Phase equilibria in the quasi-ternary system Cu₂S-HgS-SnS₂ were studied by physico-chemical analysis methods on 152 alloys that were synthesized by direct single-temperature method. Phase diagrams of the quasi-binary system Cu₂S-HgS, six vertical sections (Cu₂S-Cu₂HgSnS₄, Cu₂SnS₃-HgS, Cu₂HgSnS₄-SnS₂, Cu₂Sn₄S₉-Cu₂HgSnS₄, Cu₄SnS₄-Cu₂HgSnS₄, A–B (A—40 mol.% HgS, 60 mol.% Cu₂S; B—40 mol.% HgS, 60 mol.% SnS₂), liquidus surface projection, and isothermal section at 670 K were investigated. The coordinates of eutectic points were determined: 59 mol.% HgS, 983 K (in the Cu₂S-HgS system); 73 mol.% Cu₂S, 1060 K (at the Cu₂S-Cu₂HgSnS₄ section); 18 mol.% HgS, 1113 K and 88 mol.% HgS, 1035 K (at the Cu₂SnS₃-HgS section); 83 mol.% SnS₂, 1021 K (at the Cu₂HgSnS₄-SnS₂ section).

通过理化分析方法对直接单温法合成的152种合金进行了准三元体系Cu ₂ S-HgS-SnS _2的相平衡研究。准二元体系Cu ₂ S-HgS的相图，六个垂直截面（Cu ₂ S-Cu ₂ HgSnS ₄，Cu ₂ SnS ₃ -HgS，Cu ₂ HgSnS ₄ -SnS ₂，Cu ₂ Sn ₄ S ₉ -Cu ₂ HgSnS ₄，Cu ₄ SnS ₄ -Cu ₂ HgSnS ₄，A–B（A–40摩尔％HgS，60摩尔％Cu ₂ S； B–40摩尔％HgS，60摩尔％SnS ₂），液相线表面投影和在670 K下的等温截面进行了研究。确定共晶点的坐标：59mol。％的HgS，983K（在Cu ₂ S-HgS系统中）；和。73 mol。％Cu ₂ S，1060 K（在Cu ₂ S-Cu ₂ HgSnS ₄截面）; 18 mol％HgS，1113 K和88 mol％HgS，1035 K（在Cu ₂ SnS ₃ -HgS截面）; 83摩尔％的SnS ₂，1021 K（在将Cu ₂ HgSnS ₄ -SnS ₂部分）。