BaTiO3 films for multilayer devices by tape casting

The diversity of the applicational scope of modern printed electronics relentlessly requires the improvement of operational properties simultaneously with reducing the overall dimensions of devices. One of the most effective ways to overcome this major obstacle is the reduction of functional layers thickness in respect to the size of the device. In the present article, we are discussing a simple way of practical implementation of miniaturization concept through the application of a well-known high-productive industrial method of tape casting for obtaining thin nanostructured ceramic layers based on BaTiO3 nanopowders for MLCC. Using of nanosized powders per se imply a new approach of developing suspensions with suitable rheology for tape casting. We demonstrate, that a length of polymer molecule defines the size of floccules and therefore influences the thickness and surface quality of tape casted films. A certain nanopowder/polymer ratio contributes to the formation of the tapes with the surface roughness comparable with the size of one nanoparticle (20-25 nm). Moreover, it was established that developed suspensions are extremely sensitive to temperature changes. Lowering the temperature significantly affects the flow character of suspension and thus the thickness of casted tapes. Considering this fact, we propose an effective self-developed pre-cooling method of nanopowder suspension casting, which allows obtaining extremely thin and smooth tapes with a thickness of less than 1 µm and surface roughness of 20–25 nm by tape casting method.

Development of manufacturing technology of nanostructured ceramic choke

Currently, ceramic chokes are used for the adjustment of fluid discharge (gas) in the structures of production trees in oil wells of oil-gas production departments. The metals, plastic masses and other structural materials are used for the manufacturing. It was defined that compared to the other details of production tree the resource of these chokes are significantly less. For the increase of their operational life as the material the usage of nanostructured chokes, the manufacturing technology and the application results are offered. With the purpose of wear resistance increase of chokes, the manufacturing technology was improved and nanostructured chokes usage recommended. Nanostructured chokes were tested in 386 wells overall and showed high results.

Polymer-assisted synthesis and applications of hydroxyapatite (HAp) anchored nitrogen-doped 3D graphene foam-based nanostructured ceramic framework

Hydroxyapatite anchored nitrogen-doped three-dimensional graphene (HAp-N3DG) skeletal network (foam) based nanostructured ceramic framework (CF) was developed through a polymer-assisted solvothermal route.

Advances in the Field of Nanostructured Ceramic Composites

In recent years, the production of ceramic composites having nanosized features is receiving increasing attention, as they demonstrated enhanced mechanical and/or functional performances as respect to conventional micronic materials [...]

Iron oxide-based nanostructured ceramics with tailored magnetic and mechanical properties: development of mechanically robust, bulk superparamagnetic materials

A novel routine is developed to produce nanostructured ceramic-based composites with enhanced mechanical properties and tailored magnetic behavior.