Zirconia Ceramic Components

Zirconia Ceramic Components

(ZrO2)

Zirconia ceramics is the strongest and toughest material among advanced ceramics.

Zirconia (ZrO2) has a monoclinic crystal structure at room temperatures, but transforms
to cubic and tetragonal structures at elevated temperatures. This transition can result in
the development of stresses during cooling which negatively impact the strength of the material.

Type of Zirconia Ceramics:

1. Properties of Yttria Stabilized Zirconia ceramics: The working temperature is up to 2100 ℃; high density, low thermal conductivity; chemically inert; anti-metal melting; ion conductivity; wear resistance, high hardness, high fracture toughness;

2. Properties of Cerium Stabilized Zirconia ceramics: The working temperature is up to 2100 ℃; high density, low thermal conductivity; chemically inert; resistance to metal melting; wear resistance, high hardness, high fracture toughness;

3. Properties of Magnesium Stabilized Zirconia ceramics: The working temperature is up to 2400 ℃; high density, low thermal conductivity; chemically inert; resistance to metal melting; wear resistance, high hardness, high fracture toughness.

Typical Physical Properties of Zirconia Ceramics:

1.High hardness, high toughness, high bending strength, zirconia ceramic density is 5.95-6.05g/cm3, zirconia ceramic toughness is 8MPa · m1/2 or more higher;

2.High wear resistance, low friction coefficient, wear resistance is 15 times that of alumina ceramics, friction coefficient is only 1/2 of that of alumina ceramics, after grinding(polishing) processing, the surface finish is better, up to ▽9, mirror surface, extremely smooth, with a lower coefficient of friction;

3.Good insulation, corrosion resistance, no static electricity, high temperature resistance, excellent thermal insulation, thermal expansion coefficient is close to that of steel;

4. Zirconia ceramics have self-lubrication, can solve the pollution caused by the lubricating medium and inconvenience caused by feeding.

Zirconia Ceramic performance parameters:

Chemical composition: ZRO2≥94.5%
Density: 6g/cm3
Sintering temperature: 1550~2600°C
Breakdown voltage strength: 15 kV/mm
Water absorption: <0.01%
Compressive strength: 5000 MPa
Hardness: ≥88(Hra)
Volume resistance: >1012 cm
Bending strength: 1100 MPa
Thermal expansion coefficient: 6.9~10 x10^(-6)/k
Thermal conductivity: 2.5 W/m-k
Heat resistance: 1800 °C

Typical Zirconia Ceramic Products:

Zirconia ceramics are mainly used in high-power devices, IC MOS tubes, IGBT chip-type thermal insulation, high-frequency power, communications, mechanical equipment, high current, high voltage, high temperature and other parts that require thermal conductivity and thermal insulation.

Pump components
Cutting tools
Valves (Spool)
Bearings
Filters

Zirconia ceramic rings

ceramic ring, advanced ceramic parts, precision ceramics, ceramic components

Zirconia ceramic axle sleeve

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Zirconia ceramic ferrule

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Zirconia ceramic axle sleeve

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Zirconia ceramic tube

ceramic tube, advanced ceramic parts, precision ceramics, ceramic components

Zirconia ceramic rods (Plunger)

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Zirconia ceramic axle sleeve

zirconia sleeve, advanced ceramic parts, precision ceramics, ceramic components

Ceramic-metal component

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Zirconia ceramic seal & spacers

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Zirconia ceramic bearing (G10)

Advanced ceramics, Ceramicas Avanzadas, zirconia ceramics, fine ceramics, precision ceramics, ceramic components, ceramic parts, ceramic bearing, G10, Lithaiwa,cerámica,industrial ceramics, engineered ceramics

We make custom products according to special design or requirements.

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Propiedades y aplicaciones de Zirconia (ZrO2) Cerámica

ZrO2 tiene dos tipos de estructura cúbica alotrópica de zirconio (fase c), estructura tetragonal (fase t) y estructura monoclínica (fase m).

De acuerdo con la composición de las fases contenidas, las cerámicas de zirconia se pueden dividir en materiales cerámicos de zirconia estabilizados y cerámicas de zirconia parcialmente estabilizadas.

