scholarly journals Creation of modified friction surfaces

2021 ◽  
Vol 341 ◽  
pp. 00016
Author(s):  
Andrei Gorin ◽  
Alexandr Novikov ◽  
Svetlana Karpeeva ◽  
Мaria Tokmakovа
Keyword(s):  
Thin Film ◽  
Experimental Studies ◽  
Film Coating ◽  
Qualitative And Quantitative Analysis ◽  
Thin Film Coating ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Antifriction Coatings ◽  
Series Of Experiments ◽  
Friction Surfaces

The article provides information on the creation of modified friction surfaces. The results of the analysis of the applied antifriction film coatings are presented. One of the main problems in the application of thin film coatings is the lack of technological modes recommended by the manufacturer. The composition of the film anti-friction coating is described. The results of experimental studies of the deposition of thin film coatings are presented. Selected pneumatic spray gun for depositing of thin film coating. A series of experiments were carried out to identify the technological modes of applying thin film coatings. A qualitative and quantitative analysis of the results of applying thin film coatings has been carried out. A functional diagram of the application of an antifriction film coating is proposed. On the basis of the conclusions made, recommendations are given on the technological modes of applying thin film antifriction coatings on the modified friction surface.

ОБРАЗОВАНИЕ МОДИФИЦИРОВАННЫХ ПОВЕРХНОСТЕЙ ТРЕНИЯ

2021 ◽  
Vol 74 (3) ◽  
pp. 17-23
Author(s):  
A.Yu. RODICHEV ◽  
◽  
A.N. NOVIKOV ◽  
A.V. GORIN ◽  
M.A. TOKMAKOVA ◽  
...  
Keyword(s):  
Thin Film ◽  
Experimental Studies ◽  
Film Coating ◽  
Qualitative And Quantitative Analysis ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Antifriction Coatings ◽  
Functional Scheme ◽  
Series Of Experiments ◽  
Friction Surfaces

The article provides information on the formation of modified friction surfaces. The results of the analysis of the applied antifriction film coatings are presented. One of the main problems of applying thin film coatings is the lack of technological modes recommended by the manufacturer. The composition of the film antifriction coating is described. The results of experimental studies of the application of thin film coatings are presented. A pneumatic spray gun for applying thin film coatings was selected. A series of experiments were carried out to identify the technological modes of applying thin film coatings. A qualitative and quantitative analysis of the results of applying thin film coatings was performed. A functional scheme for applying an anti-friction film coating is proposed. Based on the conclusions made, recommendations are given on the technological modes of applying thin film antifriction coatings to the modified friction surface.

Structure and Properties of SiC Coated R6M5 High-Speed Steel

2013 ◽  
Vol 594-595 ◽  
pp. 730-734
Author(s):  
Мazhyn Skakov ◽  
Bauyrzhan Rakhadilov ◽  
Gaukhar Karipbayeva
Keyword(s):  
Thin Film ◽  
High Speed ◽  
High Speed Steel ◽  
Film Coating ◽  
Thin Film Coating ◽  
X Ray ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Before And After ◽  
Scanning Electronmicroscopy

A Possibility of R6M5 High-Speed Steel Strengthening by Finishing Plasma Strengthening(FPS) Method to Application of Sic Thin Film Coatings were under Research. by Scanning Electronmicroscopy and X-Ray Analysis Conducted a Comparative Study of the Structure, Phase and Chemicalcomposition before and after Application of Sic Thin Film Coating of R6M5 High-Speed Steel Surfacelayer. it is Experimentally Stated, that the Coverage of Sic Applied Method FPS Consists of Fineglobular Shape at the Size of 100-300 Nm. Determined that the Microhardness of R6M5 Steel Surfaceafter Application Sic Coating Increased Almost to 2.5 Times Comparing to Original. it is Shown Thatthe Application of Sic Thin Film Coating by FPS Method is a Promising Highly Effective Method Ofcutting Tools Surface Strengthening Made from High Speed Steels.

