Products Description

Insulation ceramic parts are industrial components made from ceramic materials, possessing excellent electrical insulation properties. Among these, alumina ceramic (aluminum oxide, Al2O3) stands as the most prevalent and versatile material. These ceramics are typically produced by high-temperature sintering of high-purity raw materials such as oxides (e.g., high purity alumina, zirconia), nitrides (e.g., aluminum nitride), or silicates. Their dense microstructure effectively blocks the flow of electric current. Insulation ceramics, including various alumina based ceramics and aluminosilicate ceramic, not only feature outstanding electrical insulation but also offer a comprehensive combination of advantages including high-temperature resistance, corrosion resistance, high mechanical strength, good thermal stability, and chemical stability. Consequently, they have become irreplaceable key materials in extreme or specialized working environments, fabricated into numerous forms such as alumina plates, alumina tubes, alumina bars, and alumina blocks to meet diverse application needs.

Insulation Parts Ceramic

Product name	Insulation parts ceramic
Material	99.7%,99.9%,99.99%Alumina,oxide toughening material,Parallelism
Color	Customized according to the client's requirements
size	Customized according to the client's requirements
Machining accuracy	±0.001mm
Packaging	Carton /Pallet/Wooden case (According to client requirement )
Delivery time	Standard Product-Within 3 days
Items Design	According to the client's drawing or samples
Features	Good quality, low price, Multiple factories, deliver to you based on the one closest to your location
Application	Industrial Ceramics
Certificate	ISO, CE

Ceramics performance parameter

Number	Performance	Unit
			95 Porcelain	97 Porcelain	Zirconia
			Al2O3	Al2O3	Zirconia
1	Density	g/cm3	3.7	3.8~3.85	6.00~6.10
2	Flexural strength	MPa	304	320	≥1100
3	Fracture toughness	MPa·m1/2	4	4.5	8
4	Dielectric constant	εr(20℃,1MHz)	9.0	9.2	10.6
5	Hardness	GPa	12.8-15	15	15
	Hardness	HRC	73-79	79	79
6	Volume resistivity	Ω·cm(20℃)	10 13	10 14	10 14
7	Elastic modulus	GPa	320	350	220
8	Coefficient of thermal expansion	×10-6/k	7.6	7.6	10.2
9	Compressive strength	MPa	1910	2100	2500
10	Abrasions	g/cm2	0.2	0.1	0.01
11	Thermal conductivity	W/m×k(20℃)	20	24~27	27
12	Poisson's ratio	/	0.22	0.22	0.3
13	Insulation strength	kv/mm	27	28	32
14	Temperature	℃	1520-1600	1650	1520

Main Performance

Electrical Insulation Performance: Possess extremely high volume resistivity (typically >10^12 Ω·cm) and excellent dielectric strength, effectively preventing current leakage or breakdown, making alumina an excellent electrical insulator. Suitable for high-voltage and high-frequency environments.
High-Temperature Resistance: Feature an extremely wide operating temperature range, capable of long-term stable operation in environments ranging from several hundred to over a thousand degrees Celsius. Insulation performance shows minimal degradation at high temperatures.
Mechanical Properties: High hardness, good wear resistance, and high compressive strength. However, they are typically brittle and have relatively weak impact resistance. The density of alumina contributes to its mechanical robustness.
Thermal Properties: Thermal conductivity varies by material (e.g., aluminum nitride offers high thermal conductivity, while some oxide ceramics like aluminum oxide ceramic have moderate conductivity). They have a low coefficient of thermal expansion, ensuring good dimensional stability.
Chemical Stability: Exhibit excellent corrosion resistance to most acids, alkalis, and molten metals. They are not prone to aging and have a long service life.
Weather Resistance: Performance is not affected by environmental factors such as humidity or UV exposure, ensuring long-lasting properties.

Primary Applications

Due to their comprehensive properties, insulation ceramic parts, particularly alumina ceramic components, are widely used across multiple high-tech fields and traditional industries. The alumina ceramic manufacturing process, including techniques like alumina ceramic injection molding, enables the production of custom alumina parts in complex shapes.

Electronics & Power Industry:

Integrated Circuits & Packaging: Used as chip substrates (alumina substrate), packaging housings, insulating substrates, ensuring circuit heat dissipation and electrical isolation. This includes alumina wafers and alumina ceramic discs.

High-Voltage Equipment: Used in high-voltage switches, vacuum circuit breakers, insulators, wall bushings, spark plugs, etc., ensuring safe insulation under high voltage.

Electric Heating Equipment: Serve as insulating support tubes (alumina tubing) for heating elements, thermocouple protection tubes, etc.

New Energy & Electric Vehicles:

Fuel Cells: Used as electrolyte membranes or insulating sealing components.

Power Batteries: Provide insulation and thermal isolation between battery cells.

IGBT Modules: High-performance ceramic substrates (e.g., AMB - Active Metal Brazed substrates) are core components for achieving heat dissipation and insulation in high-power devices. Ceramic cooling plates or ceramic carrier plates are key for thermal management.

Semiconductor Manufacturing:

Used in etching, diffusion, CVD, and other process equipment as alumina boats (wafer carriers), process chamber liners, gas nozzles, etc. These require high purity, plasma corrosion resistance, and high-temperature capability. Components like alumina crucibles and alumina tubes for furnace are also essential.

Metallurgy & High-Temperature Industries:

Used for furnace linings (alumina lining bricks), guide rails, temperature measurement protection tubes in smelting and sintering furnaces, as well as refractory functional components in continuous casting. Alumina bricks and alumina crucibles for melting are common.

Aerospace & Military:

Used for engine sensor protection, missile radomes, radar antenna windows, and various high-temperature electrical connection insulators. Ceramic armor plate or ceramic ballistic plates utilize materials like alumina ceramic armor for personnel and vehicle protection.

Medical & Analytical Instruments:

Applied in CT tube housings, high-voltage components of X-ray machines, mass spectrometers, laser tubes, etc., serving as insulation and support components such as alumina ceramic rods, alumina discs, and alumina rings.

Other Industrial Fields:

Mechanical & Structural: Used as alumina ceramic rods, alumina bars, alumina washers, alumina spacers, and alumina nozzles in demanding environments.

Laboratory & Processing: Alumina crucibles (including cylindrical alumina crucible), alumina mortars and pestles (alumina disc), and porous alumina ceramic filters are widely employed.

Specialized Components: Used as lamp bases for lasers and high-power lamps, corrosion-resistant insulating components in chemical equipment, alumina ceramic eyelets, alumina threaded rods, and alumina ceramic sheets. Machining alumina ceramic allows for the creation of precise custom alumina ceramic parts.