TRIBOLOGICAL CHARACTERISTICS OF NITRIDED IN PLASMA GLOW DISCHARGE SAMPLES FROM TITANIUM ALLOY VT5 IN PAIRS WITH DIFFERENT MATERIALS

Authors

  •  Олексій Сагалович Акціонерне Товариство «ФЕД» (м. Харків)
  •  Владислав Сагалович Акціонерне Товариство «ФЕД» (м. Харків)
  •  Віктор Попов Акціонерне Товариство «ФЕД» (м. Харків)
  •  Станіслав Дуднік Акціонерне Товариство «ФЕД» (м. Харків)
  • Олександр Олійник завод ім. Малишева (м. Харків)

DOI:

https://doi.org/10.18372/0370-2197.3(96).16830

Keywords:

titanium alloys, nitriding, tribological characteristics, friction, wear resistance

Abstract

One of the modern methods of improving operating characteristics of titanium and titanium-based alloys under conditions of friction and increased contact loads is the method of ion-plasma nitriding. The effect of nitriding of VT5 alloy in the plasma of a glow discharge excited in a hollow cathode on its tribological characteristics in pairs with different materials in T-1 fuel and under dry friction conditions has been studied. For research and tribological tests, samples of VT5 alloy were nitrided in the plasma of a glow discharge excited in a hollow cathode at a temperature of 975 ± 15 ° C and a pressure of 58 ± 2 PA in a nitrogen-argon gas mixture with a nitrogen content of 78 %. Studies of samples of BT5 alloy after nitriding showed that the surface roughness Ra was in the range of 0.58-0.64, and the surface hardness HV5 was 525 ± 20 kgf/mm² at a base hardness of 325 ± 15 kgf/mm². Tribological tests were performed on a friction machine 2070 SMT-1 according to the scheme "cube - roller". Tests under conditions of friction with oil were performed at a load of 200 N. The sliding speed during the tests was 1.3 m/s, the test time was 75 sec. The test under dry friction conditions was carried out at a load of 100 N and a sliding speed of 0.785 m / s, the test time was 30 minutes. Low wear ability in relation to the nitrided titanium alloy VT5 (<2.4x10-4 mm3 / sec), as well as friction coefficients at the level of 0.08 to 0.12 in the order of their growth had bronze BrSu3N3Ts3S20F0,2, Br.O10S2NZ, BrSu6F0,9, steel SHH-15, cast iron VCH2169-2, cemented steel 20H3MVF.

Author Biographies

 Олексій Сагалович, Акціонерне Товариство «ФЕД» (м. Харків)

 керівник Управління спеціальних технологій Акціонерного Товариства «ФЕД» (м. Харків)

 Владислав Сагалович, Акціонерне Товариство «ФЕД» (м. Харків)

д-р техн. наук, професор, головний технічний керівник Акціонерного Товариства «ФЕД» (м. Харків)

 Віктор Попов, Акціонерне Товариство «ФЕД» (м. Харків)

 д-р техн. наук, голова правління Акціонерного Товариства «ФЕД» (м. Харків)

 Станіслав Дуднік, Акціонерне Товариство «ФЕД» (м. Харків)

 канд. техн. наук, керівник відділу тонких технологій Акціонерного Товариства «ФЕД» (м. Харків)

Олександр Олійник, завод ім. Малишева (м. Харків)

 канд. техн. наук, керівник лабораторії трибології заводу ім. Малишева (м. Харків)

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Published

2022-09-07

How to Cite

Сагалович, Олексій, Сагалович, Владислав, Попов, Віктор, Дуднік, Станіслав, & Олійник, О. (2022). TRIBOLOGICAL CHARACTERISTICS OF NITRIDED IN PLASMA GLOW DISCHARGE SAMPLES FROM TITANIUM ALLOY VT5 IN PAIRS WITH DIFFERENT MATERIALS. Problems of Friction and Wear, (3(96), 4–14. https://doi.org/10.18372/0370-2197.3(96).16830

Issue

No. 3(96) (2022)

Section

Проблеми тертя та зношування

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