0000000000397359
AUTHOR
Ramón Torrecillas
Ceramic/metal nanocomposites by lyophilization: Spark plasma sintering and hardness
The present study is focused on the procedure of spray-drying and lyophilization techniques for the preparation of ceramic/metal nanocomposites. The results of the study at all stages are compared with those corresponding to powders conventionally dried by heating in furnace. Starting from aqueous solutions of metal salts and ceramic powders, the procedure follows with spray-drying, lyophilization, calcination of the resulting powders and subsequent Spark Plasma Sintering (SPS). X-ray diffraction analysis of the powders at different stages of the processing routes was used for phase indexing; further characterization was performed by Transmission Electron Microscopy and Energy Dispersive X-…
Ceramic/metal nanocomposites by lyophilization: Processing and HRTEM study
5 páginas, 8 figuras, 1 tabla.-- El pdf del artículo es el manuscrito de autor.
Microstructure and mechanical effects of spark plasma sintering in alumina monolithic ceramics
The specific effects of spark plasma sintering (SPS) on the creep behavior, microstructure and mechanical properties of alumina monolithic ceramic were investigated. SPS introduces strains that concentrate at grain boundaries and inhibit crack growth, resulting in an improvement in the flexural strength and fracture toughness. However, creep blocks grain boundary movements and decreases the reliability of the material. These strains can be removed by a post-sintering thermal treatment, which plays an important role in the distribution of dislocations.
Spark plasma sintering of zirconia/nano-nickel composites
Open Access