Duplex vacuum ion-plasma coatings synthesis technology of the TiZrAIN system for energy installations parts

Аuthors

Grigor’ev S. N.^*, Volosova M. A.^**, Sukhova N. A.^***, Shekhtman S. R.^****

Moscow State University of Technology "STANKIN", 1, Vadkovsky lane, Moscow, 127994, Russia

*e-mail: s.grigoriev@stankin.ru
**e-mail: m.volosova@stankin.ru
***e-mail: nad_suhova@mail.ru
****e-mail: shex@inbox.ru

Abstract

The article considers the up-to-date problem of the power plant parts resource enhancing. One of this problem solution consists in synthesis of duplex coatings, representing multi-layer coatings being created by successive surface modification, and coating precipitation in the unitary operational space. The surface layer ion-plasma nitration in the plasma of non-self-maintained high-current discharge, generated by the “PINK” plasma generator is employed as a surface modification method. A method of condensation with ion bombardment is applied as a plasma-ion method for protective coatings obtaining. The authors proposed obtaining duplex coatings of the TiZrAIN system on the HNV 6.6-I1 modernized chamber-type installation equipped with the electric arc evaporators with Ti, Zr and Al cathodes.

With a view to vacuum ion-plasma coatings with the complex of enhanced operational properties creating a technology for duplex coatings of the TiZrAIN system, including successive employment of ion-plasma nitration and ion-plasma deposition in the unitary operational space was created. These two technological processes combining in the unitary operational space is performed without vacuum chamber depressurizing and overloading substrates being processed. The TiZrAIN system coatings synthesis was being performed under conditions of plasma assisting by the “PINK” plasma generator. A system of the magnetic-arc filtration for the electric arc evaporator with Al-cathode is being employed while coatings deposition, which allows accomplishing separation of the drop phase of low-melting aluminum, and contributes to substantial drop phase reduction in the coating and initial substrate roughness retention.

Samples of the 20 mm diameter and 3 mm height were obtained for studying micro-hardness, adhesive strength and corrosion resistance. The studies of the duplex coating of the TiZrAlN system synthesized by the developed technology were being performed in comparison with the multi-layer coating obtained by the vacuum ion-plasma method, as well as with the duplex coating obtained by successive pursuance of the ion-plasma nitration, and synthesis of the vacuum-ion coating (without plasma current separation).

The synthesized coatings surface micro-hardness measuring revealed that duplex coatings micro-hardness was higher compared to the multilayer coating, which is being associated with the coating surface layer application on the surface already strengthened by the ion-plasma nitration. Surface micro-hardness of the duplex coating being synthesized, obtained without plasma separation was 45.2 GPa, 46.6 GPa fabricated by the developed technology, while the multi-layer coating micro-hardness was 35.3 GPa.

The study of micro-photos of scratches and profile protocols of the fracture zones obtained while scratch-testing revealed that duplex coatings synthesized by the developed technologies was being characterized by the enhanced adhesive strength. Loading of the first cracks origination in the duplex coatings is 20 mN, whereas the one of multilayer coatings is 14.83 mN.

Corrosion rate studies revealed that with the duplex coating with plasma flux separation it was 11.7% less than the samples with duplex coating without plasma flux separation and 30.1% less than for the samples with multilayer coating. Consequently, the surface of the coating synthesized by the developed technology is more passive, which indicates its higher corrosion resistance.

The conducted studies results confirmed the prospective of the developed technology of duplex coatings synthesis application for the power plants parts protection from abrasive, corrosive and erosion impacts.

Keywords:

vacuum-plasma coatings, duplex coatings, ion assisting, magnetic arc filtering, nitriding

References

1. Korsunov K.A., Ashikhmina E.A. Vestnik dvigatelestroeniya, 2007, no. 1, pp. 110–112.

2. Smyslov A.M., Dyblenko Yu.M., Smyslova M.K. et al. Vestnik UGATU, 2013, vol. 17, no. 1(54), pp. 108–113.

3. Grigoriev S.N., Gurin V.D., Volosova M.A., Cherkasova N.Y. Development of residual cutting tool life prediction algorithm by processing on CNC machine tool. Materialwissenschaft und Werkstofftechnik, 2013, vol. 44, no. 9, pp. 790-796. DOI: 10.1002/mawe.201300068

4. Sukhova N.A., Semenov A.S. Nauka – proizvodstvu: ezhegodnyi nauchno-tekhnicheskii sbornik. Ufa, Vagant, 2012, pp. 93-104.

