Preparation of Metallic Tungsten. G. ERHARD. (Metallurgie, ix, 44I.)--This paper discusses the various methods of obtaining metallic tungsten, and the conclusion is reached that the preparation of tungstic acid is the best intermediate stage. The purified sodium "tungstate, obtained by fusion of the
Approximate melting-points of some commercial copper alloys
- Publisher
- Elsevier Science
- Year
- 1914
- Tongue
- English
- Weight
- 59 KB
- Volume
- 177
- Category
- Article
- ISSN
- 0016-0032
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โฆ Synopsis
Approximate Melting-Points of Some Commercial Copper Alloys. H.W. GILBERT and A. B. I'N'tORTON. (Amer. Inst. of Metals, Oct., I913.)--The alloys (except manganese bronze, in which case the previously made alloy was melted) were all made by melting together the constituents in the carborundum crucible in which the determinations were made. Heating and cooling curves were plotted, and the temperature at which solidification began or fusion was completed was taken as the melting-point. The composition given is that aimed at, and actual analysis, in all cases where it was made, showed that this was very nearly attained. The results are as follows :--Gun-metal .
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