The Oxidation Stability of Boron Nitride Thin Films on MgO and TiO2 Substrates

1991 ◽  
Vol 250 ◽  
Author(s):  
Xiaomei Qiu ◽  
Abhaya K. Datye ◽  
Robert T. Paine ◽  
Lawrence. F. Allard
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Oxidation Stability ◽  
Film Coating ◽  
Thin Film Coating ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Transmission Electron ◽  
The Stability

AbstractThe stability of BN thin film coatings (2–5 nm thick) on MgO and TiO2 substrates was investigated using transmission electron microscopy (TEM). The samples were heated in air for at least 16 hours at temperatures ranging from 773 K - 1273 K. On MgO supports, the BN thin film coating was lost by 1073 K due to a solid state reaction with the substrate leading to formation of Mg2B2O5. No such reaction occurred with the TiO2 substrate and the BN was stable even at 1273 K. However, the coating appeared to ball up and phase segregate into islands of near-graphitic BN and clumps of TiO2 (rutile). The oxidizing treatment appears to promote the transformation from turbostratic BN to graphitic BN.

Bio-Derived Bone Surface Modification with Biomimetic Thin Film Coatings to Improve Mesenchymal Stem Cells Adhesion and Spreading

2008 ◽  
Vol 373-374 ◽  
pp. 722-725 ◽  
Author(s):  
Ke Dong Song ◽  
Peng Fei Wen ◽  
Tian Qing Liu
Keyword(s):  
Thin Film ◽  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Cell Adhesion ◽  
Film Coating ◽  
Thin Film Coating ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Marrow Mesenchymal Stem Cells

Initial attachment and spreading of the inoculated cells determines the long-time viability of cells onto biomedical scaffolds designed for various orthopedic or other clinical applications. The aim of this study was to investigate the influence of biomimetic thin film coating surfaces of bio-derived bone scaffolds with collagen proteins and chitosan on bone marrow mesenchymal stem cells interactions in order to improve cell adhesion, spreading and proliferation. These two merits were used synthetically to generate apatite-based materials that can function as allograft bone grafts in humans. In this study, the thin film coatings were operated by means of soaked, pre-frozen, and freeze-dried step by step. All coatings were characterized using Raman spectra, inverted microscope, atomic force microscopy, and scanning electron microscopy. After that, the bio-derived bone scaffolds with or without thin film coatings were used in bone marrow mesenchymal stem cell culture experiments to study cell adhesion, spreading, viability, proliferation and morphology. Then, the biological morphologies of the fabricated cell-scaffold constructs were detected by scanning electron microscope (SEM). The cell reactions were investigated concerning cell adhesion, migration, spreading, and proliferation under inverted microscope and fluorescence microscopy. The results showed that the bio-derived bone scaffold treated with thin film coatings by using rat-tail type I collagen and chitosan improved the adhesion and spreading of mesenchymal stem cells in comparison to the untreated one. Besides, cell viability and morphology were not affected by the presence of either type of thin film coating. Still, the results assay revealed an increased proliferation of bone marrow mesenchymal stem cells on both types of thin film coatings compared to coating with non-coated controls.

scholarly journals Thin film coatings material particles creation by pulsed methods in vacuum

2021 ◽  
Vol 2059 (1) ◽  
pp. 012017
Author(s):  
Y V Panfilov ◽  
L L Kolesnik ◽  
A V Gurov
Keyword(s):  
Thin Film ◽  
Ion Beam ◽  
Film Coating ◽  
Laser Deposition ◽  
Vacuum Arc ◽  
Pulsed Discharge ◽  
Thin Film Coating ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Nanocrystalline Thin Film

Abstract Thin film materials particles creation pulsed methods such as magnetron sputtering HiPIMS, pulsed laser deposition PLD, vacuum arc pulsed discharge, high-intensity pulsed ion beam impact HIPIB, as well, were described. It was shown that the stream of material, created by means of an explosion action such as ablation, avalanche paired impacts and microsecond electrical disruption as well creates preconditions for nanocrystalline thin film coating manufacture.

