| 成型压力对PMNT多晶体取向生长的影响 |
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| 引用本文： | 赵丽丽,高峰,赵鸣,张昌松,李光耀,田长生. 成型压力对PMNT多晶体取向生长的影响[J]. 人工晶体学报, 2004, 33(3): 320-323 |
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| 作者姓名： | 赵丽丽 高峰 赵鸣 张昌松 李光耀 田长生 |
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| 作者单位： | 西北工业大学材料科学与工程学院,西安,710072;西北大学电子科学系,西安,710069;西北工业大学材料科学与工程学院,西安,710072 |
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| 基金项目： | 西北工业大学博士论文创新基金(200207);陕西省教育厅自然科学基金(HE02281)资助项目 |
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| 摘 要： | 采用添加PbO的TGG方法定向生长PMNT多晶体,研究了素坯成型压力对PMNT多晶体取向生长的影响规律.结果表明,成型压力直接影响PMNT多晶体的取向生长速度和取向程度.随着成型压力逐渐增大,PMNT多晶体的取向生长速度呈先增加后减小的趋势.低于临界成型压力(在本文实验条件下,临界成型压力为600MPa)时,随成型压力增大,PMNT多晶体的取向生长速度越来越快;高于临界成型压力时,随成型压力增大,PMNT多晶体的取向生长速度越来越慢,但是多晶体的取向程度却越来越好.
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| 关 键 词： | PMNT TGG 定向生长 压力 压电材料 |
| 文章编号： | 1000-985X(2004)03-0320-04 |
Effect of Uniaxial Pressure on the Oriented Growth of PMNT Polycrystals |
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| ZHAO Li-li. Effect of Uniaxial Pressure on the Oriented Growth of PMNT Polycrystals[J]. Journal of Synthetic Crystals, 2004, 33(3): 320-323 |
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| Authors: | ZHAO Li-li |
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| Affiliation: | ZHAO Li-li~ |
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| Abstract: | The oriented 0 67Pb(Mg_(1/3)Nb_(2/3))O_3-0 33PbTiO_3 (PMNT67/33) polycrystals were prepared by the conventional ceramic technique and the templated grain growth (TGG) method by adding the PbO addition. The effect of the uniaxial pressure on the growth of the PMNT polycrystals was investigated in detail. The experimental results show that the uniaxial pressure determines the growth rate and the oriented degree of the PMNT polycrystals when other conditions keep unchangeable. With the uniaxial pressure increasing, the growth rate of PMNT polycrystals first increases and then decreases. In this experiment, the growth rate of PMNT polycrystals increases when increasing the uniaxial pressure below 600MPa. Although the growth rate of PMNT polycrystals decreases when increasing the uniaxial pressure above 600MPa, the oriented degree of PMNT polycrystals is better and better. |
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| Keywords: | PMNT templated grain growth oriented growth pressure piezoelectric materials |
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