Cavitation resistance of vacuum-arc coverings deposited on substrate of different orientation

Authors

  • Владимир Григорьевич Маринин National Science Center "Kharkov Institute of Physics and Technology", 61108, Kharkov, ul. Academic, 1, Ukraine https://orcid.org/0000-0001-5417-7029
  • Владимир Иванович Коваленко National Science Center "Kharkov Institute of Physics and Technology", 61108, Kharkov, ul. Academic, 1, Ukraine

DOI:

https://doi.org/10.15587/2312-8372.2013.16243

Keywords:

vacuum-arc coverings, titan, zirconium, resistance, cavitation, abrasive wear

Abstract

Here we set forth the results of measuring the cavitation resistance of coverings, rigidly fixed abrasive particles of vacuum-arc coverings, obtained from the erosion plasma of titanic and zirconium cathodes on the substrates with different orientation of their surfaces relative to the surfaces of cathodes. The cavitation area was developed under the end surface of the radiator of the exponential profile, connected to the ultrasonic wave generator. The oscillation amplitude of the concentrator end surface makes up 30±2 micrometers, the oscillation frequency amounts to 20 kilohertz. The erosion of the samples was measured by means of the gravimetric method. The weight loss measurement accuracy is ± 0,015 mg. The experimental data was used to build kinetic curves of material destruction of the samples. The abrasive wear was measured in accordance with the plane–disc scheme. The coverings were tested by laying them on the plane surface, while the disc was made of materials with rigidly fixed abrasive particles. The rotation speed of the disc surface, contacting with a covering, is 4,38 m/s, and the sample load against the covering equates to 2,2 H. The mass losses of the covering within a certain interim were measured as well. The micro hardness of the samples was measured with the help of the Micro Hardness Tester - 3. The research results have shown, that the cavitation resistance, micro hardness, abrasive resistance of titanic, zirconium and Ti – Zr system coverings, depend nonlinearly on the value of the angle between the substrate and the cathode surface. The formation of the Ti – Zr system coverings ensures the expansion of the area with identical covering properties. The area gets smaller by augmenting the vacuum chamber pressure.

Author Biographies

Владимир Григорьевич Маринин, National Science Center "Kharkov Institute of Physics and Technology", 61108, Kharkov, ul. Academic, 1

Candidate of physico-mathematical sciences, senior researcher

Department of intense vacuum plasma technology

Institute of solid-state physics, materials science and technologies

Владимир Иванович Коваленко, National Science Center "Kharkov Institute of Physics and Technology", 61108, Kharkov, ul. Academic, 1

Junior Researcher

Department of intense vacuum plasma technology

Institute of solid-state physics, materials science and technologies

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Published

2013-07-24

How to Cite

Маринин, В. Г., & Коваленко, В. И. (2013). Cavitation resistance of vacuum-arc coverings deposited on substrate of different orientation. Technology Audit and Production Reserves, 4(2(12), 15–18. https://doi.org/10.15587/2312-8372.2013.16243

Issue

Vol. 4 No. 2(12) (2013): Technology audit and production reserves

Section

Production reserves

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Copyright (c) 2016 Владимир Григорьевич Маринин, Владимир Иванович Коваленко

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