scholarly journals Improvement of structure and quality of nanoscale multilayered composite coatings, deposited by filtered cathodic vacuum arc deposition method

2016 ◽  
Vol 7 ◽  
pp. 184798041668080 ◽  
Author(s):  
Alexey A Vereschaka ◽  
Anatoly S Vereschaka ◽  
Andre DL Batako ◽  
Boris J Mokritskii ◽  
Anatoliy Y Aksenenko ◽  
...  
Keyword(s):  
Composite Coating ◽  
Surface Defects ◽  
Composite Coatings ◽  
Cutting Tools ◽  
Vacuum Arc ◽  
Multilayered Composite ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Longitudinal Turning ◽  
Arc Deposition

This article studies the specific features of cathode vacuum arc deposition of coatings used in the production of cutting tools. The detailed analysis of the major drawbacks of arc-Physical Vapour Deposition (PVD) methods has contributed to the development of the processes of filtered cathodic vacuum arc deposition to form nanoscale multilayered composite coatings of increased efficiency. This is achieved through the formation of nanostructure, increase in strength of adhesion of coating to substrate up to 20%, and reduction of such dangerous coating surface defects as macro- and microdroplets up to 80%. This article presents the results of the studies of various properties of developed nanoscale multilayered composite coating. The certification tests of carbide tool equipped with cutting inserts with developed nanoscale multilayered composite coating compositions in longitudinal turning (continuous cutting) and end symmetric milling, and intermittent cutting of steel C45 and hard-to-cut nickel alloy of NiCr20TiAl showed advantages of tool with nanoscale multilayered composite coating as compared to the tool without coating. The lifetime of the carbide inserts with developed NMCC based on the system of Ti–TiN–(NbZrTiCr)N (filtered cathodic vacuum arc deposition) was increased up to 5–6 times in comparison with the control tools without coatings and up to 1.5–2.0 times in comparison with nanoscale multilayered composite coating based on the system of Ti–TiN–(NbZrTiCr)N (standard arc-PVD technology).

scholarly journals Improving operational characteristics of tool from tungsten-free carbides (cermets) by nanostructured multilayer composite coatings.

2014 ◽  
Vol 2014 (3) ◽  
pp. 20-25 ◽  
Author(s):  
Алексей Верещака ◽  
Aleksey Vereshchaka ◽  
Ойбек Хожаев ◽  
Oybek Khozhaev
Keyword(s):  
Cutting Tool ◽  
Composite Coatings ◽  
Layered Composite ◽  
Constructional Steel ◽  
Vacuum Arc ◽  
Operational Characteristics ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Nanostructured Multilayer Composite Coatings ◽  
Arc Deposition

This paper discusses the issues of improving the efficiency of cutting tool made of tungsten-free carbides (cermets) by using nano-dispersed multi-layered composite coatings formed by use of innovative processes of filtered cathodic vacuum arc deposition (FCVAD). Developed composi-tions of nano-structured multi-layered composite coatings contributes to significant improvement of properties of cutting tool made of cermets in cutting constructional steel and expansion of their application area for machining of heat-resistant alloys.

Development of Assisted Filtered Cathodic Vacuum Arc Deposition of Nano-Dispersed Multi-Layered Composite Coatings on Cutting Tools

2013 ◽  
Vol 581 ◽  
pp. 62-67 ◽  
Author(s):  
Alexey Anatolevich Vereschaka
Keyword(s):  
Composite Coatings ◽  
Cutting Tools ◽  
High Energy ◽  
Layered Composite ◽  
Vacuum Arc ◽  
Wide Range ◽  
High Energy Ions ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Tool Types

This paper presents the results of development and application of processes for modification of various properties of working surfaces of cutting tools by condensing vapor and ion flows in assisting impulse or constant exposure to high-energy ions. The paper shows features of the technology and equipment for the formation of wear-resistant components, which modify the structure and properties of working surfaces of various edge cutting tool types in a wide range of temperatures, in order to improve tool life and reliability. Various properties of the modifying components were studied, and their ability to improve the operational efficiency of different types of carbide cutting tools for cutting various materials was shown.

