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Information × Registration Number 0217U006626, 0112U002296 , R & D reports Title Development of physical and technological bases of microwave synthesis of composites on the basis of components with reciprocal solubility, studying of their electrotechnical properties and development of new oxide functional ceramics. popup.stage_title Head Petrovsky Vitaly; Skorokhod Valery, Registration Date 15-12-2017 Organization Frantzevich Insitute for Materials Science Problems of the Ukranian National Academy of Sciences popup.description2 Report at R&D project: 281 pages, 110 pictures, 37 tables, 232 sources Task of project- development of engineering bases of microwave sintering of composites from component with mutual solubility, studying their electrical properties and building the new oxide ceramic functional materials. In project has been developed the scientific and engineering basic for managing of both phase and structural transformation for manufacturing new type of cathodes with high level of emission properties also manufacturing during microwave heating of powder ceramic materials with predeterminated level of properties. Also has been determinate the principal difference of diffusive mass transfer in contact area for two types of contact materials: Cr2O3 and Al2O3+7%Y-TZP during heating at temperature 1973K for causes both microwaves and typical processes. At microwave heating the diffusive input of ion Cr3+ into Al2O3 is increase along of boundary of particles. This fact is correlated with quantity of volume concentration of particles boundary in Al2O3+7%Y-TZP. Has been shown what during microwave sintering it is increasing the permeability of particles boundary in Al2O3 and respectively mass transfer via particles boundary with building the YAG phase. With using the microwave heating has been achieved high density beta silicon nitride ceramic (97-99%) with additive Yb2O3 and Y2O3 at high level of properties: micro hardness about Hv=22.6 and 19.5 and K1c 9.5-8.1 MPam1/2 respectively Product Description popup.authors Бродніковська Ірина Володимирівна Гетьман Ольга Іванівна Кириленко Катерина Всеволодівна popup.nrat_date 2020-04-02 Close