Name: Electrical Insulation/Special Ceramics/Alumina Ceramic Disk
Brand: UNIPRETEC
Availability: InStock

Product Details

Electrical Insulation/Special Ceramics/Alumina Ceramic Disk

Specification:

*Good thermal conductivity
*Good strength and hardness
*Good resistance to wear and corrosion
*Temperature resistance up to 1700°C

Product Description

Material introduction:

Aluminium Oxide, Al2O3 is the most widely applied and cost effective technical ceramic material. It offers a combination of superior mechanical strength and electrical properties, wear resistance and corrosion resistance. The maximum working temperature is up to 1700 °C with relatively high thermal conductivity. It is also an electrically insulating material with a high electrical resistivity. The good corrosion resistance makes it insoluble in water and slightly soluble in strong acid and alkaline solution.

Available shapes:

Our Alumina Ceramic products can be made into different shapes like ceramic rods, ceramic bars, ceramic tubes/tubings, ceramic bushings/ceramic bushing, ceramic sleeves, ceramic seal rings, ceramic washers, ceramic ball valves, ceramic pistons, ceramic disks, ceramic plates/sheets/substrates or other customized shapes.

According to actual application and customer's requirement, the purities vary from 95%-99.7% and the forming methods will be different. The forming methods applied in our plant include dry pressing, isostatic pressing, injection moulding, extrusion moulding. With experienced engineers and talented workers, we are confident to offer high quality, high precision, complex components for customers worldwide.

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MATERIAL PROPERTIES

	Unit	95% Al2O3	99% Al2O3	ZrO2	GP-Si3N4
Color	-	white	ivory	white	gray
Density	g/cm³	3.65	3.88	5.95	3.22
Water Absorption	%	0	0	0	0
Young's Modulus	Gpa	280	350	205	295
Vickers Hardness	Gpa	14	20	12	18-20
Flexural Strength ( at R.T. )	Mpa	280	300	900	650
Compressive Strength ( at R.T. )	Mpa	2000	2500	2200	2200
Thermal Conductivity ( at R.T. )	W/(m.K)	18-25	30	2.2	25
Thermal Shock Resistance	ΔT(°C)	220	180-200	280-350	450-650
Max. Working Temperature ( at R.T. )	°C	1500	1700	850	1200
Volume Resistivity ( at R.T. )	Ω.cm	>10^15	>10^14	>10^12	>10^14
Dielectric Constant (1 MHz at R.T. )	-	9.50	9.80	26	8.20
Dielectric Strength	kV/mm	16	22	-	16

TYPICAL APPLICATIONS

- Wire and thread guides	- Ballistic Armor
- Mechanical seals	- Wear resistant linings
- Seal faces	- Semiconductor parts
- Valve seats	- Laser cavities
- Machine components	- Shot blast nozzles
- High temperature electrical insulators	- Knife Sharpeners
- High voltage insulators	- Precision shafts & axles in high wear environments
- Electronic components & substrates	- Roller & Ball Bearings

Company Information

As a professional company in advanced ceramic industries, UNIPRETEC is manufacturing and supplying high quality and high precision ceramic components for clients from worldwide. Our ceramic products are widely used in various fields of automotive, metallurgy, machinery, electronic & electrical, food, chemical, medical and so on. With experienced engineers and talented workers, we are able to evaluate projects and drawings properly, make valuable suggestion, supply satisfying products. Our materials including:

- Aluminium Oxide ( 95% 96% 99% 99.5% 99.7% Al2O3 )
- Zirconium Oxide ( Yttria stabilized ZrO2 )
- Silicon Nitride ( Gas pressure sintered & Hot pressed Si3N4 )
- Boron Carbide ( B4C )
- Boron Nitride ( Hot pressed BN )
- Machinable Glass Ceramic

Aiming at building long term cooperation relationship with our clients, we set our motto as "Quality First". Far now, our products have been exported to North Amirica, East Europe, West Europe, East Asia, Southeast Asia and get good reputation from our client.

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