| 氧化铝纳米片的气相合成及其力学性能 |
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| 引用本文： | 龙丽珍,谢亚,黄小林,刘新利,王世良,贺跃辉,赵中伟. 氧化铝纳米片的气相合成及其力学性能[J]. 粉末冶金材料科学与工程, 2011, 0(6): 864-869 |
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| 作者姓名： | 龙丽珍 谢亚 黄小林 刘新利 王世良 贺跃辉 赵中伟 |
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| 作者单位： | 中南大学物理科学与技术学院;中南大学粉末冶金国家重点实验室;中南大学冶金科学与工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(50825102,50804057,51074188,51071178,50721003,50823006);中南大学博士后基金资助项目 |
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| 摘 要： | 采用Al片和SiO2粉末为原料,以H2为保护气氛,通过气相沉积方法合成Al2O3纳米片.采用XRD、SEM、TEM和EDS等分析表征手段研究合成的Al2O3纳米片的物相组成、显微形貌和微区成分.结果表明:合成的Al2O3纳米片具有光滑平整的表面,厚度为100～300nm,具有完好的菱方六面体结构.通过纳米压痕仪对合成的...
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| 关 键 词： | 氧化铝 纳米片 气相沉积 纳米压痕 力学性能 |
Vapor-phase synthesis and mechanical properties of Al2O3 nanosheets |
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| LONG Li-zhen,XIE Ya,HUANG Xiao-lin,LIU Xin-li,WANG Shi-liang,HE Yue-hui,ZHAO Zhong-wei. Vapor-phase synthesis and mechanical properties of Al2O3 nanosheets[J]. materials science and engineering of powder metallurgy, 2011, 0(6): 864-869 |
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| Authors: | LONG Li-zhen XIE Ya HUANG Xiao-lin LIU Xin-li WANG Shi-liang HE Yue-hui ZHAO Zhong-wei |
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| Affiliation: | 1.School of Physics Science and Technology,Central South University,Changsha 410083,China; 2.State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China; 3.School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | Al2O3 nanosheets were synthesized by vapor-deposition process using Al pieces and SiO2 powders as raw materials in H2 atmosphere.The morphology,chemical composition,and microstructure of the synthesized Al2O3 nanosheets were characterized by XRD,SEM,TEM and EDS.The results reveal that the synthesized Al2O3 nanosheets have a plane-shaped and smooth surface with a thickness of 100～300 nm and a well-defined rhombohedral structure.The hardness and the elastic modulus of the resultant Al2O3 nanosheets were obtained from the curve of load versus indentation displacement by Oliver-Pharr method.The research results show that the Al2O3 nanosheets have a hardness value of 26±5 GPa,a little more than the bulk single crystal Al2O3,and have a elastic modulus of 249±32 GPa,amounting to 55% of the bulk single crystal Al2O3. |
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| Keywords: | Al2O3 nanosheets vapor-deposition nanoindentation mechanical property |
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