In this patent the one-step manufacturing process for composite ceramic heater or ceramic glow plug for diesel engines is protected. The material will be fabricated by sintering the silivcon nitride/zirconia powder mixture in the nitrogen protective athmosphere, during which zirconia will react with silicon nitride forming electrically conductive zirconium nitride.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 24429607For the company Eternit AG in Switzerland we conducted a feasibility study for manufacturing of fiber-reinforced composite geopolymer materials prepared from fly ash. We have successfully demonstrated that this secondary raw material could be used for the producton of composite panels that achieve comparable mechanical properties as panels made from fiber-cement composites.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 26189351The subject of the invention is a process of preparing colloidal carrier powder with high specific surface area for the application of a thin layer and / or nanoparticles. Due to the very large specific surface area and porosity of the carrier powder certain properties of nanoparticles, shown because of their small size, are maintained or even increased. Handling of such coloidally prepared composite particles with a high specific surface area is very easy. Carrier powder is prepared by taking advantage of AlN powder hydrolysis, where the reaction between AlN and water results in clusters of porous particles of AlOOH with high specific surface area, which can be subsequently thermally processed and particels from one of the transitional forms Al2O3, t. j. gamma-, delta-and theta-Al2O3 are obtained, without significant changes in particle morphology.
F.06 Development of a new product
COBISS.SI-ID: 24381991The basic idea is to use a pure carbon black embedment that serves as a wicking agent in the first stage of the procedure, but then burns out completely when the temperature exceeds approximately 500°C, leaving the samples free of any organic binder or contamination so that they are ready for sintering. The whole process from molded parts to fully sintered parts can be completed in a single furnace. Besides making the process shorter, the tedious and delicate operations of cleaning and transporting the fragile debinded parts after wick-debinding are avoided.
F.09 Development of a new technological process or technology
COBISS.SI-ID: 24828455The aim of this work was to develop an inorganically bonded fibre-reinforced composite that will be suitable for the production of a new generation of building elements preferably using industrial by products such as fly-ash. A concept of using the recycled fibre-cement composite materials as the fillers and fibre source for the production of fibre reinforced geopolymers was also shown.
B.04 Guest lecture
COBISS.SI-ID: 26181671