100 years of doped tungsten wire |
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| Authors: | P. Schade |
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| Affiliation: | HTM Consulting Berlin, Germany |
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| Abstract: | From a historical point of view, the development of the PM processing steps and tools “for making tungsten ductile” by William D. Coolidge in 1909 marks the breakthrough for the usage of tungsten filaments in the lighting industry and the beginning of the industrial era of modern Powder Metallurgy. |
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| Keywords: | Tungsten History Coolidge process Wire properties Potassium bubbles effects Light sources |
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