 

Cerámica estabilizada de zirconia

Las cerámicas de zirconia estabilizada se componen principalmente de fases cúbicas.

Tienen alta refractariedad, calor específico y conductividad térmica, y son materiales aislantes de alta temperatura ideales.

Se pueden usar como revestimientos para hornos de alta temperatura y también como varios recubrimientos resistentes al calor.
Las cerámicas de zirconia estabilizada tienen buena estabilidad química y son resistentes a la corrosión ácida y neutra a altas temperaturas,

pero no son resistentes a la corrosión alcalina.

Los metales de los Grupos V, VI y VII de la Tabla Periódica de los Elementos no reaccionan con ellos y pueden usarse como un crisol para fundir este metal.

Pure ZrO2 es un buen aislante, debido a sus características obvias de conductividad de iones a alta temperatura, puede usarse como elemento de calentamiento a 2000 ℃, un material de electrodo de alta temperatura, y también puede usarse como una lámpara para generar rayos ultravioleta.

Además, las características de conductividad de iones de oxígeno de las cerámicas de zirconia estabilizadas se pueden usar para hacer sensores de oxígeno para la medición de la concentración de oxígeno.

Cerámica de zirconia parcialmente estabilizada

Las cerámicas de zirconia parcialmente estabilizadas consisten en una estructura de dos fases de tc con muy alta resistencia, tenacidad a la fractura y resistencia al choque térmico, conocida como “acero cerámico”.

Al mismo tiempo, su coeficiente de conductividad térmica es pequeño, el efecto de aislamiento térmico es bueno, y el coeficiente de expansión térmica es relativamente grande, y es relativamente fácil de combinar con las partes metálicas. En el motor cerámico desarrollado recientemente, se utiliza para piezas de la pared interna del cilindro, pistón y tapa del cilindro.

Las cerámicas de zirconia parcialmente estabilizadas también se pueden usar como rodamientos no lubricados en la industria de la minería y los minerales, boquillas para equipos de limpieza con chorro de arena, piezas usadas en la industria de la metalurgia del polvo y matrices de punzonado para aplicaciones farmacéuticas.

Además, las cerámicas de zirconia parcialmente estabilizadas también se pueden usar como una variedad de dispositivos industriales y médicos de alta resistencia y alta resistencia.
Tales como la industria textil, tijeras de máquinas de caída, tijeras de lana, tijeras de producción de cinta, herramientas de la industria de la microelectrónica.

Las cerámicas de Zirconia también se pueden usar como materiales biocerámicos porque no reaccionan con los organismos vivos.

Properties and applications of Zirconia (ZrO2) Ceramics

ZrO2 has two kinds of zirconium allotrope cubic structure (c phase), tetragonal structure (t phase) and monoclinic structure (m phase).

According to the composition of the phases contained, zirconia ceramics can be divided into stabilized zirconia ceramic materials and partially stabilized zirconia ceramics.

 

Stabilized zirconia ceramics

Stabilized zirconia ceramics are mainly composed of cubic phases.

They have high refractoriness, specific heat and thermal conductivity, and are ideal high-temperature insulation materials.

They can be used as linings for high-temperature furnaces and also as various heat-resistant coatings.
Stabilized zirconia ceramics have good chemical stability and are resistant to acid and neutral corrosion at high temperatures,

but are not resistant to alkaline corrosion.

The metals of Groups V, VI, and VII of the Periodic Table of the Elements do not react with them and can be used as a crucible for smelting this metal.

Pure ZrO2 is a good insulator, because of its obvious high-temperature ion conductivity characteristics, can be used as a heating element at 2000℃, a high-temperature electrode material, and also can be used as a lamp for generating ultraviolet rays.

 

In addition, the oxygen ion conductivity characteristics of stabilized zirconia ceramics can be used to make oxygen sensors for oxygen concentration measurement.

 

Partially stabilized zirconia ceramics

Partially stabilized zirconia ceramics consist of a tc two-phase structure with very high strength, fracture toughness, and thermal shock resistance, known as “ceramic steel.”

