at Google ScholarTitle data
Schafföner, Stefan ; Fruhstorfer, Jens ; Ludwig, Susann ; Aneziris, Christos G.:
Cyclic cold isostatic pressing and improved particle packing of coarse grained oxide ceramics for refractory applications.
In: Ceramics International.
Vol. 44
(2018)
Issue 8
.
- pp. 9027-9036.
ISSN 1873-3956
DOI: https://doi.org/10.1016/j.ceramint.2018.02.106
Abstract in another language
This study investigated the cold isostatic pressing of coarse grained alumina refractories applying either a cyclic pressure increase or a cycling at maximum pressure. Additionally the effects of the maximum pressure and the particle size distribution on physical, mechanical and thermomechanical properties were analyzed. The cyclic pressure increase resulted in a slightly higher apparent density and lower apparent porosity. A cycling at maximum pressure decreased the median pore size to some extent. Remarkably, an optimized particle size distribution resulted in a lower apparent porosity, lower median pore size and in a higher Young's modulus before and after thermal shock together with a slightly lower relative decrease of the Young's modulus. A higher pressing pressure which decreased the apparent porosity did not affect the Young's modulus. Thus, apparently the optimized particle size distribution improved the particle packing which was associated with a smaller median pore size. This smaller pore size increased the number of pores relative to the total porosity, which then acted as points of crack initiation and crack deflection limiting the length of propagating cracks in case of thermal shock. Thus, tailoring the pore size distribution is a promising starting point to improve the thermomechanical properties of refractories.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Ceramic Materials Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner |
| Result of work at the UBT: | No |
| DDC Subjects: | 600 Technology, medicine, applied sciences 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 25 May 2023 09:27 |
| Last Modified: | 25 May 2023 09:27 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/76190 |