High Performance Application Ceramic to Metal Seals Brazing Technology Orifice Plates

• Application: Aerospace, Electronics, Medical, Brazing, Feedthrough
• Material Composition: Alumina, Al2O3
• Speciality: High Insulation
• Type: Ceramic-to-Metal
• Compressive Strength: 2300MPa
• Chemical Resistance: Excellent
• Mechanical Strength: Excellent
• Color: Metal+White
• Thermal Conductivity: 25W/(M.K)
• Processing Service: Moulding
• Max. Use Temperature: 1600ºC
• Density: 3.7g/cm3
• Transport Package: Carton Packing
• Specification: Customized
• Trademark: INNOVACERA
• Origin: Fujian, China

Product Description

 

Ceramic to metal seals are hermetic joints created by fusing ceramic components to metal substrates using a variety of joining techniques. These seals are renowned for their exceptional heat resistance, chemical stability, and mechanical durability. They're able to withstand extreme temperatures and harsh environments, making them ideal for use in high-performance applications.

Brazing Technology is a crucial aspect of the manufacturing process of ceramic to metal seals. Brazing involves the use of a filler metal, which has a lower melting point than the base materials, to bond the ceramic and metal components together. This process creates a strong, reliable joint that maintains the integrity of both materials.

Material	Alumina/BeO/AlN
Coating Layer	Mo/Mn Thickness:8-30μm
Plated Layer	Nickel, Copper, Gold, etc.  Thickness: 2-9μm
Treatment	Glazed, polishing
Dimension	Customized

Joining types

Ceramic + Mo/Mn Metallized + plating Ni

Ceramic + Mo/Mn Metallized + plating Ag

Ceramic + Mo/Mn Metallized + plating Au

Ceramic + printing Ag

 

Application

> Feedthrough
> Metal/alloy ceramic metallized
> Screen Printing
> Roll Printing
> Hand Painting
> Air Brush Spraying
> Immersion
> Centrifugal Coating
> Needle Painting

 

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