A new look at nickel-oxygen-sulfur diagrams

A computer program is written to draw predominance area diagrams in METAL — OXYGEN — SULFUR systems. The methods used to draw these diagrams for different axes are explained. As an example, the predominance area diagram in the NICKEL — OXYGEN — SULFUR system is plotted for different axes. The results are compared to the reported diagrams in the literature and the accuracy of these diagrams are discussed.