A thermodynamic model for solid state amorphization: Application to Ni-Ti multilayers of different microstructures

被引：0

作者：

Bottger, A ^{[1
]}

Benedictus, R ^{[1
]}

Mittemeijer, EJ ^{[1
]}

机构：

[1] Delft Univ Technol, Mat Sci Lab, NL-2628 AL Delft, Netherlands

来源：

POLYCRYSTALLINE THIN FILMS - STRUCTURE, TEXTURE, PROPERTIES AND APPLICATIONS III | 1997年 / 472卷

关键词：

D O I：

10.1557/PROC-472-167

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

On the basis of an assessment of both the phase-formation energies and the energies of interfaces and grain boundaries the driving force for solid state amorphization (SSA) in crystalline Ni-crystalline Ti and amorphous Ni-crystalline Ti multilayers was calculated. II followed that the structure of the interfaces and grain boundaries, and thus their energies is of crucial importance for the occurrence (or not) of SSA. The SSA behaviour of the two types of Ni-Ti multilayers upon annealing was investigated using X-ray diffraction and (high resolution) transmission electron microscopy. The crystalline Ni-crystalline Ti multilayers showed SSA at both the Ni-Ti interfaces and the Ti grain boundaries. The amorphous Ni-crystalline Ti multilayers exhibited SSA al the Ti grain boundaries only. These observations agree with the predictions from the thermodynamic model.

引用

页码：167 / 172

页数：6