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Information × Registration Number 0214U001574, 0111U002122 , R & D reports Title Microstructure designing of Cu based powder composite materials on the production, treatment and their behavior optimization stages for utilization in switching and welding engineering popup.stage_title Head Minakova Rimma Valentunivna, Registration Date 13-03-2014 Organization Frantzevich Insitute for Materials Science Problems of the Ukranian National Academy of Sciences popup.description2 The influence of a ball mill grinding parameters on tungsten and tungste-copper structure of powders was studied. Strain accumulation is accompanied by growth microstressing followed by stabilization at 1.6 GPa. The technology of sintering samples from the composition of tungsten- copper without hydrogen developed. A mathematical model of the process of grinding in the mill of a new type of cutting mechanism for interacting particles coated abrasive was designed. Basic laws of dispergation of metal powders was found and the optimal parametres of grinding mill in the new-type mill with controlled agglomeration process was found. Patent for improving the design of grinding chamber device for mechanical grinding powder materials is declared. Hot pressing by impact in vacuum of copper - chromium and copper- tungsten composites (in the concentration range of 30-50 wt % . refractory component ) with highest physico-mechanical characteristics than the commercial counterparts was obtained. Molybdenum and copper based composites was produced and was studied. The formation of the matrix structure realised by various ways to strengthen the matrix , namely, soluble and solid dispersion hardening was allows. Introduction of special additives in molybdenum- copper composites increases their resistance to corrosion. The materials in the form of contact switching devices and electrodes for welding, brazing were tested. Due to the positive results of these tests composites Mo - Cu can find industrial application . Product Description popup.authors Бега Микола Денисович Головкова Марина Євгенійовна Крячко Лідія Олександрівна Лаптєв Анатолій Васильович Лаптєв Анатолій Васильович Толочин Олександр Іванович Толочин Олександр Іванович Хоменко Олена Вікторівна popup.nrat_date 2020-04-02 Close