At the same time, its thermal conductivity coefficient is small, thermal insulation effect is good, and thermal expansion coefficient is relatively large, and it is relatively easy to match with metal parts. In the ceramic engine developed recently, it is used for cylinder inner wall, piston and cylinder cover parts.

Partially stabilized zirconia ceramics can also be used as non-lubricated bearings in the mining and minerals industry, nozzles for sandblasting equipment, parts used in the powder metallurgy industry, and punching dies for pharmaceutical applications.

In addition, partially stabilized zirconia ceramics can also be used as a variety of high toughness, high strength industrial and medical devices.
Such as the textile industry drop machine scissors, wool scissors, tape production scissors, microelectronics industry tools.

Zirconia ceramics can also be used as bioceramic materials because they do not react with living organisms.

 

 

 

Cerámica de Zirconia

Las ventajas de la Cerámica de Zirconia

1. Alta dureza, alta tenacidad, alta resistencia a la flexión, densidad cerámica de zirconia de 5.95-6.05g / cm3, la resistencia cerámica de zirconia es 8MPa · m1 / 2 o más;

2. Alta resistencia al desgaste, bajo coeficiente de fricción, resistencia al desgaste es 15 veces mayor que la de las cerámicas de alúmina, el coeficiente de fricción es solo 1/2 de las cerámicas de alúmina, después del proceso de pulido (pulido), el acabado superficial es mejor, hasta ▽ 9 , superficie del espejo, extremadamente lisa, con un menor coeficiente de fricción;

3. Buen aislamiento, resistencia a la corrosión, no electricidad estática, resistencia a altas temperaturas, excelente aislamiento térmico, coeficiente de expansión térmica es similar a la del acero;

4. Las cerámicas de Zirconia tienen autolubricación, pueden resolver la contaminación causada por el medio de lubricación y las molestias causadas por la alimentación.

 

Tipo de cerámica de zirconia

1. Propiedades de las cerámicas de zirconia estabilizada con itria: la temperatura de trabajo es de hasta 2100 ° C, alta densidad, baja conductividad térmica, químicamente inerte, fusión de metales, conductividad de iones, resistencia al desgaste, alta dureza, alta resistencia a la fractura;

2. Propiedades de cerámicas de zirconia estabilizada de cerio: la temperatura de trabajo es de hasta 2100 ° C, alta densidad, baja conductividad térmica, químicamente inerte, resistencia a la fusión de metales, resistencia al desgaste, alta dureza, alta resistencia a la fractura;

3. Propiedades de las cerámicas de zirconia estabilizada con magnesio: la temperatura de trabajo es de hasta 2400 ° C, alta densidad, baja conductividad térmica, químicamente inerte, resistencia a la fusión del metal, resistencia al desgaste, alta dureza, alta resistencia a la fractura.

Zirconia Parámetros de rendimiento de cerámica

Composición química: ZRO2≥94.5%
Densidad: 6g / cm3
Temperatura de sinterización: 1550 ~ 2600 ° C
Resistencia del voltaje de ruptura: 15 kV / mm
Absorción de agua: <0.01%
Resistencia a la compresión: 5000 MPa
Dureza: ≥88 (Hra)
Resistencia de volumen:> 1012 cm
Resistencia a la flexión: 1100 MPa
Coeficiente de expansión térmica: 6.9 ~ 10 x10 ^ (- 6) / k
Conductividad térmica: 2.5 W / m-k
Resistencia al calor: 1800 ° C

Aplicaciones típicas de la cerámica de zirconia

Las cerámicas de zirconia se utilizan principalmente en dispositivos de alta potencia, tubos IC MOS, aislamiento térmico tipo chip IGBT, alimentación de alta frecuencia, comunicaciones, equipos mecánicos, alta corriente, alta tensión, alta temperatura y otras partes que requieren conductividad térmica y aislamiento térmico.

