Gd-Co-Cu三元系合金相图

Gd-Co-Cu三元系Gd≤34.8wt％合金相图的室温截面已经用X射线分析法测定出来。它包括五个单相区:Cu(以下简称α),Co(以下简称β),Gd₂Co₁₇(以下简称δ),GdCu₆(以下简称γ)和Gd(Co_1-xCu_x)₅(以下简称θ);七个二相区:β+δ,α+β,δ+θ,θ+γ,γ+α,θ+α,β+θ;三个三相区:α+β+θ,α+θ+γ和β+θ+δ。没有发现新相。Cu 关键词：

A PHASE DIAGRAM OF THE ALLOYS OF THE TERNARY SYSTEM OF GADOLINIUM-COBALT-COPPER

The phase diagram of the ternary Gd-Co-Cu system with Gd content 34.8 wt% at room temperature has been determined by X-ray diffraction.The isothermal section was found to consist of five singlephase regions (i. e. α, σ,δ,γ and θ),seven two-phase regions (i. e. α+β, β+δ,δ+θ,θ+γ,γ+α,θ+α and σ+θ) and three three-phase regions (i.e.α+β+θ,α+θ+γ and β+θ+δ). No new phase has been observed. X-ray analysis showed that maximum solubility of Cu in Co is about 4wt% and maximum solubility of Gd in β-phase is about 3wt%.