Effect of Doped Cobalt on Performance of Tungsten Filament

Abstract:

The present article prepared tungsten wire using doped Co, sintering and stretching. By metallographic analysis and mechanical performance test, it discussed the effect of Co on the performance of the seismic tungsten filament. This article studied the effect of additive Cobalt on the ductility, recrystallization temperature and performance of organization on the aseismatic tungsten filament preparation process. It shows that, Co can purify tungsten matrix. Adding Cobalt in doped tungsten can improve the tungsten second recrystallization temperature, and reduce the temperature of plastic-brittle transition. It had a large L/W and small cold-brittleness after annealing, and its seismic performance at high temperature was effectively improved.

• Periodical: Advanced Materials Research (Volume 628)
• Pages: 187-192
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.628.187
• Online since: December 2012
• Authors: Shu Zhen Wu, Tie Hu Wang
• Keywords: Dopant, Recrystallization Temperature, Seismic Tungsten Filament, Tensile Strength

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