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Information × Registration Number 0217U002850, 0117U004352 , R & D reports Title Features of reactionary synthesis of heteromodular of ceramic composite popup.stage_title Head Popov Alex, Registration Date 13-12-2017 Organization The scientific and traning center "Physical and chemical material science" of the National Academy of Sciences of Ukraine. popup.description2 The object of research of work were features of chemical kinetics of formation of refractory phases at the hot pressing of powder-like mixture of carbides of titan and coniferous forest. Purpose: study of kinetics of exothermic cooperation between the carbides of titan and coniferous forest and connection of features of reactionary process with the basic stages of compression and forming of structure of гетеромодульних of composition materials. Methods of researches : the x-rayed diffractometry, electronic and optical microscopy, energydispersible analysis. 1.It is shown that kinetics of compression of stoichiometrical smixture of powders of carbides of titan and borum during hot-pressed at temperatures 1200 - 1800 С and pressure of 30МПа coincides with kinetics of flowing in the system of physical and chemical cooperation that is accompanied by disappearance of initial phases and formation of submicrometer grains of diborid titanium and graphite.2. The emergence of new phase nuclei in the places of intergranular contact, together with a decrease in the amount of precursor material, leads to a significant increase in the mobility of the ceramic charge and the intensification of the material seal, which explains the possibility of obtaining unpaved samples of refractory materials of the TiB2-C system (the melting point exceeds 3000 С) at a temperature 1800 C for 16 minutes. Product Description popup.authors Когутюк Павло Петрович Попов Олексій Юрійович popup.nrat_date 2020-04-02 Close