Effect of manganese addition on sintering behavior and mechanical properties of alumina toughened zirconia |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do, 38541, Republic of Korea;2. Institute of Materials Technology, Yeungnam University, Gyeongsan, 38541, Republic of Korea;1. Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, China;2. Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, China;3. Henan Key Laboratory of High Temperature Functional Ceramics, Zhengzhou University, Zhengzhou, 450052, China;4. State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai, 200072, China;5. Zhejiang Institute of Advanced Materials, Shanghai University, Jiashan, 314100, China;1. Key Laboratory of Electronic Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, 550025, PR China;2. School of Electronic and Communication Engineering, Guiyang University, Guiyang, 550005, PR China;1. University of Science and Technology of China, Hefei, 230026, China;2. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, China;3. University of Chinese Academy of Sciences, Beijing, 100049, China;4. University of North Texas, Denton, 76201, USA;1. Dipartimento di Ingegneria Meccanica, Chimica e dei Materiali, Unità di Ricerca del Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Università degli Studi di Cagliari, 09123, Cagliari, Italy;2. Dipartimento di Scienze Chimiche, Fisiche, Matematiche e Naturali, Università degli Studi di Sassari, 07100, Sassari, Italy;3. Dipartimento di Fisica, Università degli Studi di Cagliari, 09042, Monserrato, Cagliari, Italy;4. Department of Physics and Astronomy, University of Notre Dame, Notre Dame, 46556, IN, United States |
| |
| Abstract: | The effect of MnO2 additives on the sintering behavior and mechanical properties of alumina-toughened zirconia (ATZ, with 10 vol% alumina) composites was investigated by incorporating different amounts of MnO2 (0, 0.5, 1.0, and 1.5 wt%) and sintering at various temperatures ranging from 1300 to 1450 °C. The addition of MnO2 up to 1.0 wt% improved the sintered density, hardness, flexural strength, and fracture toughness of the composite. However, the addition of 1.5 wt% MnO2 degraded the relative density, hardness, and flexural strength of the composite due to the transformation of the ZrO2 phase from tetragonal to monoclinic and grain coarsening. Optimal results were obtained with 1.0 wt% MnO2 and sintering at 1450 °C, which improved the mechanical properties (hardness: 13.5 GPa, flexural strength: 1.2 GPa, fracture toughness: 8.5 MPa m1/2) and lowered the sintering temperature compared to the conventional sintering temperature of ATZ composites (1550 °C). Thus, the ATZ composite doped with MnO2 is a promising material for structural engineering ceramics owing to its improved mechanical properties and lower sintering temperature. |
| |
| Keywords: | Alumina toughened zirconia Manganese Sintering temperature Mechanical properties Tetragonal-to-monoclinic phase transformation |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
