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物理学报. 2006, 55(1): 472-476.
doi: 10.7498/aps.55.472.
氧化锌纳米晶高压下的晶粒演化和性能
- 收稿日期: 2005-03-01
- 修回日期: 2005-03-31
- 刊出日期: 2006-01-20
English Abstract
Grain fragmentation and property modification of nanocrystalline ZnO under high pressure
- Received Date:
01 March 2005
- Accepted Date:
31 March 2005
- Published Online:
20 January 2006
Abstract: Grain fragmentation and property modification of nanocrystalline ZnO under high pressure were studied on CS-1B 6×8000 kN cubic high pressure apparatus. Grain size and microstructure of the samples have been characterized by X-ray diffraction and field emission scanning electron microscopy. The results show that the significant grain fragmentation phenomenon occurs inside the crystallites. Experimental results on hardness and the current-voltage characteristics indicate that micro-hardness of the samples after high pressure is 2.3 times that of the samples sintered at atmospheric pressure and the nonlinear current-voltage characteristics is obviously better than that of the latter.
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