Amorphous films formed through a multilayer technique in an immiscible Y-Mo system and their elastic properties

被引：5

作者：

Chen, YG ^{[1
]}

Liu, BX ^{[1
]}

机构：

[1] NANJING UNIV,NATL LAB SOLID STATE MICROSTRUCT PHYS,NANJING 210039,PEOPLES R CHINA

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1997年 / 30卷 / 04期

关键词：

D O I：

10.1088/0022-3727/30/4/002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An estimation showed that the interfacial free energy in the multilayered films in the Y-Mo system, which has a positive heat of mixing of +26 kJ mol(-1) could considerably elevate the free energy of the films to a level higher than that of the amorphous state, when a high enough fraction of interfaces was included. Y-Mo multilayered films consisting of various fractions of interfaces were accordingly designed and prepared by vapour deposition. Thermal annealing experiments showed that Y-Mo amorphous alloys were indeed formed in a relatively broad composition range, depending on the fraction of the interfaces. The structural relaxation of the formed amorphous alloys was studied by nanoindentation and it was found that Young's modulus of the amorphous alloys was lower than that of their crystalline counterparts and increased with increasing annealing temperature, thus lending support to the proposed 'free volume' model for the structure of the amorphous solids.

引用

页码：510 / 516

页数：7

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