Chemical synthesis and characterization of a nanometric Fe50Ni50 alloy

被引：2

作者：

Bolsoni, R ^{[1
]}

Drago, V ^{[1
]}

Lima, E ^{[1
]}

机构：

[1] Univ Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil

来源：

METASTABLE AND NANOSTRUCTURED MATERIALS - NANOMAT-2001, PROCEEDINGS | 2002年 / 403卷

关键词：

Fe50Ni50; taenite; ultra fine particles; nanometric FeNi alloys; autocatalytic chemical reduction; chemical coprecipitation;

D O I：

10.4028/www.scientific.net/MSF.403.51

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high purity Fe50Ni50 nanometric alloy was synthesized by ultra rapid autocatalytic chemical reduction of the corresponding transition metal ions in an aqueous solution. The ratio of metal concentration in solution is preserved in the precipitated powder alloy and no metal segregation has been detected. The alloy was characterized as a chemically and structurally disordered taenite phase with a crystallite size of similar to 10 nm. A thermal treatment of 673 K/2h produce a structural relaxation with a significant shrinkage in the XRD and Mossbauer lines and a exothermic flow in the DSC signal; the crystallite size increases to 30 nm while the mean particle size remains the same at similar to 180 nm.

引用

页码：51 / 56

页数：6

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