ON THE CE-CU-SN SYSTEM

The literature data concerning the ternary Ce-Cu-Sn system (and the bi naries involved) are briefly summarized. The results previously obtain ed in the experimental investigation of the same system are then prese nted. A partial description of the liquidus has now been obtained; thi s is discussed in comparison with the isothermal section at 400 degree s C. The invariant equilibria (and the corresponding Scheil reaction s cheme) formed in the Ce-Ce5Sn4-CeCuSn-CeCu4 region are especially desc ribed. X-ray diffraction, optical microscopy, scanning electron micros copy, and electron probe microanalysis, DTA, and differential scanning calorimetry have been used.