ОПРЕДЕЛЕНИЕ АДГЕЗИОННОЙ ПРОЧНОСТИ Mo-Ti-N И Mo-Сu-N ПОКРЫТИЙ НА УСТАНОВКЕ «СКРЕТЧ-ТЕСТЕР»

The new «scratch-tester» device for measurement of adhesion strength of coatings is presented. The device has a number of advantages as compared with known analogues – the expanded range of investigated sample sizes and more simple procedure of sample positioning, more precise measurement of scratching length, additional manner of registration of coating destruction or tearing off instant on the base of friction force. The device was used for investigation of Mo-Ti-N and Mo-Сu-N coatings on carbide cutting insert. It was found that Мо-Ti-N coatings have five times greater adhesion strength as compared with MoCu-N coatings.Разработана установка («скретч-тестер») для определения адгезионной прочности покрытий. Установка имеет ряд преимуществ по сравнению с известными аналогами – расширенный диапазон размеров исследуемого образца и более простая процедура его позиционирования, более точное измерение длины скрайбирования, дополнительный способ регистрации момента разрушения или отрыва покрытия по силе трения. Установка использована для исследования покрытий Mo-Ti-N и Mo-Сu-N на твердосплавных пластинах, и установлено, что покрытия Мо-Ti-N имеют в пять раз большую адгезионную прочность, чем покрытия Mo-Cu-N.

MEASUREMENT OF ADHESION STRENGTH OF Mo-Ti-N AND Mo-Сu-N COATINGS USING «SCRATCH-TESTER» DEVICE

The new «scratch-tester» device for measurement of adhesion strength of coatings is presented. The device has a number of advantages as compared with known analogues – the expanded range of investigated sample sizes and more simple procedure of sample positioning, more precise measurement of scratching length, additional manner of registration of coating destruction or tearing off instant on the base of friction force. The device was used for investigation of Mo-Ti-N and Mo-Сu-N coatings on carbide cutting insert. It was found that Мо-Ti-N coatings have five times greater adhesion strength as compared with MoCu-N coatings

Study of strange matter production in the heavy ion collisions at NUCLOTRON

It is proposed to install an experimental setup in the fixed-target hall of the Nuclotron with the final goal to perform a research program focused on the production of strange matter in heavyion collisions at beam energies between 2 and 6 A GeV. The basic setup will comprise a large acceptance dipole magnet with inner tracking detector modules based on double-sided Silicon micro-strip sensors and GEMs. The outer tracking will be based on the drift chambers and straw tube detector. Particle identification will be based on the time-of-flight measurements. This setup will be sufficient perform a comprehensive study of strangeness production in heavy-ion collisions, including multi-strange hyperons, multi-strange hypernuclei, and exotic multi-strange heavy objects. These pioneering measurements would provide the first data on the production of these particles in heavy-ion collisions at Nuclotron beam energies, and would open an avenue to explore the third (strangeness) axis of the nuclear chart. The extension of the experimental program is related with the study of in-medium effects for vector mesons decaying in hadronic modes. The studies of the NN and NA reactions for the reference is assumed