Multi-scale characterization of surface blistering morphology of helium irradiated W thin films

被引：2

作者：

Yang, J. J. ^{[1
]}

Zhu, H. L. ^{[1
]}

Wan, Q. ^{[2
]}

Peng, M. J. ^{[1
]}

Ran, G. ^{[3
]}

Tang, J. ^{[1
]}

Yang, Y. Y. ^{[1
]}

Liao, J. L. ^{[1
]}

Liu, N. ^{[1
]}

机构：

[1] Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064, Sichuan, Peoples R China

[2] China Acad Engn Phys, Inst Struct Mech, Mianyang 621900, Sichuan, Peoples R China

[3] Xiamen Univ, Sch Energy Res, Xiamen 361005, Fujian, Peoples R China

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2015年 / 358卷

基金：

中国国家自然科学基金;

关键词：

Surface morphology; Irradiation; Thin film; Multi-scale; ION IRRADIATION; TUNGSTEN; STRESS;

D O I：

10.1016/j.nimb.2015.06.010

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Surface blistering morphologies of W thin films irradiated by 30 keV He ion beam were studied quantitatively. It was found that the blistering morphology strongly depends on He fluence. For lower He fluence, the accumulation and growth of He bubbles induce the intrinsic surface blisters with mono-modal size distribution feature. When the He fluence is higher, the film surface morphology exhibits a multi-scale property, including two kinds of surface blisters with different characteristic sizes. In addition to the intrinsic He blisters, film/substrate interface delamination also induces large-sized surface blisters. A strategy based on wavelet transform approach was proposed to distinguish and extract the multi-scale surface blistering morphologies. Then the density, the lateral size and the height of these different blisters were estimated quantitatively, and the effect of He fluence on these geometrical parameters was investigated. Our method could provide a potential tool to describe the irradiation induced surface damage morphology with a multi-scale property. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：124 / 130

页数：7

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