Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7887954 | Ceramics International | 2018 | 33 Pages |
Abstract
This paper describes the development and fabrication of pastes suitable for screen printing process using Ti3SiC2 as the ceramic filler and ethyl cellulose as the binder. With the aim of obtaining high quality screen printed films, the influence of different amounts of Ti3SiC2 filler (20-40â¯vol%) and binder (0-5â¯vol%) on the rheological properties of the pastes was investigated. Samples with higher viscosity, such as pastes containing 30â¯vol% and 40â¯vol% Ti3SiC2 filler, regardless of the amount of ethyl cellulose, showed a higher printing quality compared to the samples with other compositions. The different paste compositions were screen printed onto paper-derived Al2O3 substrates containing 28.6 ± 4.8% open porosity and sintered for 1â¯h under an argon atmosphere at 1600â¯Â°C. X-ray diffraction (XRD) measurements and scanning electron microscopy (SEM) analysis showed that the sintered films contained TiC as a primary phase and Ti3SiC2 as a secondary phase. The partial decomposition of Ti3SiC2 after sintering can be attributed to residual carbon from the organic additives, which decreases the thermal stability of this material.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Mylena M.M. Carrijo, Hannes Lorenz, Carlos R. Rambo, Peter Greil, Nahum Travitzky,