Cu-Er Phase Diagrams
Invariant Reactions
| T | reaction | x(Cu) | x(Er) | w(Cu) | w(Er) |
| C | mole/mole | mole/mole | kg/kg | kg/kg | |
| 999.8 | Liquid + Cu9Er2 => Cu5Er | 0.8372 | 0.1628 | 0.6615 | 0.3385 |
| 936.9 | Liquid + Cu9Er2 => Cu7Er2 | 0.7412 | 0.2588 | 0.5211 | 0.4789 |
| 900.1 | Liquid => Cu2Er + CuEr | 0.6559 | 0.3441 | 0.4200 | 0.5800 |
| 887.9 | Liquid => Fcc + Cu5Er | 0.9188 | 0.0812 | 0.8112 | 0.1888 |
| 887.6 | Liquid => Cu7Er2 + Cu2Er | 0.7065 | 0.2935 | 0.4777 | 0.5223 |
| 878.8 | Liquid => CuEr + Hcp | 0.3012 | 0.6988 | 0.1407 | 0.8593 |
| 836.9 | Cu7Er2 => Cu2Er + Cu9Er2 | 0.6667 | 0.3333 | 0.4318 | 0.5682 |