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Microstructure Observation and Nanoindentation Size Effect Characterization for Micron-/Nano-Grain TBCs

文献类型：期刊论文

作者Liu, HY3; Wei YG(魏悦广)3; Liang LH(梁立红)2; Wang YB(王颖彪)1; Song JR(宋晶如)1; Long, H3; Liu, YW3
刊名COATINGS
出版日期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
DOI10.3390/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
WOS关键词THERMAL BARRIER COATINGS ; IN-FLIGHT BEHAVIOR ; MECHANICAL-PROPERTIES ; ZIRCONIA COATINGS ; SHOCK RESISTANCE ; ELASTIC-MODULUS ; YOUNGS MODULUS ; YTTRIA ; HARDNESS ; EVOLUTION
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
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.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, 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.

入库方式： OAI收割

来源：力学研究所

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