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Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance

  • Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance
Place of Origin Hunan,China
Brand Name Antaeus
Certification /
Model Number AD-B028
Minimum Order Quantity Negotiation
Price Negotiation
Packaging Details Inner vacuum packaging, outside carton.
Delivery Time 15-45 days
Payment Terms T/T or Negotiation
Supply Ability Full Supply

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Product Details
Product Name Metallized Alumina Ceramic Rings / Ceramic Insulators For Battery Material Alumina (Aluminum Oxide, Al2O3)
Insulation Resistance 1000M Ω（1000VDC) Thermal Shock Resistance Room Temperature To 850C Will Not Burst Or Leak After Five Operations
Max. Use Temp. 1650℃ Water Absorption 0
ROHS Hardness ≥89 Flexural Strength 550 Mpa(psix10^3)
Compressive Strength 2600(377) Mpa(psix10^3) Coefficient Of Thermal Expansion 8.2 X10^-6/℃
Coefficient Of Thermal Conductivity 17-30.4 W/m.K
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Insulated Alumina Ceramic Rings

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Al2O3 Alumina Ceramic Rings

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Al2O3 ceramic o ring
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Product Description

Alumina Seal Ceramic Rings / Industry Insulation Rings

 

1. Description:

Material analysis and comparison

The MCH heating sheet is a high-temperature co-fired multilayer metal-ceramic composite material. The heating metal paste layer is printed on the alumina ceramic green body as the insulating medium, and then another alumina ceramic green body is laminated on it. Co-fired into one. From the perspective of heating principle, the heating principle of MCH is metal tungsten conduction, and the high electrothermal conversion efficiency of metal tungsten is recognized. The nature of metal conduction is free electron conduction, and the outer layer of metal atoms has fewer electrons. After being combined into structural elements, atomic There are still more electron vacancies in the outer layer, which can accommodate foreign electrons to enter and move, so it is easy to conduct electricity.

PTC is essentially a semiconductor material. The principle of energization and heating is that a certain number of free electrons are formed by semiconductor doping. PTC is made of barium titanate as the matrix and doped with other polycrystalline ceramic materials, which has a low The resistance and semi-conductivity characteristics.

 

2. Feature Advantages:

1) Refractory, High Temperature Resistance, Maximum Used Temperature: 1800 ºC (3272ºF)
2) Hardness Strength, Wear Resistance Up To Mohz 9.0 ; HRA 80-90
3) High Voltage, Good Insulation Performance ,Electrical Resistivity Up To 10∧14 Ohm.Cm
4) High Polished Surface Up To Rz0.8(Ra0.1) 
5) Superior Mechanical Strength, MAX 10 MPa.m1/2 Fracture toughness
6) Pressure Resistance, Max 2300MPa compressive strength
7) Anti-High Corrosion Resistance, Such As Acid Alkali Resistance
8) Long Service Life
9) Other excellent property

 

3. Material Features / Properties:

Composite (wt %) 99% 99.5% 99.8%
Color   White or Ivory White or Ivory White or Ivory
Density g/cm 3 3.82 3.9 3.92
Hardness HRA 83 85 85
Flexural Strength Mpa (psi*10 3 ) 375 386 381

 

4. Technical Parameters:

Technical Parameters of Ceramics
Items Test Conditions Unit or Symbol 99% AL2O3 95% AL2O3 90% AL2O3 Zirconia Steatite Silicon Carbide
Volume Density -- g/cm3 ≥3.70 ≥3.62 ≥3.40 ≥5.90 ≥2.60 ≥3.08
Tightness -- Pa·m³/s ≤1.0×10-11 ≤1.0×10-11 ≤1.0×10-11 - - -
Liquid Permeability -- -- Pass Pass Pass   Pass -
Flexural Strength - MPa ≥300 ≥280 ≥230 ≥1100 ≥120 ≥400
Elastic Modulus - GPa - ≥280 ≥250 ≥220 - 400
Poisson Ratio - 　 - - 0.20～0.25 0.20～0.25 - - -
Thermal Shock Resistance 800℃( Room Temperature) Cycle: 10 times   Pass Pass Pass - - -
Coefficient of Linear Expansion 20℃～100℃ ×10-6 K-1 - - -   ≤8 -
20℃～500℃ ×10-6 K-1 6.5～7.5 6.5～7.5 6.5～7.5 6.5～11.2 - -
20℃～800℃ ×10-6 K-1 6.5～8.0 6.5～8.0 6.3～7.3   - 4
20℃～1200℃ ×10-6 K-1 - 7.0～8.5 - - - -
Coefficient of Thermal Conductivity 20℃ W/(m·k) - - - - - 90～110
1000℃
Dielectric Constant 1MHz 20℃ - 9.0～10.5 9.0～10 9.0～10 - ≤7.5 -
1MHz 50℃ - - 9.0～10 - - - -
10GHz 20℃ - 9.0～10.5 9.0～10 9.0～10 - - -
Volume Resistivity 100℃ Ω·cm ≥1.0×1013 ≥1.0×1013 ≥1.0×1013 - ≥1.0×1012 -
300℃ ≥1.0×1013 ≥1.0×1010 ≥1.0×1013 - - -
500℃ ≥1.0×109 ≥1.0×108 -- - - -
Disruptive Strength D.C kV/mm ≥17 ≥15 ≥15 - ≥20 -
Chemical Durability 1:9HCl mg/c㎡ ≤0.7 ≤7.0 - - - -
10%NaOH mg/c㎡ ≤0.1 ≤0.2 - -- - -
Grain Size - μm - 3~12 - - - -

 

5. Process Flows:

Formulating --- Granulating --- Forming --- Sintering --- Grinding --- Printing --- Nickel Plating --- Assembing --- Brazing --- Inspecting --- Packing

Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance 0

 

6. Production Facilities: Prilling Tower , Forming Machine , High Temperature Sintering Kiln

Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance 1

 

7. Detection Devices:

Electric Performance Tester , Film Thickness Analyzer , Granulometer , Helium Mass Spectrometer Leak Detector , Universal Pull Force Meter

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 8. Our advantages: Quality Assurance ; Price Competitive ; Factory Supply Directly ; Good Service

Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance 3

 

9. Shipping and Package:

Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance 4

10. Our aimed market: 

Insulated Al2O3 Alumina Ceramic Rings O Shape High Temperature Resistance 5

 

Notes:Above information only for reference and please contact with us for more details freely when you have any inquiry!

Tags:

Al2O3 Alumina Ceramic Rings

Sealed Alumina Ceramic Rings

Al2O3 Insulation Rings