Dielectric / Electrical Insulation Industrial Ceramic Materials
Last Updated: April 1, 2025
Description
Dielectric or electrical insulation industrial ceramic materials are specialized ceramics designed to prevent the flow of electrical current between conductors. These materials act as barriers that allow only a negligible amount of current to pass through, ensuring that electrical systems function safely and efficiently. They are characterized by their high resistivity and ability to withstand high voltage stresses without conducting electricity.
Working Principle
Dielectric ceramics work by utilizing their inherent electrical properties to impede the flow of electrical current. These materials have a high volume resistivity, which means they resist the flow of electric charge. The dielectric constant of these ceramics is typically low, allowing them to store electrical energy in an electric field without conducting it. This makes them useful in applications where electrical insulation is critical, as they can effectively separate electrical conductors and prevent unwanted current flow, thereby enhancing the safety and reliability of electrical systems.
Applications
Dielectric ceramics are used in a wide range of applications across various industries. For instance, they are employed in high voltage isolators in power generation and transmission systems to prevent electrical arcing and reduce the risk of fires. In the electronics industry, these materials are used in semiconductors and electrical power products to ensure efficient and safe operation. Additionally, they are utilized in the aerospace and automotive industries, where their ability to withstand high voltages and harsh conditions is crucial for maintaining the integrity of electrical systems.
Advantages over other Industrial Ceramic Materials
Dielectric ceramics offer several advantages over other industrial ceramic materials. For example, high voltage-resistance alumina ceramics provide superior electrical insulation and are engineered to withstand demanding conditions, making them ideal for applications where safety is paramount. These materials also exhibit excellent resistance to electrical discharge, contributing to their reliability and longevity in critical applications. Furthermore, their ability to minimize energy loss and reduce the carbon footprint makes them an environmentally sustainable choice.
Limitations
Despite their advantages, dielectric ceramics have certain limitations. They may not be suitable for applications requiring high thermal conductivity, as their primary function is electrical insulation rather than heat dissipation. Additionally, the performance of dielectric ceramics can be affected by environmental factors such as moisture and temperature fluctuations, which may impact their insulating properties over time.
Considerations
When selecting dielectric ceramics for specific applications, several considerations should be taken into account. Initial costs can vary depending on the type of ceramic and its specific properties, while operating expenses may be influenced by the material's durability and maintenance requirements. Dielectric ceramics are generally durable and require minimal maintenance, but their performance should be regularly monitored to ensure continued effectiveness. Replacement costs should also be considered, particularly in high-stress applications where the material may degrade more quickly.
from 3X Ceramic Parts Company Limited
99 Al2O3 99.7 Alumina Ceramic Holed Plate. Alumina Ceramic Holed plate forming way is isostatic pressing which with higher density , zero porosity . The holes are machined by cnc machining . We could reach high tolerance for machining such type of alumina ceramic plate , as fine as 0.005mm. It is... [See More]
- Material Type: Alumina
- Density: 3.92
- CTE: 7.9 to 8.5
- MOR / Flexural Strength: 40610 to 44961
from 3X Ceramic Parts Company Limited
Alumina Ceramic Insulator Description : Alumina is the most cost effective and widely used material in the family of engineering ceramics. The raw materials from which this high performance technical grade ceramic is made are readily available and reasonably priced, resulting in good value for the... [See More]
- Material Type: Alumina
- CTE: 8.2 to 8.4
- Shape / Form: Custom Shape
- Density: 3.6 to 3.94
from 3X Ceramic Parts Company Limited
Aluminum Nitride Characteristics: Aluminum Nitride Crucible with excellent thermal , mechanical and electrical properties, such as High thermal conductivity, low dielectric constant, linear expansion coefficient matched with silicon, excellent electrical insulation, low density, non-toxic, strength... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- CTE: 3 to 4.5
