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Information × Registration Number 0219U100625, 0117U000855 , R & D reports Title Development of a manufacturing technology of ceramic bearings with the self-healing effect for operation under extreme conditions of corrosive media. popup.stage_title Head Zhаlаt-Lozynskyi Ostаp B., Доктор технічних наук Registration Date 21-02-2019 Organization Institute for Problems in Materials Science popup.description2  The aim of the work is to improve a laboratory technology for the preparation of unmilled composite powder of the Si3N4 - ZrN system by optimization of every technological operation of obtaining experimental batches of powders, which are further subjected to consolidation by the spark-plasma sintering method. The optimal regime of heat treatment of Si3N4 + Zr reaction mixtures that makes it possible to obtain unmilled powders of the Si3N4 - ZrN composite material in a wide concentration range with a high reproducibility of the elemental composition in a single cycle of synthesis has been established. The technological parameters that provide the necessary contact of powders of the initial components and gas permeability for the synthesis of the Si3N4 - ZrN composite material were optimized. An investigation on the consolidation of the composite powders by the spark-plasma sintering method has been performed, due to which the choice of optimal compositions has been justified. A technology for the preparation of unmilled Si3N4 - ZrN composite powder has been developed, and a technological instruction "Powder of a Si3N4 - ZrN Composite Material" has been elaborated. Product Description popup.authors popup.nrat_date 2020-04-02 Close