Abstract
The transition temperaturesTc of quenched Hf- Rh alloys are strongly increased in the hexagonal phase by Rh, similar to the homologous systems Ti-Rh and Zr-Rh. On the other hand a stabilization of the cubic high-temperature phase by Rh has not been possible. At higher amounts of Rh(>6 at%) the intermetallic compound Hf2Rh with aTc of 1.98 °K is formed. Moreover a transition temperature of 1.73 °K is found which is probably due to the intermetallic compound HfRh. The results above are interpreted with the help of X-ray diffraction and metallurgic techniques.
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