Advanced ceramics for industry and research

Advanced ceramics are recommended for all applications where: high hardness and abrasive resistance, high toughness, low porosity, high strength, low specific gravity, good thermal shock resistance, high elastic modulus and corrosion resistance are required. These characteristics are the basis for the application of these materials in many fields like mechanical engineering, heat technology, chemical engineering and medicine.

Ceramic membranes

Ceramic membranes offer specific advantages in separation techniques: Chemical, mechanical and thermal stability Ability of steam sterilization and back flushing High abrasion resistance High fluxes High durability Bacteria resistance Possibility of regeneration Dry storage after cleaning.

Components for ceramic differential pressure sensors

We manufacture components useful in ceramic differential pressure sensors (capacitive principle). Sensors equipped with these components are suitable to measure differential pressures smaller than 1 Pa. Possible applications are devices of the medical technology, e.g. in the artificially respirating technology and in household appliance for sleep apnoea therapie. Further applications are sleep monitoring of babies to the prevention of sudden child death.

Polymer ceramics - novel inorganic-organic composites

Polymer ceramic materials are inorganic-organic composites consisting of ceramic fillers and a matrix of organic polymers. The formation of the polymer ceramics is based on the chemical interaction of reactive groups on the surface of the filler particles with functional groups of the organic polymers. Polymer ceramics combine useful properties as ceramic-like thermal stability and plastics-like high-performance and energy saving manufacturing technologies (plastic forming techniques, thermal curing up to 200�C without sintering). Two types of polymer ceramic materials have been developed. The polymer ceramics CERMOPOL® can be processed as a granulate for dry pressing. The maximum long term service temperature of CERMOPOL® is 200�C. The polymer ceramics CERMOSIL®- were developed to increase the thermal stability beyond 600�C. For this type of polymer ceramics a broad variety of plastic forming techniques like ceramic injection moulding, cold and hot extrusion can be applied besides dry pressing. Both types of polymer ceramic materials are distinguished by low shrinkage and therefore a high dimensional stability and precision. Furthermore they can be machined and recycled easily. Polymer ceramics have good electric insulation behaviour. Properties of the material and technological parameters can be especially adjusted and customized. This way systems with high electrical or thermal conductivity of with metal like thermal expansion behaviour and zero shrinkage for high precision parts could be developed. The polymer-ceramic foam CERMOPOR® can be produced based on the system CERMOSIL® by the use of suitable foaming agents. CERMOPOR®-foams are not combustible, have no toxic constituents and combine inherent bonding strength and variable processing with high temperature stability. The foaming materials can be prepared as powders, pastes, or knifing fillers. Polymer ceramic foams show low thermal conductivity and good electric insulation behaviour. Basic characteristics of the foams like volume, size and structure of the pores, the density, the mechanical, thermal and electric properties can be controlled in several ways and adapted to individual requirements

Silk screen printable pastes made of special ceramic powders

Fabrication of screen printable pastes of special ceramic powders Bottom layers as adhesion promoter for functional ceramic layers Functional ceramic layers on ceramic substrates Pastes for high temperature joining of ceramics Anti-Sublimation layers for heaters and electrodes useful in high temperature applications Ceramic layers for sensor applications Diffusion barrier layers

Ultrapure Al2O3 membranes for capacitive pressure sensors

Capacitive ceramic pressure sensor elements are useful for pressure transducers and pressure transmitters in the most diverse ranges, e.g. in chemical process engineering and vacuum engineering. The function is based on the capacitive measurement principle. On a rigid target two electrodes are applied, by those the internal forms the test electrode and the outer one the reference electrode. Over it in a small distance the common back plate electrode is on a pressure-sensitive ceramic membrane. For increased corrosion resistance and for the improvement of the relaxation behaviour of the sensor utilizing of highly pure membrane materials as Al2O3-materials (Al2O3-content ≥ 99,9 %) is necessary. Our membranes are characterized by: corrosion resistance, highest strength and extreme overload strength.