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首页> 外文期刊>Materials Transactions >Preparation and Thermal Stability of Bulk Amorphous Pd_40Cu_30Ni_10P_20 Alloy Cylinder of 72 mm in Diameter
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Preparation and Thermal Stability of Bulk Amorphous Pd_40Cu_30Ni_10P_20 Alloy Cylinder of 72 mm in Diameter

机译：直径为72 mm的大块非晶Pd_40Cu_30Ni_10P_20合金圆柱体的制备和热稳定性

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摘要

The glass-forming ability of a Pd_40Cu_30Ni_10P_20 alloy was found to increase significantly by B_2O_3 flux treatment, as is evidenced by the decrease in the critical cooling rate from 1.57 K/s in the non-fluxed state to 0.100 K/s in the fluxed state. The flux treatment also causes the extension of the supercooled liquid region by the increase in the onset tempera- ture of crystallization (Tx). The effect of the flux treatment is presumably due to the increase in the thermal stability of the supercooled liquid by the suppression of heterogeneous nucleation. The critical cooling rates in the non-fluxed and fluxed states for a Pd_40Ni_40P_20 alloy are measured to be 128 and 0.167 K/s, respectively, both of which are larger than those for the Pd-Cu-Ni-P alloy.
机译：通过B_2O_3助熔剂处理，发现Pd_40Cu_30Ni_10P_20合金的玻璃形成能力显着提高，这从临界冷却速率从非助熔状态的1.57 K / s降低到助熔状态的0.100 K / s得以证明。 。助熔剂处理还会通过增加结晶开始温度（Tx）来引起过冷液体区域的扩展。焊剂处理的效果大概是由于通过抑制异相成核而提高了过冷液体的热稳定性。 Pd_40Ni_40P_20合金在非助焊剂和助焊剂状态下的临界冷却速率分别为128和0.167 K / s，两者均比Pd-Cu-Ni-P合金的冷却速率大。

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