MAGNETIC ALLOYS OF IRON, NICKEL, AND COBALT 447 



The intrinsic inductions, which are those parts of the inductions 

 contributed by the magnetic material, are shown in Fig. 7 for a 

 magnetizing force of 50 gauss. In the figure the triangle has been 

 turned through 120° clockwise from its position in the previous figures, 

 placing the iron-cobalt alloys in the back of the diagram. For this 



Fig. 8 — Intrinsic inductions for annealed alloys at // = 1,500. 



magnetization the 50 per cent iron-cobalt alloy is superior to any of 

 the others.^ Another interesting part of this diagram is the deep de- 

 pression at about 30 per cent nickel, in the iron-nickel plane — now the 

 right-hand front face of the diagram. This depression extends back 

 for some distance into the ternary alloys. 



^ This was also found by Ellis, Engineering and Science Series No. 16, June, 1927, 

 Rensselaer Polytechnic Institute, 



