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Registration Number

0216U007146, 0111U004577 , R & D reports

Title

Improving the performance of high temperature, wear-resistant materials based on tungsten carbide and metallic nitride using pre hydrogen-thermal initial processing of powders

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Head

Skorokhod Valeriy Volodymyrovych,

Registration Date

07-04-2016

Organization

I.N.Frantsevich Institute for Probmens of Materials Sciences Ukrainian Academy of Science

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The object of study - ceramic powder materials (aluminum nitride, silicon nitride, tungsten carbide), hydrogen technology processing (HTP). Purpose - to study the effect of hydrogen heat treatment on the properties of powdered aluminum nitride, silicon carbide and tungsten products from them. Research methods - theoretical thermodynamic calculations, X-ray phase and X-ray structural analysis, infrared spectroscopy, transmission electron microscopy coupled with mikrodyfraktsiyeyu and scanning electron microscopy combined with X-ray microanalysis. Influence of HTP on the chemical composition, structure and kinetics of compaction, mechanical properties investigated powders and products from them. Shown that the powder after HTP reduced content of impurity elements (oxygen, carbon, sulfur), reduced defects and microdeformations particles. It is shown that the HTP improves crack resistance and microhardness of samples increases the value limits compressive strength and bending electrical and dielectric characteristics of the sintered samples. The resulting scientific and practical results suggest promising method use vodnevotermichnoyi initial processing of powders to improve the physical and mechanical properties of these powder products.

Product Description

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Морозов Ігор Анатолійович
Морозова Раїса Олексіївна

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2020-04-02