- Thermal Conductivity: 165 to 185
- Density: 3.34 to 3.6
from 3X Ceramic Parts Company Limited
Aluminum Nitride (AlN) Substrate Description: AlN substrate is produced by tape casting using AlN powder as raw material and high temperature sintering. It has all the unique properties of AlN material and meets the requirements for electronic packaging baseplate, which makes it the key material in... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- Thermal Conductivity: 165 to 185
- Shape / Form: Rod; Custom Shape; BarStock
- Density: 3.34 to 3.36
from 3X Ceramic Parts Company Limited
Aluminum Nitride Tube Properties. High thermal conductivity,(170-230W/mK), up to 9.5 times than that of Alumina. Similar coefficient of thermal expansion to that of silicon(Si). Higher electric insulation, and Smaller dielectric constant. Higher mechanical strength (450MPa). Superior corrosion... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- CTE: 3 to 4.5
- Thermal Conductivity: 165 to 185
- Density: 3.34 to 3.36
from 3X Ceramic Parts Company Limited
High Precision Machining Zirconia Cermaic or 99% Alumina Ceramic Ball Valve Seat. Besides some advantages of metal valve, ceramic ball valve seat can also resist corrosion, high temperature,wear and erosion.Ceramic Ball Seat can be used in different kinds of acids bases and salts gas, liquid,stream... [See More]
- Material Type: Alumina; Zirconia; SpecialtyMaterial
- Density: 2.7 to 6
- CTE: 3.2 to 10
- MOR / Flexural Strength: 15664 to 166792
from 3X Ceramic Parts Company Limited
Ceramic Fork Aluminum Nitride Vacuum Plate for LED wafer. Aluminum nitride ceramic fork have excellent physical properties such as high thermal conductivity, low dielectric constant, reliable electrical insulation, thermal expansion coefficient matched with silicon, insulation and non toxicity. They... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- Thermal Conductivity: 170
- Shape / Form: BarStock
- Density: 3.36
from 3X Ceramic Parts Company Limited
3X Ceramic Parts Company provide different material of Ceramic Guide Pin: Silicone Nitride Guide Pin, Welding Pin. Nano Zirconia blue ceramic guide pin , raw material imported from Germany. China produced Blue Zirconia Ceramic material. ZTA material. White Zirconia Ceramic material. Alumina Ceramic... [See More]
- Material Type: Alumina; Silicon Nitride; Zirconia; SpecialtyMaterial
- Dielectric Strength: 2.00E7 to 3.00E7
- Compressive Strength: 362592 to 565644
from 3X Ceramic Parts Company Limited
Ceramic Plunger Description : Our ceramic plungers are made of high quality imported raw materials, cold isostatic pressing forming way , and assembled with stainless steel metal parts after high temperature sintering. As one of the main components of the plunger pump, the ceramic plunger is matched... [See More]
- Material Type: Alumina; Zirconia; SpecialtyMaterial
- Density: 2.4 to 3.95
- Shape / Form: Custom Shape
- Dielectric Strength: 7.87E6 to 8.86E6
from 3X Ceramic Parts Company Limited
Good Thermal Shock Resistant Silicon Nitride Welding Ring. Silicon Nitride Welding ring are used on automative welding for car manufacturers and suppliers . The physical and chemical properties as well as extreme stress tolerance extend the possible range to applications in production engineering . [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- CTE: 3.2
- Thermal Conductivity: 15 to 20
- Density: 3.2
from 3X Ceramic Parts Company Limited
Machinable Glass Ceramic Characteristics: The most outstanding characteristic of Machinable Glass Ceramic Disc is that it can be processed by turning, milling, planing, grinding, drilling, sawing and tapping with standard metal processing tools and equipment. It can be processed into products with... [See More]
- Material Type: Silicate / Clay; Glass Ceramics
- Density: 2.48
- Thermal Conductivity: 1.71
- MOR / Flexural Strength: 15664
from 3X Ceramic Parts Company Limited
Machinable Glass Ceramic Parts Machining Instruction: Machinable ceramics is a new kind of ceramic material, the material the use of metal processing tools and equipment can usually work out precision tolerance of the products, here is a brief introduction of its processing technology and methods. [See More]
- Material Type: Silicate / Clay; Glass Ceramics
- Density: 2.48
- Thermal Conductivity: 1.71
- MOR / Flexural Strength: 15664
from 3X Ceramic Parts Company Limited
Machinable Glass Ceramic Rod Properties : Machinable Glass Ceramic rod with excellent compressive strength, high thermal insulating value, radiation immunity, and excellent dielectrical strength. Unlike plastics, whose temperature resistance and rigidity starts to fall off at as little at 150... [See More]
