. Alloys of tungsten by diffusion. Fig. Fig. XI. Experiment 1. Furnace No. 2 Time 2 hours Temperature .... 1050° C Etched EF Photomicrograph . x 100 Figure X shows the dif-fusion of the tungsten be-tween the grain boundariesof the antimony. The darkband at the junction of thetwo metals is due to the un-even etching of the two me-tals. The diffusion in thiscase extended about one-eighth of an inch in from theedge of the tungsten. Experiment 2. Furnace No. 2 Time 24 hours Temperature .... 1050° C. Etched 4$ Ale. EN03 Fig. XI. shows the morecomplete diffusion, the be-ginning of which was evid
. Alloys of tungsten by diffusion. Fig. Fig. XI. Experiment 1. Furnace No. 2 Time 2 hours Temperature .... 1050° C Etched EF Photomicrograph . x 100 Figure X shows the dif-fusion of the tungsten be-tween the grain boundariesof the antimony. The darkband at the junction of thetwo metals is due to the un-even etching of the two me-tals. The diffusion in thiscase extended about one-eighth of an inch in from theedge of the tungsten. Experiment 2. Furnace No. 2 Time 24 hours Temperature .... 1050° C. Etched 4$ Ale. EN03 Fig. XI. shows the morecomplete diffusion, the be-ginning of which was evidentin Experiment 1. Here thediffusion was uniform through- 19 out the antimony, shoeing that the system has reached an equili-brium under the existing conditions. d. (Tungsten and cadmium. Experiment 1. Furnace Ho. 2 Time 1 hour Temperature .... 500° Photomicrograph . x 100 Fig. XII. shows the re-sults of the experiment. Theaction hac been practicallythe same as in the case of theantimony-tungsten, exceptthat :the higher
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