THERMODYNAMIC STUDY OF THE NICKEL ADDITION IN ZINC HOT-DIP GALVANIZING BATHS

被引：0

作者：

Pistofidis, N. ^{[1
]}

Vourlias, G. ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece

来源：

7TH INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION VOLS 1 AND 2 | 2009年 / 1203卷

关键词：

zinc; hot-dip galvanizing; nickel; Gibbs free energy; Redlich-Kister polyonyme; ALLOYING ELEMENTS; COATINGS; BEHAVIOR; SYSTEM;

D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A usual practice during zinc hot-dip galvanizing is the addition of nickel in the liquid zinc which is used to inhibit the Sandelin effect. Its action is due to the fact that the zeta (zeta) phase of the Fe-Zn system is replaced by the T (tau) phase of the Fe-Zn-Ni system. In the present work an attempt is made to explain the formation of the T phase with thermodynamics. For this reason the Gibbs free energy changes for T and ( phases were calculated. The excess free energy for the system was calculated with the Redlich-Kister polyonyme. From this calculation it was deduced that the Gibbs energy change for the tau phase is negative. As a result its formation is spontaneous.

引用

页码：837 / 839

页数：3

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