Microstructure Observation and Nanoindentation Size Effect Characterization for Micron-/Nano-Grain TBCs | |
Liu, HY3; Wei YG(魏悦广)3; Liang LH(梁立红)1; Wang YB(王颖彪)2; Song JR(宋晶如)2; Long, H3; Liu, YW3 | |
刊名 | COATINGS |
2020-04-01 | |
卷号 | 10期号:4页码:12 |
关键词 | micron- nano-grain coatings microstructure nanoindentation size effect trans-scale mechanics theory |
ISSN号 | 2079-6412 |
DOI | 10.3390/coatings10040345 |
通讯作者 | Wei, Yueguang(weiyg@pku.edu.cn) ; Liang, Lihong(lianglh@mail.buct.edu.cn) |
英文摘要 | 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. |
分类号 | 二类 |
资助项目 | 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] |
WOS关键词 | THERMAL BARRIER COATINGS ; IN-FLIGHT BEHAVIOR ; MECHANICAL-PROPERTIES ; ZIRCONIA COATINGS ; SHOCK RESISTANCE ; ELASTIC-MODULUS ; YOUNGS MODULUS ; YTTRIA ; HARDNESS ; EVOLUTION |
WOS研究方向 | Materials Science |
语种 | 英语 |
WOS记录号 | WOS:000534630600042 |
资助机构 | National Natural Science Foundation of China |
其他责任者 | Wei, Yueguang ; Liang, Lihong |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/82081] |
专题 | 力学研究所_非线性力学国家重点实验室 |
作者单位 | 1.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China; 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 3.Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China; |
推荐引用方式 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. |
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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