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Assuring performance characteristics of gas-turbine engine parts and assemblies using electrospark doping
- Authors: Denisov L.V.1, Boytsov A.G.1, Siluyanova M.V.1
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Affiliations:
- Moscow Aviation Institute (National Research University)
- Issue: Vol 17, No 2 (2018)
- Pages: 58-67
- Section: AIRCRAFT AND SPACE ROCKET ENGINEERING
- URL: https://journals.ssau.ru/vestnik/article/view/6219
- DOI: https://doi.org/10.18287/2541-7533-2018-17-2-58-67
- ID: 6219
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Abstract
The article describes surface hardening of aircraft engine titanium-alloy hydraulic cylinder face using the method of electro-spark doping by low-energy discharges. Graphite electrodes were used to provide functional behavior of the cylinder surface layer. The carbon oxide layer formed has a highly dispersed structure of a complex composition (with particles of titanium carbide, titanium oxide, graphite), 3-10 micron thick, characterized by high hardness and sliding properties. Graphite electrode alloying practically does not change the part dimensions. Subsequent diamond burnishing of the hardened surfaces decreases the value of the friction coefficient and surface roughness. Healing of defects and micro-cracks improves the fatigue resistance of the part. The developed technology makes it possible to assure the characteristics required of hydraulic cylinder work surfaces and increase their life.
About the authors
L. V. Denisov
Moscow Aviation Institute (National Research University)
Author for correspondence.
Email: gx700fl@mail.ru
Senior Lecturer, Department of Technology of Production and Maintenance of Aircraft Engines
Russian FederationA. G. Boytsov
Moscow Aviation Institute (National Research University)
Email: agboytsov@mail.ru
Doctor of Science (Engineering), Professor, Department of Technology of Production and Maintenance of Aircraft Engines
M. V. Siluyanova
Moscow Aviation Institute (National Research University)
Email: dc2mati@yandex.ru
Doctor of Science (Engineering), Professor, Department of Technology of Production and Maintenance of Aircraft Engines
Russian FederationReferences
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