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Ceramic ring

Insulatior ceramic washer

  • Materials：Alumina (Al2O3)/ Zirconia(ZrO2) /Si3N4 /SiC ...etc
  • Sizes：Custom according to the drawings
  • Delivery times：2 -25 days(depends on the quantity)
  • Precision：Ra 0.1um tolerance: 0.001mm... etc
  • Features：Heat resistance / Wear resistance / High purity / Refractory / High Corrosion / Good Insulation

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+86181-2297-4730

E-mail

admin@cerampart.com

Insulatior ceramic washer



Insulatior ceramic washer is a kind of closed parts which can fix and connect the belt, the belt, the belt and so on.
 
Insulatior ceramic washer effectively separate metal parts and prevent wear and tear and provide adequate mechanical support.In order to maintain the shape and position of insulation components, it is very important to protect the peripheral components from the surface and maintain their integrity.
 
Insulatior ceramic washer have small dielectric constant, low dielectric loss, high mechanical strength, high dielectric strength, insulation resistance and thermal conductivity.Ceramic gaskets are used in the manufacture of band switches, sockets, adjustable capacitor stator and shaft, porcelain plate, coil skeleton, variable inductance skeleton and so on.

Properties Units AL2O3 ZrO2 SiC Si3N4
Density g/cm3 3.65-3.93 5.95-6.0 3.12 3.23
Water absorption 0 0 0 0 0
Coefficientof thermal expansion 10-16/k 7.9-8.5 10.5 3 3.2
Modulus of elasticity young`s mod GPa 280-340 210 440 300
Poission`s ratio / 0.21-0.22 0.3 0.17 0.26
HV hardness hv MPa 1650 1300-1365 2800 1500
Flexural strength MPa 310 950 390 720
Flexural strength(700℃) MPa 230 210 380 450
Compressive strength MPa 2200 2000 1800 2300
Fracture toughness MPa*m1/2 4.2 10 3.9 6.2
Heat conductivity W/m*k 26-30 2-2.2 120 25
Electrical resistivity Ω*mm2/m >1016 >1015 >103 >1013
Max use temperature ℃ 1750 1050 1550 1050
Resistance to acid alkaline / high high high high
Dielectric constant / 9.6 29 9.66-10.03 /
Dielectric strength KV/mm 8.7 9 / /
Thermal shock resistance △T（℃） 180-220 280-350 230-260 /
Tensile strength MPa 248 250 / /

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Dongguan Mingrui Ceramic Technology Co., Ltd.
TEL：+8618122974730
MB：+86 181 2297 4730 Tel：+86 746 3386888
Skype：+86 181 2297 4730
Email：admin@cerampart.com
ADD：No. 21, Chuangxing Road, Shangsha Second Industrial Zone, Chang'an Town, Dongguan City