitive contact.
Chemical Inertness: Its resistance to corrosion, acids, alkalis, and aggressive media ensures long-term durability in chemically demanding applications.
Low Thermal Conductivity: This property provides efficient thermal insulation, enabling its use in thermal barrier systems and high-temperature structural parts.
Excellent Biocompatibility: Zirconia's non-toxic and stable nature allows its use in medical and dental applications without adverse biological reactions.

Product Specifications

We mainly offer three series of zirconia ceramics. The specific specifications of these ceramics are as follows:

Catalog Number	ALCM-ZC-01	ALCM-ZC-02	ALCM-ZC-03
Material	ZrO₂+ Y-PSZ	ZrO₂+ Mg-PSZ	ZrO₂+ Y-PSZ
Color	White	Yellow	Black
Density	6.04 g/cm³	5.7 g/cm³	6 g/cm³
Flexural Strength	800 MPa	700 MPa	1000 MPa
Compressive Strength	3000 MPa	2500 MPa	3000 MPa
Elastic Modulus	205 GPa	200 GPa	205 GPa
Impact Strength	8 MPa m^1/2	7 MPa m^1/2	10 MPa m^1/2
Weibull Modulus	15 m	18 m	18 m
Vickers Hardness	1100-1600 (HV 0.5)	1200 (HV 0.5)	1300 (HV 0.5)
Coefficient of Thermal Expansion	10 × 10^-6K^-1	10 × 10^-6K^-1	10 × 10^-6K^-1
Thermal Conductivity	<2 W/mK	<2 W/mK	<2 W/mK
Thermal Shock Resistance	270 △T°C	250 △T°C	270 △T°C
Maximum Operating Temperature	1000 °C	1700 °C	1000 °C
Volume Resistivity at 20 °C	>10¹⁰ Ω·cm	>10¹⁰ Ω·cm	>10¹⁰ Ω·cm

These properties are measured on test samples. Due to different manufacturing processes and product forms, the actual properties of ceramics may vary.

Typical Applications

Due to their remarkable performance characteristics, zirconia ceramics are used across a wide range of industries. In the medical field, zirconia is a preferred material for dental restorations, orthopedic implants, and surgical tools because of its strength and biocompatibility. In electronics, it is used in oxygen sensors, fuel cells, and insulating components thanks to its excellent ionic conductivity and stability. Aerospace and automotive industries use zirconia for thermal barrier coatings, wear-resistant components, and structural parts that must operate under extreme conditions.

Leveraging deep technical expertise and advanced manufacturing capabilities, Alfa Chemistry delivers high-quality zirconia ceramics designed to support high-performance applications across multiple industries. If you are seeking reliable products, we sincerely welcome you to contact us and explore how our materials can bring value to your application.

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