Materials | Microns Advanced Ceramics Technology LLC

Ceramic Materials

MAC products include a wide array of technical and advanced ceramics such as Alumina, Zirconia, Silicon Carbide, and Silicon Nitride. These materials have been meticulously engineered to enhance and extend the performance of your products, processes, or systems. Our ceramics offer a multitude of benefits, including high temperature stability, hard and wear-resistant surfaces, improved stiffness-to-weight ratios, anti-corrosive barriers, and low thermal expansion rates. With MAC' technical ceramics, you can gain significant performance and cost advantages, tailored to meet your specific needs.

Alumina Ceramic

Alumina Ceramics is the most widely used fine ceramics material. This material has superb material characteristics such as high electrical insulation, high mechanical strength, high wear and chemical resistance.Common alumina ceramics are divided into 99 porcelain, 95 porcelain, 93 porcelain, 92 porcelain, 85 porcelain and other varieties according to the ₃ content of Al₂O₃

Yttria Stabilized Zirconia

YSZ ceramics are widely used to handle corrosive chemicals and molten metal. It also provide low contamination due to the wear resistance and corrosion resistance.
Applications of Yttria Stabilized Zirconia (YSZ) parts
Used for grinding ceramics materials, magnetic materials and organic samples
Bearing and other wear resistance mechanical parts
Special pump parts

Magnesium/Ceriu Stabilized Zirconia

Zirconia ceramics, ZrO2 ceramics
Magnesium/Cerium Stabilized Zironia ceramic main features:
Excellent fracture toughness
Good wear resistance
Good corrosion resistance
Good thermal shock
Magnesium/Cerium Stabilized Zirconia ceramic main application:
Pump parts
Valve components
Bearings

Zirconia Toughened Alumina

ZTA is the result of stress-induced phase transformation toughening and is achieved by uniformly mixing fine zirconia particles throughout the alumina. Typically, we offer ZTA contains 6% volume of zirconia in alumina. Also the ZrO2 content is flexible depends on the demands of applications.
The most used toughening method for alumina ceramics is ZrO2 (VK-R30) toughening.

Silicon Nitride

Silicon nitride ceramics is superior to other materials due to its thermal shock resistance. It does not deteriorate at high temperatures, so it’s used for automotive engines and parts for gas turbines, including the turbocharger rotor.
silicon nitride bonded silicon carbide brick (silicon nitride bonded silicon carbide brick) refers to the use of SiC and Si as raw materials, by nitriding fired refractory products.

Silicon Carbide

The heat and properties of SiC make it a wide range of applications. The main driving force of interest for SiC in electronic applications is high power, high frequency and high temperature devices that are resistant to radiation damage.
It is the hardest of traditional abrasives, but has lower impact resistance than alumina and shows higher wear rates when used to grind steel.

How to Choose Ceramic Material

The hardness of ceramic materials varies: Zirconia (ZrO2) and Alumina (Al2O3) typically range from 8.8 to 9.0 on the Mohs scale, finding applications in dental implants and cutting tools due to their mechanical properties. Silicon Carbide (SiC) and Silicon Nitride (Si3N4) both exhibit a hardness of 9.0 on the Mohs scale, making them suitable for abrasive materials, refractories, and high-wear applications such as bearings and turbine components. These ceramics play vital roles across industries, offering excellent hardness properties to enhance performance and durability.

The provided data represents dielectric strength measurements for various ceramic materials, with values ranging from 15.0 to 20.0 volts per unit thickness. Zirconia and silicon carbide exhibit the highest values of 20.0 volts per unit thickness, indicating excellent resistance to electrical breakdown. Alumina and silicon nitride show slightly lower dielectric strength values of 16.0 to 19.0 volts per unit thickness, still demonstrating good electrical insulating properties. Notably, one data point shows a dielectric strength of 0.0 volts per unit thickness, which may indicate a measurement error or a particular condition affecting the material's performance. Overall, the data highlights the varying dielectric strengths of different ceramic materials, underscoring their importance in diverse electrical and electronic applications.

The density of ceramic materials varies: Zirconia (ZrO2) typically ranges from 3.65 to 3.95 g/cm³ and is used in dental implants and thermal barrier coatings; Alumina (Al2O3) ranges from 3.75 to 3.94 g/cm³ and is common in cutting tools and electrical insulators; Silicon Carbide (SiC) ranges from 3.80 to 5.90 g/cm³ and is widely used in abrasive materials and semiconductor manufacturing; Silicon Nitride (Si3N4) ranges from 3.14 to 3.20 g/cm³ and finds applications in bearings and turbine components.

The compressive strength data for ceramic materials ranges from 1910 MPa to 3000 MPa. Silicon nitride exhibits the highest strength at 3000 MPa, followed closely by silicon carbide, alumina, and zirconia with values ranging from 2210 MPa to 2300 MPa. These ceramics find applications in industries such as aerospace, automotive, electronics, and medical devices, where their high mechanical strength is essential for structural components, cutting tools, and abrasives.

The thermal conductivity of ceramic materials varies widely: Zirconia (ZrO2) and Alumina (Al2O3) typically exhibit moderate to high thermal conductivity, ranging from 25.0 to 30.0 W/m·K, and are used in applications such as thermal barrier coatings and electrical insulators. Silicon Carbide (SiC) demonstrates exceptionally high thermal conductivity, ranging from 80.0 to 30.0 W/m·K, making it suitable for heat exchangers and electronic devices. On the other hand, Silicon Nitride (Si3N4) has a wide range of thermal conductivity values, from 2.5 to 30.0 W/m·K, and finds applications in gas turbine engines and cutting tools. These ceramics play crucial roles in various industries, providing effective thermal management solutions.

The maximum working temperature of ceramic materials varies: Zirconia (ZrO2) typically ranges from 1500°C to 1750°C and is used in thermal barrier coatings and dental implants; Alumina (Al2O3) ranges from 1650°C to 1900°C and is common in furnace linings and cutting tools; Silicon Carbide (SiC) ranges from 1700°C to 1900°C and is widely used in abrasive materials and semiconductor manufacturing; Silicon Nitride (Si3N4) ranges from 1050°C to 1900°C and finds applications in bearings and turbine components.