Foreign and domestic research results show that all seismic tungsten are doped tungsten-based added
small amount of Co or
a small amount of
Re and other elements to get a
better high-temperature ductility, and enhance the seismic
performance of
a tungsten filament. Therefore, the Research of tungsten wire must focus on the subject control to achieve synchronization, enhance tungsten's high-temperature strength, creep resistance and high temperature recrystallization to obtain better Seismic performance of the tungsten wire; on the other hand, on the basis of high-quality doped tungsten compound to add solid solution strengthening effect
of cobalt or rhenium in order to improve room temperature ductility after recrystallization.
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