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arXiv · 1709.06843

ScPd2Al3 New Polymorphic Phase in Al-Pd-Sc System

Jiří Pospíšil·Yoshinori Haga·Kunihisa Nakajima·Norito Ishikawa·Ivana Císařová·Naoyuki Tateiwa·Etsuji Yamamoto·Tomoo Yamamura
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Abstract

We have discovered a new compound of the composition ScPd2Al3 crystallizing in unknown structure type. Moreover, ScPd2Al3 reveals polymorphism. We have found an orthorhombic crystal structure at room temperature and a high temperature cubic phase. The polymorphic phases are separated by a reversible first order transition at 1053°C with a hysteresis of 19°C. ScPd2Al3 exists as a very stable intermetallic phase just in the vicinity of the icosahedral quasicrystal Tsai-type i-phase Al54Pd30Sc16.

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Jiří Pospíšil, Yoshinori Haga, Kunihisa Nakajima, Norito Ishikawa, Ivana Císařová, Naoyuki Tateiwa, Etsuji Yamamoto, Tomoo Yamamura. 2017-09-20. ScPd2Al3 New Polymorphic Phase in Al-Pd-Sc System. https://doi.org/10.1016/j.ssc.2017.09.001

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