High Hardness Precision Dental Laboratory Zirconia Ceramic Blocks

Overview of Zirconia ceramic block

Zirconia ceramic blocks are advanced ceramic materials with zirconium dioxide as the main component. They have high melting and boiling points and high hardness and are close to natural diamonds but are lighter than metals. They are insulators at room temperature and conductive at high temperatures. Pure zirconia ceramics are usually white but may be yellow or gray when containing impurities.

Zirconia ceramic blocks have excellent properties such as high hardness, high toughness, wear resistance, corrosion resistance, high-temperature resistance, good chemical stability and thermal stability. Zirconia ceramic blocks are mainly made by adding different types of stabilizers, such as partially stabilized zirconia (PSZ) and tetragonal zirconia polycrystalline ceramics (TZP).

Zirconia ceramic blocks are widely used in many fields, including machinery, electronics, aerospace, biomedicine and chemical industry, such as manufacturing high-precision ceramic parts, electronic equipment insulation components, aerospace high-temperature components, dental restoration materials and chemical anti-corrosion components.

Features of Zirconia ceramic block

Zirconia ceramic blocks are an advanced ceramic material with zirconium dioxide as the main component, which has many excellent characteristics. Zirconia ceramic blocks have high strength, high toughness and high hardness, excellent bending strength and fracture toughness, and hardness second only to diamond. They can withstand large bending stress and impact force, are not easy to break, and have excellent wear resistance. They are suitable for manufacturing high-precision ceramic parts, electronic equipment insulation parts, aerospace high-temperature parts, dental restoration materials, and chemical anti-corrosion parts. The thermal expansion coefficient of zirconia ceramic blocks is close to that of steel, and when used in combination with metals, it can reduce the risk of failure caused by thermal stress.

In addition, zirconia ceramic blocks also have good chemical inertness, resistance to corrosion by a variety of chemicals, good thermal insulation, low thermal conductivity, and can effectively block heat transfer and are used in high-temperature thermal insulation applications. They are insulators at room temperature and conductive at high temperatures and can be used in specific high-temperature electronic devices. Zirconia ceramic blocks also have good biocompatibility and are non-toxic and harmless to human tissues.

Specifications table of Zirconia ceramic block

Property	Typical Value	Unit
Chemical Composition	ZrO₂ (≥95%)	wt%
Density	5.6 – 6.0	g/cm³
Hardness (Vickers)	1200 – 1300	HV
Flexural Strength	1000 – 1200	MPa
Fracture Toughness	8 – 10	MPa·m½
Young’s Modulus	200 – 220	GPa
Thermal Conductivity	2.5 – 3.0	W/(m·K)
Thermal Expansion Coefficient	10 – 12 x 10⁻⁶	/K
Dielectric Constant (1 MHz)	20 – 25	–
Insulation Resistance	>10¹⁴	Ω·cm
Corrosion Resistance	Excellent in most acids and alkalis	–
Operating Temperature	Up to 2000°C	°C
Color	White to off-white	–
Surface Finish	Smooth, can be polished	–

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Applications of Zirconia ceramic block

Zirconia ceramic blocks are widely used in many fields due to their excellent performance. In the mechanical field, it can be used to manufacture high-precision mechanical parts such as bearings, sealing rings, etc., which can withstand high loads and wear while maintaining good precision and stability.

In the electronic field, the insulation and thermal conductivity of zirconia ceramic blocks make them ideal insulating materials for electronic devices. They can be used to manufacture integrated circuit substrates, electronic packaging materials, etc., effectively protecting electronic components from external interference.

In the aerospace field, its high strength, high toughness and high-temperature resistance make it suitable for manufacturing engine parts, high-temperature sensors, etc., meeting the stringent requirements of aerospace materials.

In the biomedical field, the biocompatibility and wear resistance of zirconium oxide ceramic blocks make them an ideal choice for dental restoration materials and orthopedic implants, such as crowns, bridges, artificial joints, etc., which are well compatible with human tissues and have a long service life.

In addition, it is also used in the chemical industry as corrosion-resistant pipes, valve parts, etc., which can resist the erosion of chemical media such as strong acids and alkalis.

Company Profile

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years of experience in providing super high-quality chemicals and Nanomaterials. The company exports to many countries, such as the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are interested, please send an email to sales1@rboschco.com

Payment Term

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

Shipment Term

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

5 FAQs of Zirconia ceramic block

Q1:How to process zirconia ceramic blocks?

Zirconia ceramic blocks are difficult to process and usually require the use of special processing equipment and tools. Common processing methods include cutting, grinding and special processing. During cutting, due to its high hardness, hard tools such as diamond tools are required, and lower cutting speeds and feed rates are used; during grinding, ceramic or diamond grinding tools can be used for grinding and polishing to achieve the required dimensional accuracy and surface finish.

Q2:How to clean and maintain zirconia ceramic blocks?

When cleaning zirconia ceramic blocks, use warm water and mild soap, and avoid using strong acid or alkaline cleaners to avoid damaging the surface. In daily use, care should be taken to avoid severe impact and excessive wear to avoid damage; for some special zirconia ceramic products, such as dental restorations, maintenance and care are also required in accordance with the corresponding use requirements.

Q3:What is the hardness of zirconia ceramic blocks?

Zirconia ceramic blocks have a very high hardness, second only to diamonds. Their Mohs hardness is about 8.5-9, and their Vickers hardness is usually around 1200-1300 HV. They can withstand greater pressure and wear and are not easily scratched.

Q4:What is the chemical stability of zirconia ceramic blocks?

Zirconia ceramic blocks have strong chemical stability. They will not react with common chemicals such as acids, alkalis, and salts at room temperature. Even at high temperatures, they will only react with a few substances. Therefore, they can remain stable in chemically corrosive environments.

Q5:What is the zirconium oxide content of zirconia ceramic products?

This depends on the specific product and manufacturer. Generally, the zirconium oxide content of zirconia ceramic products with higher purity can reach 95% or more, but you need to check the product specifications or consult the manufacturer for details.