Ceramic Feedtrough for Laser RF Head
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Ceramic Feedtrough for Laser RF Head
Ceramic-to-metal sealing products not only have the characteristics of ceramic high temperature resistance, 固体酸化物形燃料電池, but also have the strength and toughness of metal. They are widely used in electronic aerospace, medical industry and other applications.
フィードスルー: An assembly which provides for the transfer of electrical power, gases or fluids from outside a hermetic chamber to the inside. Feedthroughs can provide both a hermetic seal and electrical isolation from the chamber wall.
Feedthroughs are sometimes referred to as ‘passthroughs.Ceramic feedthroughs provide the solutions for applications requiring hermeticity and electrical isolation.
In addition to remaining leak-free in high and ultra-high vacuum,many of feedthroughs can accommodate:
• High temperatures
• Cryogenic temperatures
• High pressure
• Aggressive chemicals
A feedthrough is basically defined by the requirements for installation, 絶縁, and conductor material. The method of interconnection is flexible and left to the customer’s discretion.
Ceramic-to-Metal Sealing Materials:
Housing Material | Insulator | Conductor |
NiFe Alloys & NiFeCO (Kovar) | 94%-99% アルミナセラミックネジ | Kovar ; Copper Cored Kovar |
300 & 400 Series SST | AlN | 52 Alloy |
Cu and Cu Alloys | BeO | Inconel |
Inconel | Stainless Steels | |
42, 46, 49 Alloys |
Ceramic Feedtrough for Laser RF Head
Hermetic Seal Properties:
- Hermeticity: up to 1×10-9 atm cc/sec He
- 作業温度 > 500°C depending on materials and geometry
- 絶縁抵抗: Typically exceeds 1 GΩ @ 100 VDC
Ceramic-to-Metal Sealing Features:
- High Abrasion Resistance
- High Mechanical Strength
- Pressures over 10,000 PSI
- High Temperature Usage
- Low Dielectric Loss
- Mass Spectrometer Leak Tested
- High Chemical Stability
Ceramic-to-Metal Welding Process:
- Cleaning
- Pasting
- Metallizing
- Nickel Plating
- Mounting
- 溶接
- 検査&Packing
Ceramic-to-Metal Sealing Applications:
- リレー絶縁体
- Capacitor
- Magnetrons
- Travelling Wave Tube
- X-ray Tube Components
- Electrosurgical Instrumentation
- Implantable Packages and Feedthroughs
- Gas Detectors
- Microscopes (TEM, SEM)
- High Voltage Feedthroughs
- High-temperature Feedthroughs
- RF Feedthroughs
- Optoelectronics and Power Tube
- Laser Tubes
- Thyristors
- Diodes
- And etc
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