5. Rolinski E., Cowell B. Plasma Nitride Surface Hardening of Titanium for Aerospace and Armament Applications. Aerospace & Defense Technology, 2012, pp. 10-12.

6. Krymov V.V., Fomina L.P. Aviatsionnaya promyshlennost’, 2014, no. 4, pp. 19-22.

7. Volosova M.A., Grigor’ev S.N. Uprochnyayushchie tekhnologii i pokrytiya, 2010, no. 6(66), pp. 37-42.

8. Li C.X., Bell T. Corrosion properties of plasma nitrided AISI 410 martensitic stainless steel in 3.5% NaCl and 1% HCl aqueous solutions. Corrosion Science, 2006, vol. 48, no. 8, pp. 2036–2049. DOI: 10.1016/j.corsci.2005.08.01

9. Arushanov K.A., Zeltser I.A., Karabanov S.M. et al. New technology of ion-plasma modification of the contact surfaces of reed switches in oscillatory discharge. Journal of Physics: Conference Series, 2012, vol. 345, no. 1: 012003. DOI: 10.1088/1742-6596/345/1/012003

10. Grigoriev S.N., Migranov M.Sh., Shekhtman S.R. et al. Sensor Information Processing in the Control of Quality Parameters of Functional Coatings of Products Deposited by Vacuum-Arc Spraying. SPIE Future Sensing Technologies, 2021, vol. 11914. DOI: 10.1117/12.2605753

11. Krysina O.V., Koval’ N.N., Lopatin I.V., Shugurov V.V. Izvestiya vysshikh uchebnykh zavedenii. Fizika, 2014, vol. 57, no. 11/3, pp. 88–92.

12. Mukhin V.S., Shekhtman S.R. (eds) Fizicheskie metody naneseniya nanopokrytii (Physical methods of nanocoating), 3rd ed. Moscow, Yurait, 2023, 333 p.

13. Migranov M.S., Shekhtman S.R., Sukhova N.A., Gusev A.S. Wear-resistant compexes of instrumental purpose for operation under increased thermal-power loading. Aerospace MAI Journal, 2022, vol. 29, no. 3, pp. 211-219. DOI: 10.34759/vst-2022-3-211-219

14. Weinhold T., Dalke A., Schramm A., Biermann H. Sliding wear behavior of duplex coatings with different plasma nitride layers and a Cr-Al-Ti-B-N coating. Engineering Reports. 2022. 4(3).DOI: 10.1002/eng2.12377

15. Sukhova N.A. Nauka – proizvodstvu: ezhegodnyi nauchno- tekhnicheskii sbornik. Ufa, Vagant, 2014, pp. 88-97.

16. Migranov M.Sh., Shekhtman S.R., Migranov A.M. Sborka v mashinostroenii, priborostroenii, 2019, no. 10, pp. 464–469.

17. Oleinik M.A., Balyakin A.V., Skuratov D.L., Petrov I.N., Meshkov A.A. The effect of direct laser beam energy deposition modes on single rollers and walls shaping from the HN50VMTUB heat resisting alloy. Aerospace MAI Journal, 2022, vol. 29, no. 4, pp. 243-255. DOI: 10.34759/vst-2022-4-243-255

18. Grigor’ev S.N., Volosova M.A. Vestnik mashinostroeniya, 2005, no. 9, pp. 32-36.

19. Ushakov I.V., Oshorov A.D. Micro-fracture of multilayer composites based on morphous-nanocrystalline metal alloy. Aerospace MAI Journal, 2022, vol. 29, no. 3, pp. 246-252. DOI: 10.34759/vst-2022-3-246-252

20. Vereschaka A.S., Grigoriev S.N., Sotova E.S., Vereschaka A.A. Improving the efficiency of the cutting tools made of mixed ceramics by applying modifying nanoscale multilayered coatings. Advanced Materials Research, 2013, vols. 712-715, pp. 391-394. DOI: 4028/www.scientific.net/ AMR.712-715.391

21. Suhova N.A., Shekhtman S.R., Migranov M.S. Synthesis of nanostructured composite coatings in ARC discharge plasma. 4th International conference on industrial engineering ICIE 2018. Lecture notes in mechanical engineering. - Springer, Cham. 2019, pp. 1393-1399. DOI: 10.1007/978-3-319-95630-5_147