The Al-Co-Nd isothermal section at 500 °C has been investigated in the whole composition range by means of x-ray diffraction, optical and scanning electron microscopy and electron probe microanalysis. The following ternary phases have been identified or confirmed: τ 1 -Nd 4 CoAl ( cF 96-Gd 4 RhIn), τ 2 -NdCo 2 Al 8 ( oP 44-CeFe 2 Al 8 ), τ 3 -NdCo 3 Al 11 (unknown), τ 4 -Nd 2 Co 3 Al 9 ( oS 56-Y 2 Co 3 Ga 9 ) τ 5 -Nd 5 Co 2 Al 2 (unknown), τ 6 -Nd 2 Co 6 Al 19 ( mS 108 U 2 Co 6 Al 19 ), τ 7 -Nd 7 Co 6 Al 7 ( tP 40-Pr 7 Co 6 Al 7 ), τ 8 -Nd 2 Co 2 Al ( oI 10-W 2 CoB 2 ), τ 9 -Nd 13 Co 14− x Al 4+ x (0 ≤ x ≤ 0.7, oS 28-W 3 CoB 3 ). The complex system of phase equilibria linking the large number of binary and ternary Al-Co-Nd phases at 500 °C has been completely determined. The general characteristics of the section have been discussed in comparison with those of other Al-Co-R systems.

中文翻译：

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Al-Co-Nd 三元体系的 500 °C 等温截面

已经通过 X 射线衍射、光学和扫描电子显微镜以及电子探针微量分析在整个成分范围内研究了 500°C 下的 Al-Co-Nd 等温截面。以下三元相已被鉴定或确认：τ 1 -Nd 4 CoAl ( cF 96-Gd 4 RhIn), τ 2 -NdCo 2 Al 8 ( oP 44-CeFe 2 Al 8 ), τ 3 -NdCo 3 Al 11 (未知), τ 4 -Nd 2 Co 3 Al 9 ( oS 56-Y 2 Co 3 Ga 9 ) τ 5 -Nd 5 Co 2 Al 2 (未知), τ 6 -Nd 2 Co 6 Al 19 ( mS 108 U 2 Co 6 Al 19 ), τ 7 -Nd 7 Co 6 Al 7 ( tP 40-Pr 7 Co 6 Al 7 ), τ 8 -Nd 2 Co 2 Al ( oI 10-W 2 CoB 2 ), τ 9 -Nd 13 Co 14− x Al 4+ x (0 ≤ x ≤ 0.7, oS 28-W 3 CoB 3 )。已经完全确定了在 500 °C 下连接大量二元和三元 Al-Co-Nd 相的复杂相平衡系统。