Shallow and deep nanoindentation on W/NbN nanolayers
文献类型：会议论文
| 作者 | Mao SX; Ennis BM; Wei YG(魏悦广)
|
| 出版日期 | 2007 |
| 会议名称 | IUTAM Symposium on Mechanical Behavior and Micro-Mechanics of Nanostructured Materials |
| 会议日期 | June 27, 2005 - June 30, 2005 |
| 会议地点 | Beijing, China |
| 关键词 | Alternating layers Bi-layer Bilayer period Body-centered cubic Face-centered cubic Indentation depth Metal layer MgO single crystals Nano layers Niobium nitride Rule of mixture Superhardening |
| 中文摘要 | Superlatice W(100)/NbN(100) with bilayer periods (Γ = 5.6 and 10.4 nm) was non-isostructural superlattice material and fabricated by depositing alternating layers of single crystal tungsten (W), a body-centered cubic metal, and niobium nitride (NbN), a face-centered cubic ceramic, on a MgO single crystal substrate. The lattice constants of the ceramic and metal layers are 0.439 nm and 0.315 nm respectively. The superlattice are nanocomposites that exhibit a hardness at small bilayer repeat periods which exceeds the hardness predicted by the rule of mixtures for normal composites by deep nanoindentation, while shallow nanoindentations does not demonstrate the superhardening. The results indicate that the elastic modulus does not influence the hardness of the superlattice materials. The superhardening results at deeper indentation depths is related to the nature of the interface between the layers in the superlattice materials. Normally, superlattice gains hardness by losing deformability, however, the superlattice demonstrated excellent deformability when reaching the superhardening. © 2007 Springer. |
| 收录类别 | CPCI-S ; EI |
| 会议录 | Solid Mechanics and its Applications
 |
| 语种 | 英语 |
| ISBN号 | 1402056230 |
| WOS记录号 | WOS:000245400900015 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/60303]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Mao SX,Ennis BM,Wei YG. Shallow and deep nanoindentation on W/NbN nanolayers[C]. 见:IUTAM Symposium on Mechanical Behavior and Micro-Mechanics of Nanostructured Materials. Beijing, China. June 27, 2005 - June 30, 2005. |
入库方式： OAI收割
来源：力学研究所
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