- Material Type: Silicate / Clay; Glass Ceramics
- Density: 2.48
- Thermal Conductivity: 1.71
- MOR / Flexural Strength: 15664
from 3X Ceramic Parts Company Limited
Silicone Carbide Plate made of High Quality raw material : Our SiC ceramics powders are produced by advanced technique that has obtained national patent . The company carefully adopt the optimum seeking method to intercept SiC crystal section that has the most crystals and highest density of... [See More]
- Material Type: Carbide Material; Silicon Carbide
- Density: 3.2
- Thermal Conductivity: 120
- MOR / Flexural Strength: 56564
from 3X Ceramic Parts Company Limited
Silicon Nitride Breaking Segment. Characteristics of Silicon Nitride Breaking Segment : - High strength over a broad temperature range. -Moderate thermal conductivity. -Low coefficient of thermal expansion. -Moderately high elastic modulus. -Excellent thermal shock resistance. -Ability to withstand... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- Density: 3.28
- Thermal Conductivity: 25
from 3X Ceramic Parts Company Limited
3X Ceramic Parts produce and stock silicon nitride ceramic pin: In order to ensure a short lead time,we stock many quantity standard silicon nitride ceramic pins.M4,M5,M6,M7,M8,M10,M12,M14,7/16 silicon nitride ceramic guide pin are always in stock.We also supply customized ceramic pin according to... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- CTE: 3.3
- Thermal Conductivity: 15 to 20
- Density: 3.2
from 3X Ceramic Parts Company Limited
Silicon Nitride Rod Description: Silicon Nitride Rod is a commonly used ceramic material in the metallurgical industry due to the even performance in high temperature. Silicon Nitride Rod has excellent thermal shock resistance due to the microstructure. The creep and oxidation resistance of Si3N4 is... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- Density: 3.2
- Thermal Conductivity: 15 to 20
- MOR / Flexural Strength: 87022
from 3X Ceramic Parts Company Limited
Silicone Nitride Ceramic Wafer Material Description : Silicon nitride ceramic material has high hardness, low density, wear resistance and high temperature resistance. The rolling body is made of silicon nitride ceramic, while the other components are paired with bearing steel to form friction pair,... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- CTE: 3.3
- Thermal Conductivity: 15 to 20
- Density: 3.2
from 3X Ceramic Parts Company Limited
Silicon Nitride Welding Pin for Spot Welding Machine. We are a professional manufacturer for various type of ceramic welding pin . Its material types are also multi type for your option : alumina ceramic , silicon nitride pin , zirconia welding pin . Many of our customer prefer to choose silicon... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- Density: 3.23 to 6
- CTE: 3.2 to 10.5
- MOR / Flexural Strength: 104427 to 137785
from 3X Ceramic Parts Company Limited
Silicone Nitride Material Description : Silicon nitride ceramic material has high hardness, low density, wear resistance and high temperature resistance. The rolling body is made of silicon nitride ceramic, while the other components are paired with bearing steel to form friction pair, the friction... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- CTE: 3.3
- Thermal Conductivity: 15 to 20
- Density: 3.2
from 3X Ceramic Parts Company Limited
Thickness 0.15mm 0.25mm 0.5mm Aluminum Nitride Substrate. The Advantage of Aluminum Nitride Substrate : 3X Ceramic Parts company use tape casting to produce high thermal conductivity aluminum nitride substrates . * High Thermal Conductivity ≥170 W/ m.k. * Meet Variesties of metallization... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- Thermal Conductivity: 170
- Shape / Form: Custom Shape
- Density: 3.33
from 3X Ceramic Parts Company Limited
Thin Thickness 0.3mm 0.5mm 1mm Zirconia Ceramic Sheet. If the length and width of the zirconia sheet less than 250mm, and thickness less than 1mm we could use slip casting forming way for producing those ultra thin zirconia ceramic sheet . But it also depends on the requirements of the customer on... [See More]
- Material Type: Zirconia; SpecialtyMaterial
- CTE: 10.2 to 10.3
- Shape / Form: Custom Shape
- Density: 6.02
from Accuratus Corporation
Accuratus maintains an inventory of standard extruded and cast aluminum oxide, mullite and sialon shapes for fast delivery requirements. These are low cost, quality rods and tubes that can be quickly cut to precision lengths. (See Mullite Sizes, Aluminum Oxide Sizes and Sialon Sizes). Accuratus will... [See More]
- Material Type: Alumina
- Shape / Form: Rod
- Composition: 94% - 99.5% Al2O3
- Length: 59.06
from Superior Technical Ceramics Corp.