Zirconia Ceramics

The advantages of Zirconia Ceramics

1. High hardness, high toughness, high bending strength, zirconia ceramic density is 5.95-6.05g/cm3, zirconia ceramic toughness is 8MPa · m1/2 or more higher;

2. High wear resistance, low friction coefficient, wear resistance is 15 times that of alumina ceramics, friction coefficient is only 1/2 of that of alumina ceramics, after grinding(polishing) processing, the surface finish is better, up to ▽9, mirror surface, extremely smooth, with a lower coefficient of friction;

3. Good insulation, corrosion resistance, no static electricity, high temperature resistance, excellent thermal insulation, thermal expansion coefficient is close to that of steel;

4. Zirconia ceramics have self-lubrication, can solve the pollution caused by the lubricating medium and inconvenience caused by feeding.

 

Type of Zirconia Ceramics

1. Properties of Yttria Stabilized Zirconia ceramics: The working temperature is up to 2100 ℃; high density, low thermal conductivity; chemically inert; anti-metal melting; ion conductivity; wear resistance, high hardness, high fracture toughness;

2. Properties of Cerium Stabilized Zirconia ceramics: The working temperature is up to 2100 ℃; high density, low thermal conductivity; chemically inert; resistance to metal melting; wear resistance, high hardness, high fracture toughness;

3. Properties of Magnesium Stabilized Zirconia ceramics: The working temperature is up to 2400 ℃; high density, low thermal conductivity; chemically inert; resistance to metal melting; wear resistance, high hardness, high fracture toughness.

Zirconia Ceramic performance parameters

Chemical composition: ZRO2≥94.5%
Density: 6g/cm3
Sintering temperature: 1550~2600°C
Breakdown voltage strength: 15 kV/mm
Water absorption: <0.01%
Compressive strength: 5000 MPa
Hardness: ≥88(Hra)
Volume resistance: >1012 cm
Bending strength: 1100 MPa
Thermal expansion coefficient: 6.9~10 x10^(-6)/k
Thermal conductivity: 2.5 W/m-k
Heat resistance: 1800 °C

Typical Applications of Zirconia Ceramics

Zirconia ceramics are mainly used in high-power devices, IC MOS tubes, IGBT chip-type thermal insulation, high-frequency power, communications, mechanical equipment, high current, high voltage, high temperature and other parts that require thermal conductivity and thermal insulation.

The properties and applications of zirconia ceramics

The properties and applications of zirconia ceramics

1. The properties of zirconia ceramics

Zirconia ceramics have high density, high hardness, especially have the highest mechanical properties, say, bending strength and fracture toughness among all advanced ceramics.

2. Applications of zirconia ceramics

In adiabatic internal combustion engines, tank-varying zirconia ceramics can be used as cylinder linings, piston crowns, valve guides, intake and exhaust valve seats, bearings and piston rings, etc., and can be used as rotors in rotary cylinder engines.

Zirconia ceramics can be used as wear-resistant and corrosion-resistant parts, such as bearings used in the mining industry, mud pump seals for the chemical industry, blades and pump bodies, as well as molds (wire drawing dies, pull tube dies, etc.), cutters, nozzles, heat insulators, wear-resistant and corrosion-resistant parts for rocket and jet engines, and high-temperature structural materials for nuclear reactor engineering.

Zirconia ceramics can also be used as power conductive ceramics.

With the conductivity of ZrO2 at high temperatures, zirconia conductive ceramics can be used as high temperature electrodes and heating materials.

The use of ZrO2 has the property of transferring oxygen ions under certain conditions, and can be made into solid oxygen concentration batteries, oxygen sensors, and determination of oxygen concentration.

Oxygen concentration battery can measure oxygen concentration, manufacture fuel cell, make oxygen, hydrogen production by moisture method, etc.

The oxygen meter for steelmaking can accurately determine the oxygen content in molten steel. The main body of the oxygen analyzer is ZrO2 solid electrolyte.

The zirconia oxygen sensor can be used to determine the oxygen content in the vehicle exhaust, so as to control the air-fuel ratio, so as to save fuel and reduce the pollution of the exhaust gas.

In addition, the thermal conductivity and electrical conductivity of zirconia conductive ceramics can also be utilized as a high-temperature heating material (maximum heating temperature in air up to 2100-2200°C) and high-temperature electrode materials (for example, electrodes in magnetofluid generators).