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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
Customized：Can be custom for special sizes and shapes
Ceramic plates sheet substrate disc series
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 | / | / |
