Influence of grain boundary modifier on the strength size-dependence displayed by complex-shaped nanocrystalline nickel pillars

被引：4

作者：

Seo, Brandon B. ^{[1
]}

Gu, Junhua ^{[1
]}

Jahed, Zeinab ^{[2
]}

Tsui, Ting Y. ^{[1
,2
,3
]}

机构：

[1] Univ Waterloo, Dept Chem Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada

[2] Univ Waterloo, Dept Mech & Mechatron Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada

[3] Univ Waterloo, Waterloo Inst Nanotechnol, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada

来源：

THIN SOLID FILMS | 2017年 / 621卷

基金：

加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

Nanoindentation; Nanocrystalline; Size effect; Nickel; Strength; ELECTROLESS COPPER-DEPOSITS; CROSS-SECTIONAL GEOMETRIES; MECHANICAL-PROPERTIES; COMPRESSIVE BEHAVIOR; DEFORMATION-BEHAVIOR; MEDIATED PLASTICITY; MICROSTRUCTURE; SULFUR; SCALE; NI;

D O I：

10.1016/j.tsf.2016.12.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Size-dependent softening characteristics of electrodeposited solid core, hollow, C-shaped, and x-shaped nano crystalline (nc) nickel pillars with outer diameters of similar to 520 nm were investigated by using uniaxial micro compression techniques. Flow stress results show that only complex-shaped pillars with an average grain size of similar to 9.4 nm prepared with saccharine containing electrolytes soften with decreasing sample sizes and volume to -surface area ratios. Interestingly, large grain (similar to 18.2 nm) specimens prepared with saccharine-free electrolytes do not exhibit this softening behavior. Size-dependent softening may be due to the enhanced grain boundary mediated deformation in the small grain pillars caused by segregation of the electrolyte additives at the grain boundaries. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：178 / 183

页数：6

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