EXPERIMENTAL STUDIES OF THE INFLUENCE OF THIN-FILM COATINGS ON THE RESISTANCE OF THE TOOL

2020 ◽  
Vol 5 ◽  
pp. 55-60
Author(s):  
G.V. BARSUKOV ◽  
A.V. KIRICHEK ◽  
K.F. SELEMENEV ◽  
E.M. SELEMENEVA
Keyword(s):  
Thin Film ◽  
Experimental Studies ◽  
Cutting Fluids ◽  
Adhesive Interaction ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Rigid Contact

The article deals with the problems of increasing the efficiency of centrifugal processing with a rigid contact. It is shown that when materials with different properties interact, it is energetically "advantageous" to have a discontinuous contact between interacting elements of the surfaces of the tool and the part. It has been established that epilating the working surfaces of the tool significantly changes the nature of the resistance to adhesive interaction, the effectiveness of which is significantly increased when using cutting fluids (lubricating and cooling technological media).

A Comparative Study on the Hardness of CrN, CrC and CrCN Coatings

2014 ◽  
Vol 1016 ◽  
pp. 145-149 ◽  
Author(s):  
Supakanya Khanchaiyaphum ◽  
Charnnarong Saikaew ◽  
Parinya Srisattayakul ◽  
Naphatara Intanon
Keyword(s):  
Thin Film ◽  
Surface Quality ◽  
High Hardness ◽  
Film Coating ◽  
Machine Component ◽  
Thin Film Coating ◽  
Thin Film Coatings ◽  
Part Surface ◽  
Hardness Values

Improving the surface quality of various machine components can extend their lifespans by several orders of magnitude. Thin film coating is one approach that can be used to enhance machine part surface quality. In this work, three different thin film coatings (i.e, CrN, CrC and Cr-C-N) were statistically compared for surface quality improvement of fishing-net weaving machine component, namely an upper hook. All coatings were deposited utilizing DC sputtering technique. The effects of coating types on hardness for both hardchrome and non hardchrome coated upper hooks were systematically investigated using one-way analysis of variance (ANOVA). Scanning electron microscope (SEM) and energy dispersive X-ray (EDX) were used to examine the surface quality of the machine component. This study found that CrN gave very high hardness values of 13.042 GPa for hardchrome coated upper hooks and 12.583 GPa for non-hardchrome coated upper hooks. However, the averages hardness of the hardchrome coated and non-hardchrome coated upper hooks were not significantly different at the 95% confidence level.

scholarly journals Solving the inverse problem for determining the optical characteristics of materials

2020 ◽  
Vol 28 (4) ◽  
pp. 378-397
Author(s):  
Konstantin P. Lovetski ◽  
Andrey A. Zhukov ◽  
Michael V. Paukshto ◽  
Leonid A. Sevastianov ◽  
Anastasiia A. Tiutiunnik
Keyword(s):  
Thin Film ◽  
Inverse Problem ◽  
Computing Time ◽  
Film Coating ◽  
Permittivity Tensor ◽  
Transmission Measurement ◽  
Thin Film Coating ◽  
Reflection And Transmission ◽  
Thin Film Coatings

The paper describes a methodology for determining the optical and physical properties of anisotropic thin film materials. This approach allows in the future designing multilayer thin-film coatings with specified properties. An inverse problem of determining the permittivity tensor and the thickness of a thin film deposited on a glass substrate is formulated. Preliminary information on the belonging of a thin-film coating to a certain class can significantly reduce the computing time and increase the accuracy of determining the permittivity tensor over the entire investigated range of wavelengths and film thickness at the point of reflection and transmission measurement Depending on the goals, it is possible to formulate and, therefore, solve various inverse problems: o determination of the permittivity tensor and specification of the thickness of a thick (up to 1 cm) substrate, often isotropic; o determination of the permittivity tensor of a thin isotropic or anisotropic film deposited on a substrate with known optical properties. The complexity of solving each of the problems is very different and each problem requires its own specific set of measured input data. The ultimate results of solving the inverse problem are verified by comparing the calculated transmission and reflection with those measured for arbitrary angles of incidence and reflection.

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