| Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates |
| Li XN; Liang LH(梁立红) ; Xie JJ(谢季佳); Chen L; Wei YG(魏悦广); Liang, LH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
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| 发表期刊 | SURFACE & COATINGS TECHNOLOGY
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| 2014-11-15
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| 卷号 | 258页码:1039-1047 |
| ISSN | 0257-8972
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| 摘要 | The ceramic coatings with different thicknesses in the range of 150 mu m to 490 mu m, bonded on the same alloy substrates, were obtained by the air plasma spray method. The crack evolution and the fracture characteristics of the samples were observed synchronously under the three-point bending load using a scanning electron microscope. The results show different fracture modes for the thinner and the thicker coating samples; the multiple transverse cracks, vertical to the interface between the coatings and the substrates, in the coatings are the main fracture mode for the samples with coatings thinner than about 200 mu m, while the interface crack is the main fracture mode for the samples with coatings thicker than about 300 mu m. Different fracture modes were theoretically analyzed based on the nonlinear delamination model, and the calculated critical thickness is 255 mu m, which agrees well with the experimental result. The finite element simulations for the corresponding coatings with a series of thicknesses were carried out by introducing the interface cohesive model, and the simulations show results similar to those of the experimental observations. The study indicates that the fracture modes depend on the thickness of the coatings, and the critical thickness depends on the intrinsic properties of coatings and the interfaces between the coatings and the substrates, such as the elastic modulus, the interface strength and the fracture energy. (C) 2014 Elsevier B.V. All rights reserved. |
| 关键词 | Thickness Of Coatings
Fracture Modes
Three-point Bending
Interface Cohesive Model
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| 学科领域 | Materials Science
; Physics
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000346895000127
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| 项目资助者 | This work was supported by the National Basic Research Programs of China (No. 2012CB937500), the NSFC grants of China (Nos. 10802088, 11372318, 11023001, 11021262, 10932011 and 91216108), and the CAS/SAFEA International Partnership Program for Creative Research Teams.
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| 课题组名称 | LNM新型材料及结构的多尺度力学
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| 论文分区 | 二类/Q1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/49475
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Liang, LH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China. |
推荐引用方式
GB/T 7714 |
Li XN,Liang LH,Xie JJ,et al. Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates[J]. SURFACE & COATINGS TECHNOLOGY,2014,258:1039-1047.
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| APA |
Li XN,梁立红,谢季佳,Chen L,魏悦广,&Liang, LH .(2014).Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates.SURFACE & COATINGS TECHNOLOGY,258,1039-1047.
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| MLA |
Li XN,et al."Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates".SURFACE & COATINGS TECHNOLOGY 258(2014):1039-1047.
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