11










 WEIGHT % W
 Ni 20 4050 60 70 75 80 85 90 95 W



 1800
 Z z 2
 L IQ ,

 1510 (W)
 1500 1510 LI. + (W)
 14 1 1500 4
 17.5 20.7 99.1
 S 1453 (NL) + (W)
 L 1200-
 :D 10o30 < T 1093

 S-100 1010<o < 1040
 ul 900-
 0-
 L (Ni)

 600.
 (Ni4W) (NiW) (NiW,)
 + + +
 300. (NiW) (NmW,) (W)


 $

 Ni. 10 20 30 40 50 60 70 80 90 W
 ATOM % W










Figure 2.3 Ni-W binary equilibrium phase diagram
 (after Moffatt, 1977).