Alumina Metallized Ceramic Tube with Glazing and Brazing with Kovar for Vaccume Interupter

• Application: Aerospace, Electronics, Medical, Refractory
• Material Composition: Alumina, Al2O3
• Speciality: High Insulation, High Strength, Temperature Resistant
• Type: Ceramic Parts
• Treatment: Glazed, Polishing
• Color: White+Metal
• Coating Thickness: 8-30μm
• Plated Layer: Nickel/Copper/Gold
• Processing Service: Welding, Moulding
• Plating Thickness: 2-9μm
• Max. Use Temperature: 1600ºC
• Transport Package: Carton Packing
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China

Product Description

 

Product Description

High-Temperature Feedthrough Terminals are robust, built to withstand extreme conditions with high abrasion resistance, mechanical strength, and pressure tolerance over 10,000 PSI. They excel in high-temperature environments, maintain low dielectric loss, and are rigorously tested for leak integrity.

 

Material: >Insulator-Glazed Ceramic 95% or 99% Al2O3 (white or pink) >Feedthrugh - Nickel, Kovar, Copper >Weld Sheath/Flange-Nickel, Kovar, 304 Stainless Steel

 

 

Features

>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
 

Detailed Photos

Alumina Ceramic Properties
Properties	Units		Alumina Ceramic
Purity	wt%		95%	99%	99.8%
Volume Density	g/cm3		3.65	3.8	≥3.89
Water Absorption	%		0	0	0
Crystal Size(Grain Size)	μm		4-5	4-5	4-5
Vickers Hardness, HV1.0	Gpa		14	1600	≥15
Flexural Strength	Mpa		300	310	≥300
Coefficient of Linear Expansion	20-500ºC	1x10-6 mm/ºC	6.5-7.5	6.5-7.5	6.5~7.5
	20-800ºC		6.5-8.0	6.5-8.0	6.5~8.0
Thermal Conductivity	W/m·K( 20ºC)		20	25	≥20.9
Specific Heat Capacity	KJ/(kg·K)		≥0.8	≥0.8	≥0.8
Dielectric Strength	KV/mm		≥12	15*106	≥12
Volume Resistivity	Ω·cm 20ºC		≥1014	≥1014	≥1014
	Ω·cm 300ºC		≥1011	≥1011	≥1011
	Ω·cm 500ºC		≥109	≥109	≥109
Dielectric Constant	1MHz		9	9-10	9-10
Tangent of Dielectric Loss	1MHz		≤4x10-4	≤2x10-4	≤3x10-4
Surface Roughness	μm		0.4 After Machine	0.1-0.4 After Machine	0.1-0.4 After Machine
Max Working Temperature	ºC		1600	1600	1650

 

SEND ME

If you are interested in our products, please click here to send me an inquiry, and I will reply you within 8 hours