The effect of cobalt, sulfur, and tellurium on the liquidus-solidus gaps of Fe-Ni-Al-Co-Ti alloys

The values of liquidus and solidus temperatures were measured for various permanent magnet alloys including Alcomax III and Hycomax II, III, and IV. The effect of sulfur on these temperatures was studied for each of the alloys, and the effect of tellurium on the temperatures for Hycomax IV was also studied. The effect of liquidus-solidus gaps on columnar crystal formation is discussed. An attempt is made to relate the values found to those obtained from equilibrium diagrams.