Sergey N.Kulkov Alexander G.Melnikov Institute of Strength Physics and Materials Science
,
The Russian Academy.of Science
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Siberian Branch
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Tomsk
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634055
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RussiaYanchun ZHOU Shengqi CHEN Zhe QU Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
110015
,
China
材料科学技术（英）
The effects of shock loading on the morphology,grain growth during heating and phase transforma- tion of ZrO_2 have been investigated.It is shown that shock loading may be efficiently used to modify submicron ceramic powders with nanocrystalline structure.After shock loading,the critical diameter of ZrO_2 particles transformed from tetragonal to monoclinic decreased due to stored strain energy. Annealing of powders resulted in reversible transformation to the tetragonal without considerable grain growth up to 1200℃.
关键词:
submicron ceramics
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