a. Persons in Charge of the group
Dra. María Andrea Camerucci
Dra. Analía G. Tomba Martinez
- To develop ceramic materials with different porous microstructures by controlling novel colloidal and non-contaminating processing.
- To study the forming of ceramic materials by 3D-inject printing technology.
- To evaluate the mechanical behaviour of ceramic materials as function of relevant variables (compositionals, microstructurals, processing, etc), at room and high temperatures.
- To study the chemical and mechanical wear of refractory concretes and bricks in near-service conditions.
c. Description of the projects in execution
- Development of mullite and cordierite materials, macro-porous and macro-cellular (foams) for using as lightweight structural materials and thermal insulating from the study of novel colloidal processing methods of relative low cost and non-contaminating. In the first case, native or physically modified starches are used as a consolidator/binder agent of the ceramic particles and a pore former after consolidation by burn out at high temperature, and alternative consolidation routes to the conventional route which include the pre-gelling of the starch. Materials with cellular microstructures are obtained by foaming and thermo-gelling the aqueous ceramic suspension with protein (serum bovine albumin). In both types of materials, the mechanical and thermal behaviour as a function of temperature is studied in relation to the developed porous microstructures.
- Development of macro-cellular ceramics based on silicon oxicarbide (SiOC) with potential applications as thermal protectors or solar energy receivers by 3D-inject printing technology. The materials are processed by using silsesquioxanes functionalized with organic reactive groups as consolidator agents and hybrid ceramic precursors together with pore formers and inorganic components as reactive or filler material.
- Study of the mechanical wear of oxide-C refractories for steelmaking use (MgO-C and Al2O3-MgO-C) in near-service conditions (high temperature). It is carried out by stress-strain curves testing, including the analysis of fracture and deformation mechanisms. This research is developed in close relationship with industry demands.
- Study of the corrosion of refractories (concretes and bricks) by gases and liquid slags. It is focused on the oxidation of refractories by oxygen when atmospheres with different content of this agent are used, and the wear by seelmaking slags, both in high temperatures conditions. The approach to these problems involves the use of specific thermodynamic tools, in view of understand the reaction mechanismos.
Macro-cellular green microstructure of mullite-BSA Porous green mullite microstructure obtained by pre-gelling an aqueous
|Al2O3-MgO-C refractory for steelmaking use. Slag corrosion of Al2O3-MgO-C refractory.|
Dra. María Andrea Camerucci