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- W2103245855 abstract "Hard and super hard coatings of Zr-Ti-Si-N of from 2.8 to 3.5 μm thickness were fabricated using vacuum arc source with (HF) stimulation. Six series of samples with various Zr and Ti content were studied. The samples were annealed in vacuum and in air at 1200 o C. It was found that films with a high Zr and Ti content were thermally stable up to 1180 o C. At the same time, a thin oxide layer of 180 to 240nm was found in the surfaces, which protected the sample from destruction. A size of grains of a substitution solid solution (Zr, Ti)N varied from (10 - 12)nm to 25nm, but Ti concentration in the solid solution increased. In the process of annealing, hardness of the best series of samples increased from 39.6 ± 1.4GPa to 53.6GPa, which seemed to indicate that a spinodal segregation along grain interfaces was finished. Tribotechnical characteristics of coatings were measured for various contents of basic elements Zr, Ti, and Si. The work was funded by the project of NAS of Ukraine Nanomaterials, Nanotechnologies, Nanosystems. Streszczenie. Twarde i supertwarde powloki Zr-Ti-Si-N o grubości od 2,8 do 3,5 μm zostaly wytworzone wykorzystując prozniowe źrodlo luku ze stymulacją HF. Przebadano sześc serii probek o roznej zawartości Zr oraz Ti. Probki zostaly wygrzane w prozni i w powietrzu w temperaturze 1200 o C. Wykazano, ze warstwy z wysoką zawartością Zr oraz Ti byly stabilne termicznie do temperatury 1180 o C. W tym samym czasie cienka warstwa tlenku o grubości od 180 do 240nm zostala zidentyfikowana w obrebie powierzchni, ktore ochranialy probke przed zniszczeniem. Rozmiar ziaren substytutu roztworu stalego (Zr, Ti)N zmienial sie od (10 - 12)nm do 25nm, jednakze koncentracja Ti w roztworze stalym wzrastala. W procesie wygrzewania twardośc najlepszej serii probek wzrosla od 39,6 ± 1,4GPa do 53,6GPa, co wydaje sie wskazywac, ze oddzielanie spinodalne wzdluz interfejsu ziaren zostalo zakonczone. Charakterystyki trybo techniczne powlok zostaly zmierzone dla roznych zawartości podstawowych pierwiastkow Zr, Ti, oraz Si. Badania zostaly sfinansowane ze środkow ukrainskiego projektu NAS Nanomaterialy, Nanotechnologie, Nanosystemy. (Powloki ochronne wytworzone w oparciu o Zr-Ti-Si-N - wlaściwości mechaniczne i sklad fazowy)." @default.
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- W2103245855 date "2012-01-01" @default.
- W2103245855 modified "2023-09-23" @default.
- W2103245855 title "Protective coatings based on Zr-Ti-Si-N their physical and mechanical properties and phase composition" @default.
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