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借助三元扩散偶／电子探针分析技术测定了Ｗ－Ｎｉ－Ｃｏ三元系在１１００℃时的等混截面．它包含了：３个单相区，即ｂｃｃ（Ｗ），μ－Ｃｏ７Ｗ６和ｆｃｃ；３个两相区，即ｂｃｃ（Ｗ）＋μ－Ｃｏ７Ｗ６，ｂｃｃ（Ｗ）＋ｆｃｃ和ｆｃｃ十μ－Ｃｏ７Ｗ６；１个三相区，即ｂｃｃ（ｗ）＋ｆｃｃ＋μ－Ｃｏ７Ｗ６．
Equivalent cross section of W-Ni-Co ternary system at 1100 ℃ was determined by means of ternary diffusion / coupled probe / probe analysis. It consists of three single-phase zones, namely bcc (W), μ-Co7W6 and fcc; three two-phase zones bcc (W) + μ- Co7W6, bcc (W) + fcc and fcc ten μ-Co7W6; 1 A three-phase region, namely bcc (w) + fcc + μ-Co7W6.