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for Coating Machine High Temperature Resistance Corrosion Resistance
Metallized ceramic bushings are the unsung heroes of reliable ceramic-metal connections – boasting excellent insulation and strong metallurgical bonding.
✅ Excellent insulation properties for high-performance applications
✅ Precise metallization process for perfect ceramic-metal combination
✅ Full range of standard sizes + custom shapes/sizes to meet your unique needs
Metallized Alumina Ceramic Alumina (Al₂O₃) ceramic parts represent advanced engineering components manufactured from high-purity aluminum oxide.
With exceptional hardness, thermal stability, chemical resistance, and electrical insulation properties, these precision components serve critical f
unctions across semiconductor, medical, industrial, and high-tech applications where traditional materials fail to perform.
Application
Applications:
Feed-through insulators
Power switches
Insulating discs
Traveling wave tubes
Insulator rings and cylinders
Vacuum interrupters
Headers
Windows
High-power receptacles
Power grid tubes
Precipitator products
X-ray tubes
Joining types:
Ceramic + Mo/Mn Metallized + plating Ni
Ceramic + Mo/Mn Metallized + plating Ag
Ceramic + Mo/Mn Metallized + plating Au
Ceramic + printing Ag
* Special types are available according to customer's drawings or samples.
Specifications
Mechanical Properties
Properties
Unit
95%Al2O3
99%Al2O3
99.5%Al2O3
Colour
--
White
Yellow
Yellow
Density
g/cm³
3.7
3.85
3.9
Hardness
GPa
13.7
15.2
15.7
Compressive Strength
MPa
2000
2160
2350
Flexural Strength
MPa
280
310
350
Fracture Toughness
MPa・m1/2
3~4
3~4
4.5
Modulus of Elasticity
GPa
320
360
370
Poissons Ratio
--
0.23
0.23
0.23
Thermal Properties
Properties
Unit
95%Al2O3
99%Al2O3
99.5%Al2O3
Maximum Use Temperature
℃(No load)
1650
1650
1650
Thermal Conductivity @ 20°C
W/(m・K)
24
29
32
Thermal Expansion a at 20–400°C
1 x 10-6/°C
7~8
7~8
7~8
Specific Heat
J/(kg・K)
780
790
780
Thermal Shock Resistance
℃(Put in water)
200
200
200
Electrical Properties
Properties
Unit
95%Al2O3
99%Al2O3
99.5%Al2O3
Dielectric Constant
1MHz
9.4
9.9
9.9
Dielectric Strength
V/m
15 x 10 6
15 x 10 6
15 x 10 6
Dielectric Loss
1MHz
4 x 10 -4
4 x 10 -4
4 x 10 -4
Volume Resistivity @ 25°C
Ω・cm
>10 14
>10 14
>10 14
Volume Resistivity @ 500°C
Ω・cm
>10 8
>10 8
>10 10
Various Types of Metallized Alumina Ceramic
We Can Do OEM and 0BM According to Your Drawing and Requirements.
Ceramic-to-Metal brazing components are widely used in electrical engineering due to their good performance
for high-vacuum, high-voltageand high-pressureapplications. We manufacture a large range of metalized
ceramic components with the latest technologies in order to meet the needs of our clients. Our metallizing
processes could be customized according to clients’ requirements.
Material :
· Insulator-Glazed Ceramic 95% or 99% Al2O3 (white or pink)
· Feedthroughs are custom made to specifications that determined by the electrical, temperature, and environmental condition requirements.
· Standard parts are available
Characteristics
· High Abrasion Resistance
· High Mechanical Strength
· Pressures over 10,000 PSI
· High Temperature Usage
· Low Dielectric Loss
· Mass Spectrometer Leak Tested
· High Chemical Stability
Typical Applications:
· Aerospace
· Defense Industries
· Aviation
· Industrial Application
· Nuclear Equipment
Packing
Hunan Yuanhong New Material Co.,Ltd was established in 2016 ,there are over 100 sets of ceramic professional equipments , several types of furnace in more than 8000 square meters production workshops. ISO9001 certified, a variety of advanced ceramic materials are ROHS and REACH certified.
FAQ
Q1. Do you provide product samples? Yes, we provide samples subject to availability. A nominal sample fee may apply in some cases, and shipping costs are borne by the customer.
Q2. What are your accepted payment methods? We accept T/T (bank transfer) in advance, Western Union, Alipay, and PayPal.
Q3. What is your typical delivery lead time? Lead times vary depending on product requirements, including material selection, dimensions, and specific manufacturing processes.
Q4. Do you perform quality inspection before shipment? Yes, we conduct 100% inspection of all goods prior to delivery to ensure they meet specified standards.
Q5. What other ceramic materials do you offer? We supply a range of advanced ceramic materials, including Alumina, Zirconia, Aluminum Nitride,Boron Nitride, Silicon Nitride, Machinable Glass Ceramic, and related specialized ceramic