Summary
The melting temperatures and microhardness of germanides of the rare-earth metals of the cerium subgroup and of yttrium were determined. The melting temperature and microhardness of lanthanum, cerium, praseodymium, and neodymium increase with increasing atomic number of the rare-earth metal and also in the series Me5Ge3→MeGe→MeGe2. The germanide phases of yttrium exhibit a different relationship: Melting temperature and microhardness attain maximum values for the phase Y5Ge3 and decrease in the series Y5Ge3→YGe→YGe2.
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Translated from Poroshkovaya Metallurgiya, No. 7 (79), pp. 51–54, July, 1969.
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Rud', B.M., Lynchak, K.A. Melting points and microhardness of germanides of the cerium-subgroup rare-earth metals and yttrium. Powder Metall Met Ceram 8, 559–561 (1969). https://doi.org/10.1007/BF00775519
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DOI: https://doi.org/10.1007/BF00775519