Note: Sintering Powdered Metals for Satellite Positioning System
Objective:
Heat tantalum tubing to sinter tungsten and tantalum material to tubing.
End Product:
Tantalum tubing
Equipment:
Ambrell 3.5kW induction heating system equipped with a remote workhead containing one capacitor equaling 1.25 μF
An induction heating coil designed and developed specifically for this application.
Materials:
Tantalum tubing 0.13 in (330.2 mm) diameter with tungsten and tantalum powdered material
quartz support tube
quartz container
nitrogen gas.
Temperature:
4172 °F (2300 °C)
Frequency:
162 kHz
Testing:
A four-urn helical coil is used for the sintering process. Power is applied for thirty minutes under a nitrogen flooding atmosphere and temperature is held at 4172 °F (2300 °C). The tungsten successfully sinters, the tantalum does not.
Benefits:
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More consistent structure
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Create high heat intensity very quickly
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Energy efficient & environmentally friendly
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