| Original Articles |
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Solidification of Undercooled Ge73.7Ni26.3 Alloy Subjected to Sputtering-Deposition of Ni Clusters |
| LIU Ri-ping1,2;JING Qin2;CAO Li-min2;ZHANG Ming1;ZHANG Fu-xiang1;ZHANG Xiang-yi1;ZHAO Jian-hua1;HE Duan-wei1;XU Ying-fan1;WANG Wen-kui1,2 |
| 1Institute of Physics, Chinese Academy of Sciences, Beijing 100080
2Institute of Materials Engineering, Yanshan University, Qinhuangdao 066004
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| Cite this article: |
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LIU Ri-ping, JING Qin, CAO Li-min et al 1998 Chin. Phys. Lett. 15 149-151 |
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Abstract Undercooled melt of Ge73.7Ni26.3 alloy sample floated on B2O3 melt was subjected to sputtering-deposition of Ni clusters on cooling to induce solidification. The initial temperature of solidification was 975 K. Its undercooling ΔT was 134 K with respect to the melting temperature of the primary phase Ge. On the cooling curve existed dual recalescences representing the transformation of the primary phase (Ge) and the eutectics (Ge+GeNi) respectively. But for the sample unsputtered, only a single exothermic peak presented on the cooling curve with the initial solidification temperature of 904K and undercooling of 205K. Careful observation of the microstructure proved that the Ge phase primarily formed in the sputtering experiment was now formed together with the formation of the eutectics in the experiment without sputtering.
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| Keywords:
81.30.Fb
83.85.-c
82.30.Nr
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Published: 01 February 1998
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| PACS: |
81.30.Fb
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(Solidification)
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83.85.-c
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(Techniques and apparatus)
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82.30.Nr
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(Association, addition, insertion, cluster formation)
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