| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1630705 | Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material | 2006 | 5 Pages |
Abstract
Hypoeutectic and hypereutectic Al2O3-ZrO2 multiphase ceramics-lined composite pipes were produced by using the gravitational separation self-propagate high-temperature synthesis (SHS) process. The microstructure of the ceramics was observed by means of SEM and EPMA. The fracture toughness of the multiphase ceramics was tested by using the Vickers indentation method. The fracture toughness of hypoeutectic Al2O3-ZrO2 multiphase ceramics is 15.96 MPa.m1/2 and that of hypoeutectic Al2O3-ZrO2 multiphase ceramics is 15.23 MPa.m1/2. The toughening mechanisms were systematically investigated by means of SEM and XRD. The results show that the bridging toughening mechanism, stress induced ZrO2 transformation toughening mechanism, and microcrack toughening mechanism are the predominant toughening mechanism.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Guibo Yu, Wen Yan, Shuhai Wang, Baoxin Su, Baolai Tan,