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Posté le 18/02/2020  
Industrial Ceramic Products
Most type of ceramics get excellent insulation characteristic for electricity and non-conductivity for heat, meanwhile most ceramics also get low thermal shock susceptibility, they still maintain good insulation and strong strength during sharply temperature changing. So most ceramic materials are good choices to make ceramic insulators, such as steatite, mullite, alumina and zirconia.
Alumina is the most commonly used ceramics as it is not only inherently non-conductive for heat and electricity, it has a high electrical resistivity, increasing with purity. It also possesses a high mechanical strength, high temperature operation with relatively lower cost. For some high voltage devices, they require insulators not only to contain the electric current, but also to not interfere with it, such as high voltage spark arrestors and spark plug gap insulators. However, many critical applications require much more than just these inherent material properties. They require the professional knowledge and design integrated into all highly specialized OEM ceramic parts fulfilling these needs. We can make alumina insulators from high purity alumina, so they are fully dense and vacuum compatible for vacuum chambers or similar scientific instruments.
Ceramic Insulators
Precision Ceramic Insulators
Industrial Ceramic Insulators
These alumina insulators could have surface glazing to get an improved insulation capability in wet weather. Also they can be applied to metallization treatment for brazing with metal fabrications together. Their alumina bodies will be good insulators between metal fabrications.
Fine-Boon company provides not only defect-free OEM ceramic insulators for high voltage insulation applications, but also a professional technical ceramic solutions for your electrical and thermal insulation purpose. Our strict quality assurance in production assures every batch of ceramic insulator is qualified with consistent, fully recorded and traceable documents. All our OEM ceramic insulators are tested under vacuum leakage test. In addition, all our OEM ceramic insulators are check with dye penetrant to avoid minor cracks. And they are also visually inspected under magnification, all of these qualify inspection will ensure that we can deliver perfect ceramic insulators for you.
Main Parameters for Our Ceramic Insulators:
Product NameAdvanced Alumina Ceramic Insulators with High Precision
Compositions99.5% Alumina
ColorIvory White
Density3.93 g/cm3
Tolerance+/- 0.01mm
FinishingSurface Glazing is optional
Dielectric Strength17 KV/mm
Volume Resistivity, 25掳C> 1 X 1014 Ohms-cm
Max. Using Temperature1800 掳C
Using FieldsElectrical Appliance, electric products
The Main Advantages for High Precision Alumina Ceramic Insulators:
- Surface glazing is available
- Metallization treatment is also optional
- High precision with tight tolerance control
- Good hardness and outstanding toughness
- Secondary CNC fine-machining and metallization is available
- Good insulation, anti-magnetic, static electricity-free characters
- Excellent thermal shock resistance and good thermal stability
- Anti corrosion & abrasion resistance in harsh working conditions
- Reliable quality and durable life for high voltage electricity
- Complying with ROHS and REACH regulations
- Non-toxic, healthy material, environmental friendly
- Professional ceramic R&D team for one stop service
Alumina and Steatitel Properties Comparason Sheet
-Shanghai Fine-Boon
Bulk densityg/cm32.83.783.89
Water Absorption%000
Grain size渭m-5-102-5
Vickers Hardness HV1GPa5.81315.2
Bending strength(3PB)R.T.MPa190350310
Young's Modulus of ElasticityGPa120320360
Poisson's Ratio-
Coefficient of Linear Expansion 40~40x10-6/鈩?/p>
Coefficient of Linear Expansion 40~80x10-6/鈩?/p>87.98
Thermal ConductivityW/m路 K22429
Specific HeatJ/g路k0.750.780.79
Heat Shock Resistance鈩?/p>-200200
Dielectric StrengthkV/mm181515
Volume Resistivity
Volume Resistivity
Volume Resistivity
Dielectric Constant (1MHz)-69.49.9
Dielectric Loss Angle (1MHz)-1840.0002
Loss Factorx1041083820
Nitric Acid(60%)90鈩?/p>mg/cm2--0.1
Sulphuric Acid(95%)95鈩?/p>mg/cm2--0.33
Caustic Soda(30%)80鈩?/p>mg/cm2--0.26Industrial Ceramic Products


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