本文用X射线粉末衍射法研究了Dy≤35.6wt-%(≤16.7at.-%)成分区域内Dy-Co-Ni三元合金系相图的室温截面.它包括5个单相区,6个双相区和4个三相区,未出现新相.
The room temperature section of the phase diagram of the ternary Dy-Co-Nisystem for Dy≤35.6 wt-% has been determined by X-ray powder diffractionmethod.The following phases were observed:five single-phase regions:α,β,Dy_2Co_(17),Dy_2Ni_(17)and DyNi_(5-5x)Co_(5x)(x≤0.33);six two-phase regions:α+β,α+Dy_2Co_(17),β+DyNi_5,β+Dy_2Ni_(17),Dy_2Co_7+Dy_2Co_(17)and DyNi_5+Dy_2Ni_(17);four three-phaseregions:α+β+Dy_2Co_(17),β+DyNi_5+Dy_2Co_(17),β+DyNi_5+Dy_2Ni_(17)and DyNi_5+Dy_2Co_7+Dy_2Co_(17).No evidence of new phase has been observed in this range.
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