Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates
文献类型：期刊论文
| 作者 | Wei YG(魏悦广) ; Liang, LH (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.; Li XN; Liang LH(梁立红); Xie JJ(谢季佳); Chen L
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| 刊名 | SURFACE & COATINGS TECHNOLOGY
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| 出版日期 | 2014-11-15 |
| 卷号 | 258页码:1039-1047 |
| ISSN号 | 0257-8972 |
| 关键词 | Thickness Of Coatings Fracture Modes Three-point Bending Interface Cohesive Model |
| 产权排序 | [Li, X. N.; Liang, L. H.; Xie, J. J.; Chen, L.; Wei, Y. G.] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| 英文摘要 | 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. |
| 学科主题 | Materials Science ; Physics |
| 分类号 | 二类/Q1 |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000346895000127 |
| 资助机构 | 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. |
| 公开日期 | 2015-01-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49476]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 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 | Wei YG,Liang, LH ,Li XN,et al. Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates[J]. SURFACE & COATINGS TECHNOLOGY,2014,258:1039-1047. |
| APA | 魏悦广,Liang, LH ,Li XN,梁立红,谢季佳,&Chen L.(2014).Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates.SURFACE & COATINGS TECHNOLOGY,258,1039-1047. |
| MLA | 魏悦广,et al."Thickness-dependent fracture characteristics of ceramic coatings bonded on the alloy substrates".SURFACE & COATINGS TECHNOLOGY 258(2014):1039-1047. |
入库方式： OAI收割
来源：力学研究所
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