Crystallization kinetics of the bulk-glass-forming Pd43Ni10Cu27P20 melt

被引：89

作者：

Schroers, J ^{[1
]}

Johnson, WL

Busch, R

机构：

[1] CALTECH, Keck Lab Engn Mat 138 78, Pasadena, CA 91125 USA

[2] Oregon State Univ, Dept Mech Engn, Corvallis, OR 97331 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 08期

关键词：

D O I：

10.1063/1.1289033

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The crystallization of undercooled Pd43Ni10Cu27P20 melts is studied under isothermal conditions and at constant heating and cooling rates. Investigations are carried out by fluxing the melt with B2O3 and without any fluxing material. The isothermal experiments allow us to determine the complete time-temperature-transformation diagram with a minimum crystallization time of about 200 s for the fluxed melt and about 130 s for the unfluxed Pd43Ni10Cu27P20 melt. The results of the experiments at constant cooling and heating rates are summarized in a continuous heating and cooling diagram. The critical cooling rate for the fluxed alloy is determined to be 0.09 K/s, whereas the critical heating rate is 6 K/s. For the unfluxed Pd43Ni10 Cu27P20, 0.4 and 9 K/s are found, respectively. This alloy exhibits the most sluggish crystallization kinetics of all metallic systems known so far. (C) 2000 American Institute of Physics. [S0003-6951(00)02633-4].

引用

页码：1158 / 1160

页数：3