Robocasting of dense yttria-stabilized zirconia structures
| Autor: | Xiangxia Wei, Ulf Garbe, Dehong Yu, Brunet Edouard, Aihong Liu, Jun Ding, Erwin Peng |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Fabrication Mechanical Engineering 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Grain size Flexural strength Mechanics of Materials visual_art 0103 physical sciences visual_art.visual_art_medium General Materials Science Cubic zirconia Ceramic Composite material 0210 nano-technology Porosity Yttria-stabilized zirconia |
| Zdroj: | Journal of Materials Science. 53:247-273 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-017-1491-x |
| Popis: | Advanced ceramic materials with complex design have become inseparable from the current engineering applications. Due to the limitation of traditional ceramic processing, ceramic additive manufacturing (AM) which allows high degree of fabrication freedom has gained significant research interest. Among these AM techniques, low-cost robocasting technique is often considered to fabricate complex ceramic components. In this work, aqueous ceramic suspension comprising of commercial nano-sized yttria-stabilized zirconia (YSZ) powder has been developed for robocasting purpose. Both fully and partially stabilized YSZ green bodies with complex morphologies were successfully printed in ambient conditions using relatively low-solid-content ceramic suspensions ( 94% of the theoretical density despite its high linear shrinkage (up to 33%). The microstructure analysis indicated that dense fully and partially stabilized YSZ with grain size as small as 1.40 ± 0.53 and 0.38 ± 0.10 μm can be obtained, respectively. The sintered partially stabilized YSZ solid and porous mesh samples (porosity of macro-pores >45%) exhibited hardness up to 13.29 GPa and flexural strengths up to 242.8 ± 11.4 and 57.3 ± 5.2 MPa, respectively. The aqueous-based ceramic suspension was also demonstrated to be suitable for the fabrication of large YSZ parts with good repeatability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink