Vacuum-plasma multilayer protective coatings for turbine blades

Sagalovych, Alex; Sagalovych, Vlad; Popov, V. P.; Dudnik, Stanislav

doi:10.21303/978-9916-9516-5-1

Cited by 7 publications

(9 citation statements)

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“…significantly expands the possibilities of creating fundamentally new materials High-tech coatings have been developed and introduced into mass production to protect various parts and assemblies from atmospheric, gas, etc. (parts of engine fuel equipment, turbine blades), the corrosion resistance of which is 10-15 times higher than that of galvanic coatings), under conditions of high temperature and relative humidity [10][11][12][13].…”

Section: Overviewmentioning

confidence: 99%

“…Based on previous scientific and technical research in the development of complex ion-plasma and plasma-chemical processes for applying functional multicomponent multilayer composite coatings and surface modification [3,[10][11][12][13], and extensive experience in conducting complex technological work on the implementation of these developments in mass production, We have carried out experimental and technological developments of processes for applying coatings to the inner surfaces of long thin tubular products Ø ˂ 60 mm and, in particular, applying chromiumaluminum coatings to the inner surfaces of cooled GTD blades and equipment for their implementation.…”

Section: Overviewmentioning

confidence: 99%

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Application of CVD Coatings on the Inner Surfaces of Cooled GTD Blades

Sagalovych,

Popov

2024

Preprint

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The possibility of applying Mo and Cr coatings by CVD method to the inner surfaces of tubular products Ø ˂ 60 mm has been studied.The process of applying Mo and Cr coatings by the method of gas-phase deposition was developed.The areas of parameters for obtaining coatings with a uniform structure, speed, hardness, as well as patterns of change in these characteristics when changing the main parameters of the process of obtaining such coatings are determined.The proven technological processes of applying Mo and Cr CVD coatings can be the basis for the development of pilot technologies for applying functional coatings to precision parts with small-diameter inner tubular surfaces in the mechanical engineering and aviation industries.A controlled process of applying two-component chromium-aluminum coatings by gas-phase deposition using organic and organometallic substances was developed. Optimization of the processes of applying high-quality two-component chromium-aluminum coatings on prototype models of the internal cavities of cooled turbine blades was carried out.The studies revealed the characteristics of two-component chromium-aluminum coatings comparable to those of coatings used in production, while ensuring good quality coatings in terms of adhesion strength to the turbine blade material. The reproducibility of the coatings obtained makes it possible to develop pilot technologies for production in the future.The lower toxicity of the precursors used makes it possible to create an environmentally friendly technology and significantly reduce environmental problems in production when applying two-component chromium-aluminum coatings to the internal cavities of cooled turbine blades.

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Section: Overviewmentioning

confidence: 99%

Section: Overviewmentioning

confidence: 99%

Application of CVD Coatings on the Inner Surfaces of Cooled GTD Blades

Sagalovych,

Popov

2024

Preprint

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“…The scienti c and production corporation JSC "FED" has been successfully working for many years in the eld of research, development, and practical implementation of the latest nanomaterials and nanotechnologies for multicomponent coatings (mono-and multilayer, nanostructural, gradient) for various functional purposes (anti-friction, reinforcing, etc.) and modi cation of surfaces, for improving the operational characteristics of materials, components, and parts of aviation and technical purposes, rocket and space technology, energy and transport engineering, as well as in the area of devising technological processes for the application of such coatings and related equipment [1][2][3][4][5][6][7][8][9][10][11][12][13].…”

Section: Full Textmentioning

confidence: 99%

“…Given the excellent tribological properties, provided by the new vacuum-plasma technologies for surface treatment and application of the Avinit functional coatings, these technologies that employ the highdensity low-temperature highly nonequilibrium plasma have been industrially applied in power engineering in order to improve the service life and ensure reliable operation of steam separation mechanisms and steam control over the thermal and atomic turbines used in hinged couplings and sliding bearings, under the conditions of dry friction in the air and friction in the vapor, wet vapor, and water environments [13], as well as in transport engineering, in particular, to increase the performance of diesel engines [12].…”

Section: Declarationmentioning

confidence: 99%

The Vacuum-plasma Nanotechnologies Avinit

Sagalovych¹,

Sagalovych²,

Dudnik

et al. 2023

Preprint

Self Cite

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This paper reports the development of the Avinit vacuum plasma nanotechnology for applying multicomponent functional coatings and for modifying surfaces in order to improve the operational characteristics of materials, components, and parts for the aviation and technical purposes. Underlying the technology are the processes of atomic-ion surface modification and the formation of nanolayer coatings under the influence of the nonequilibrium low-temperature plasma. Special features of the Avinit nanotechnology include · integrated application use of vacuum plasma processes activated by the nonequilibrium low-temperature plasma; · the transition to a nano range to apply multi-component multilayer and nanolayer coatings with predefined characteristics. In order to apply functional multilayer composite coatings, a technological vacuum-plasma automated cluster Avinit was devised and designed, which makes it possible to implement comprehensive methods for applying coatings (plasma-chemical CVD, vacuum-plasma PVD), the processes of ion saturation and ion surface treatment), combined within a single technological cycle. The technological parameters of multilayer coating application processes have been refined in the "metal-nitrogen" and "metal-carbon" systems. Experimental results of the metal-physical and tribological studies confirm the possibility of low-temperature (< 200 ºC) application of wear-resistant high-hard Avinit coatings based on metal nitrides and carbides under the modes that allow for good adhesion to the substrate materials (steel with precision surface Ra=0.025 µm) without reducing the strength characteristics of steel and without deterioration in the purity class of the resulting surface. A new technique for strengthening and improving the wear resistance of articles made of steel and alloys by the Avinit N plasma precision nitriding in high-density plasma of nitrogen and argon has been developed. In this case, the formation process of a nitrided layer is significantly intensified, the hardness and wear resistance of parts increase without warping while maintaining the original geometric dimensions of the nitrided parts (precision nitriding "to size" with an accuracy of 1‒2 µm). The reported results of the metal-physical and tribological studies are the basis for choosing coating materials to improve the efficiency of working surfaces of precision friction pairs in the "coating-steel" and "coating-coating" systems. The paper gives examples of the industrial implementation of the Avinit technologies to increase the resource and reliability of aviation-technical articles in assembly and engine engineering.

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“…Most often, the weakest link in the "material-working environment" system, which determines the operating conditions and the resource of the entire system, is the surface. This is why it is important to develop methods and technologies for surface modification [1]. The composite design of surface layers is the most promising method for improving products operating under friction, cyclic loading, and exposure to active media.…”

Section: Introductionmentioning

confidence: 99%

Development and Research of New Hybrid Composites in Order to Increase Reliability and Durability of Structural Elements

Rusinov

Blednova

Rusinova

et al. 2023

Metals

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Hybrid composite materials can successfully solve the problems of reliability, durability, and extended functionality of products, components, and details, which operate under conditions of multifactorial influences (temperature, force, and deformation). The authors have developed a hybrid composite high-entropy AlCoCrCuFeNi material and ceramic cBNCoMo(B4CCoMo) layer. The formation of hybrid composites was carried out using new technology. This technology includes high-energy machining, high-velocity oxygen-fuel spraying in a protective environment, high-temperature thermomechanical treatment, and heat treatment. The use of the developed technology made it possible to increase the adhesive strength of the composite layers from 68 to 192 MPa. The authors performed an assessment of the structural parameters of the composite layers. The assessment showed that the composite layers had a nanocrystalline structure. The research included mechanical tests of the hybrid composites Hastelloy X (NiCrFeMo)—AlCoCrCuFeNi—cBNCoMo and Hastelloy X (NiCrFeMo)—AlCoCrCuFeNi—B4CCoMo for cyclic durability (fatigue mechanical tests) and friction wear. The use of surface-layered materials AlCoCrCuFeNi—cBNCoMo and AlCoCrCuFeNi—B4CCoMo in the composition of hybrid composites significantly increased cyclic durability. The use of surface-layered materials in the composition of hybrid composites made it possible to reduce wear intensity. The test results show that the developed composites are promising for use in various industries (including oil and gas), where high strength and wear resistance of materials are required.

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Vacuum-plasma multilayer protective coatings for turbine blades

Cited by 7 publications

References 0 publications

Application of CVD Coatings on the Inner Surfaces of Cooled GTD Blades

Application of CVD Coatings on the Inner Surfaces of Cooled GTD Blades

The Vacuum-plasma Nanotechnologies Avinit

Development and Research of New Hybrid Composites in Order to Increase Reliability and Durability of Structural Elements

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