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The thermal efficiency of the electric furnace


Publisher
Elsevier Science
Year
1915
Tongue
English
Weight
65 KB
Volume
180
Category
Article
ISSN
0016-0032

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ductility of tungsten so that it can be made into wire for lamp filaments. The tungsten is treated at red heat with a mixture of hydrogen and sulphur chloride. This removes any tungsten oxide, which is a cause of brittleness. The oxide is converted into sulphide, and the sulphide reduced by hydrogen