Plate sizes can be made to various thicknesses. Standard thicknesses are .125", .250", .375", .500", .625", .750", and 1.00". Not all plates can be made to the thicknesses listed above. Please contact us for the maximum thickness that can be manufactured for your desired plate size. [See More]
- Material Type: Alumina
- Length: 2.11
- Shape / Form: Plate / Board
- Width / Diameter: 2.11
from 3M Advanced Materials Division
3M boron nitride cooling fillers provide a unique opportunity to improve the efficiency of thermally conductive polymers while maintaining electrical resistivity of an insulator. Ongoing miniaturization and large-scale production of electronic components requires materials that can quickly and... [See More]
- Material Type: Boron Nitride; SpecialtyMaterial
- Density: 0.1500 to 0.5500
- Shape / Form: Custom Shape
- Applications: Cooling Fillers
from CoorsTek
Ceramic print head substrates provide reliable long-life print performance for high-resolution printers. CoorsTek provides custom engineered components and precision assemblies for a wide variety of computer peripheral and data storage electronics. Advanced technical ceramics provide high... [See More]
- Applications: Electronics or semiconductors; Computer Peripherals
from San Jose Delta Associates, Inc.
Aluminum Nitride - AlN, is most often the material of choice due to its relatively excellent thermal conductivity and non-toxic nature. Because San Jose Delta has a segregated beryllium oxide - BeO department with over 20 years of experience fabricating common microwave designs such as helix support... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- Thermal Conductivity: 170 to 200
- Shape / Form: Rod; Custom Shape
- CTE: 5
from Monocrystal, Inc.
Due to its dielectric and crystallographic properties, sapphire is an outstanding material for producing various wafers for electronic applications. Sapphire is the basic material in LED production, as its crystal lattice allows the growth of an epitaxial layer of gallium nitride (GaN) with fine... [See More]
- Material Type: Sapphire
- Width / Diameter: 2 to 10
- Shape / Form: WaferCarrier
- Thickness: 0.0059 to 0.0394
from Filtros Ltd.
For more than 50 years, Filtros Ltd. has manufactured custom designed specialty ceramic refractory. These products are used both as Structural Support and as Kiln Furniture in Sintering/Heat Treating/High Temperature Applications. Our goal is cost effective solutions emphasizing quality, service and... [See More]
- Shape / Form: KilnFurniture; Custom Shape
from Accuratus Corporation
Accuratus maintains an inventory of standard aluminum nitride substrates for fast delivery requirements. They are stocked in industry standard thicknesses of .025 inches and .040 inches. We will be happy to provide a quotation. Call us at 908-213-7070 or fax your requirement to 908-213-7069. If you... [See More]
- Material Type: Aluminum Nitride; SpecialtyMaterial
- Length: 2
- Shape / Form: WaferSubstrate
- Width / Diameter: 2
from 3M Advanced Materials Division
Heavy-duty diesel engines. Jet engine igniters. Oil wells thousands of feet underground. When extreme conditions like these push equipment to its limits, 3M ™ Silicon Nitride industrial ceramics deliver high performance where other materials fail. 3M silicon nitride is 60% lighter than steel... [See More]
- Material Type: Silicon Nitride; SpecialtyMaterial
- Applications: Abrasion Resistant; Electronics or semiconductors; Automotive, Aerospace
- Shape / Form: Tube; Hollow Stock (Tube, Pipe, Column); Immersion Tube or Sheath; Custom Shape
from CoorsTek
CoorsTek photomask substrates are made from high-purity synthetic quartz glass to deliver superior UV and visible light transmittance, thermal stability, electrical insulation, low birefringence, and durable chemical stability. Advanced, scalable polishing technology makes these photomask substrates... [See More]
- Material Type: Synthetic Quartz Glass
- Applications: Chemical or material processing; Lithography & Wafer Inspection
- Shape / Form: WaferCarrier
from Accuratus Corporation
Boron nitride is a white solid material in the as produced hot pressed form. It is a low porosity solid. It is easily machined into complex shapes using standard carbide tooling. The material is anisotropic in its electrical and mechanical properties due to the platy hexagonal crystals and their... [See More]
- Material Type: Boron Nitride; SpecialtyMaterial
- Shape / Form: Custom Shape