| Microstructure Observation and Nanoindentation Size Effect Characterization for Micron-/Nano-Grain TBCs | |
Liu, HY1; Wei YG(魏悦广)1 ; Liang LH(梁立红)2; Wang YB(王颖彪)3; Song JR(宋晶如)3; Long, H1; Liu, YW1
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| Corresponding Author | Wei, Yueguang([email protected]) ; Liang, Lihong([email protected]) |
| Source Publication | COATINGS
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| 2020-04-01 | |
| Volume | 10Issue:4Pages:12 |
| ISSN | 2079-6412 |
| Abstract | Microstructure observation and mechanical properties characterization for micron-/nano-grain thermal barrier coatings were investigated in this article. Scanning electron microscope images demonstrated that both micron-grain coating and nano-grain coating had micrometer-sized columnar grain structures; while the nano-grain coating had the initial nanostructures of the agglomerated powders reserved by the unmelted particles. The mechanical properties (hardness and modulus) of micron-/nano-grain coatings were characterized by using nanoindentation tests. The measurements indicated that the nano-grain coating possessed larger hardness and modulus than the micron-grain coating; which was related to the microstructure of coatings. Nanoindentation tests showed that the measured hardness increased strongly with the indent depth decreasing; which was frequently referred to as the size effect. The nanoindentation size effect of hardness for micron-/nano-grain coatings was effectively described by using the trans-scale mechanics theory. The modeling predictions were consistent with experimental measurements; keeping a reasonable selection of the material parameters. |
| Keyword | micron- nano-grain coatings microstructure nanoindentation size effect trans-scale mechanics theory |
| DOI | 10.3390/coatings10040345 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000534630600042 |
| WOS Keyword | THERMAL BARRIER COATINGS ; IN-FLIGHT BEHAVIOR ; MECHANICAL-PROPERTIES ; ZIRCONIA COATINGS ; SHOCK RESISTANCE ; ELASTIC-MODULUS ; YOUNGS MODULUS ; YTTRIA ; HARDNESS ; EVOLUTION |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Coatings & Films |
| Funding Project | National Natural Science Foundation of China[11890681] ; National Natural Science Foundation of China[11672301] ; National Natural Science Foundation of China[11511202] ; National Natural Science Foundation of China[11672296] ; National Natural Science Foundation of China[91860102] ; National Natural Science Foundation of China[11432014] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 二类 |
| Ranking | 3 |
| Contributor | Wei, Yueguang ; Liang, Lihong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/82082 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China; 2.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China; 3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, HY,Wei YG,Liang LH,et al. Microstructure Observation and Nanoindentation Size Effect Characterization for Micron-/Nano-Grain TBCs[J]. COATINGS,2020,10,4,:12.Rp_Au:Wei, Yueguang, Liang, Lihong |
| APA | Liu, HY.,魏悦广.,梁立红.,王颖彪.,宋晶如.,...&Liu, YW.(2020).Microstructure Observation and Nanoindentation Size Effect Characterization for Micron-/Nano-Grain TBCs.COATINGS,10(4),12. |
| MLA | Liu, HY,et al."Microstructure Observation and Nanoindentation Size Effect Characterization for Micron-/Nano-Grain TBCs".COATINGS 10.4(2020):12. |
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| Jp2020144.pdf（3719KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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