Mechanical properties and microstructure of Al2O3-TiC-ZrO2 nanocomposites prepared by combustion synthesis-hot pressing
文献类型：期刊论文
| 作者 | Dong, Q; Tang, Q; Li, WC |
| 刊名 | ACTA METALLURGICA SINICA
 |
| 出版日期 | 2001-12-18 |
| 卷号 | 37期号:12页码:1285-1288 |
| 关键词 | combustion synthesis-hot pressing Al2O3-TiC-ZrO2 nanocomposite mechanical property microstructure |
| ISSN号 | 0412-1961 |
| 其他题名 | Acta Metall. Sin. |
| 中文摘要 | Al2O3-TiC-ZrO2 nanocomposites were fabricated by combustion synthesis-hot pressing with the cheap reactants of TiO2, Al, C and ZrO2. The effects of ZrO2 nano-additives on the mechanical properties and microstructure of Al2O3-TiC ceramic-matrix composites were discussed. With the addition of ZrO2 nanoparticles, the dominant fracture mode of the composites changed from intergranular fracture into transgranular fracture. ZrO2 nanoparticles dispersed mainly in Al2O3 matrix. The residual stresses generated by the thermal expansion coefficient mismatch between ZrO2 particles and Al2O3 matrix induced dislocation and microcracks around the nanoparticles. And the effects of nanoparticles on the deflected propagation, nailing and blocking of the dislocation are remarkable and can be used to explain the improvement of the strength and toughness of Al2O3-TiC-ZrO2 composite. Al2O3-TiC-10ZrO(2) composite exhibits good mechanical properties with the flexural strength of 706 MPa, tile fracture toughness of 6.3 MPa.m(1/2) and the HRA hardness values of 94.4, respectively. |
| 英文摘要 | Al2O3-TiC-ZrO2 nanocomposites were fabricated by combustion synthesis-hot pressing with the cheap reactants of TiO2, Al, C and ZrO2. The effects of ZrO2 nano-additives on the mechanical properties and microstructure of Al2O3-TiC ceramic-matrix composites were discussed. With the addition of ZrO2 nanoparticles, the dominant fracture mode of the composites changed from intergranular fracture into transgranular fracture. ZrO2 nanoparticles dispersed mainly in Al2O3 matrix. The residual stresses generated by the thermal expansion coefficient mismatch between ZrO2 particles and Al2O3 matrix induced dislocation and microcracks around the nanoparticles. And the effects of nanoparticles on the deflected propagation, nailing and blocking of the dislocation are remarkable and can be used to explain the improvement of the strength and toughness of Al2O3-TiC-ZrO2 composite. Al2O3-TiC-10ZrO(2) composite exhibits good mechanical properties with the flexural strength of 706 MPa, tile fracture toughness of 6.3 MPa.m(1/2) and the HRA hardness values of 94.4, respectively. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Metallurgy & Metallurgical Engineering |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000173281800012 |
| 公开日期 | 2013-11-14 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5761]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Beijing Univ Sci & Technol, Dept Phys Chem, Beijing 100083, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Q,Tang, Q,Li, WC. Mechanical properties and microstructure of Al2O3-TiC-ZrO2 nanocomposites prepared by combustion synthesis-hot pressing[J]. ACTA METALLURGICA SINICA,2001,37(12):1285-1288. |
| APA | Dong, Q,Tang, Q,&Li, WC.(2001).Mechanical properties and microstructure of Al2O3-TiC-ZrO2 nanocomposites prepared by combustion synthesis-hot pressing.ACTA METALLURGICA SINICA,37(12),1285-1288. |
| MLA | Dong, Q,et al."Mechanical properties and microstructure of Al2O3-TiC-ZrO2 nanocomposites prepared by combustion synthesis-hot pressing".ACTA METALLURGICA SINICA 37.12(2001):1285-1288. |
入库方式： OAI收割
来源：过程工程研究所
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