Development and Research of Nanostructured Multi-Layered Composite Coatings for Tool Made of Tungsten-Free Carbides (Cermets)

2013 ◽  
Vol 457-458 ◽  
pp. 120-126 ◽  
Author(s):  
A.A. Vereschaka ◽  
O.Kh. Hojaev ◽  
A.S. Vereschaka ◽  
I.S. Ruziev
Keyword(s):  
Cutting Tool ◽  
Composite Coatings ◽  
Layered Composite ◽  
Constructional Steel ◽  
Vacuum Arc ◽  
Application Area ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Arc Deposition ◽  
Rational Component

This paper discusses the issues of improving the efficiency of cutting tool made of tungsten-free carbides (cermets) by using nanodispersed multi-layered composite coatings formed by use of innovative processes of filtered cathodic vacuum arc deposition (FCVAD). The paper presents the concept of architecture of nanostructured multi-layered composite coatings, methodology for choice of function and rational component parameters of architecture for tools made of cermets. Developed compositions of nanostructured multi-layered composite coatings contributes to significant improvement of properties of cutting tool made of cermets in cutting constructional steel and expansion of their application area for machining of heat-resistant alloys.

Nano-Scale Multi-Layered Coatings for Cutting Tools Generated Using Assisted Filtered Cathodic-Vacuum-Arc Deposition (AFCVAD)

2013 ◽  
Vol 325-326 ◽  
pp. 1454-1459 ◽  
Author(s):  
A.A. Vereschaka ◽  
A.S. Vereschaka ◽  
S.N. Grigoriev ◽  
D.V. Sladkov
Keyword(s):  
High Efficiency ◽  
Cutting Tools ◽  
Deposition Process ◽  
High Energy ◽  
Vacuum Arc ◽  
Properties Of Coatings ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Carbide Inserts ◽  
Arc Deposition

The subject of this study were nano-nanoscale multilayer coatings formed using the process of filtered cathodic vacuum arc deposition in assisting high-energy ions of chromium. We used a special emitter (implantor) to generate chromium ions with high energy. Such key parameters of coatings as composition, structure, a thickness, hardness, adhesion in relation to a substrate obtained at various energy of chrome ions have been studied. It is establish the positive change of key properties of coating deposited on carbide inserts WC/CrC/Co, WC / (Co-Re), TiC/TaC/Co at assisted impact of ions Cr at ion acceleration voltage within the range of 10-40 kV. The results of measurement of parameters of coatings with use nanoindentometer are consistent with the X-ray analysis of the stresses in the coating (XSA study). The mechanisms of the effect of modified properties of coatings formed in assisting the filtered cathodic vacuum arc deposition on the properties of the carbide inserts in cutting structural steels and hard-to-cut nickel alloys have confirmed the high efficiency of the deposition process developed coatings and coating compositions.

scholarly journals Influence of the Thickness of a Nanolayer Composite Coating on Values of Residual Stress and the Nature of Coating Wear

Coatings ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 63 ◽  
Author(s):  
Alexey Vereschaka ◽  
Marina Volosova ◽  
Anatoli Chigarev ◽  
Nikolay Sitnikov ◽  
Artem Ashmarin ◽  
...  
Keyword(s):  
Residual Stress ◽  
Composite Coating ◽  
Compressive Stress ◽  
Vacuum Arc ◽  
X Ray Diffraction ◽  
Wear Resistant ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Resistant Layer ◽  
Arc Deposition

The article discusses the influence of the thickness of the wear-resistant layer of the Zr-ZrN-(Zr,Al,Si)N nanolayer composite coating on the values of residual stress and the nature of coating wear. The study focused on coatings with wear-resistant layer thicknesses of 2.0, 4.3, 5.9, and 8.5 µm, deposited using filtered cathodic vacuum arc deposition (FCVAD) technology. The X-ray diffraction (XRD) method based on the anisotropy of the elasticity modulus was used to find the values of the residual stress. The nature of the formation of interlayer delamination under the influence of residual compressive stress was studied using a scanning electron microscope (SEM). When the wear-resistant layers had a thickness of 2.0–5.9 μm, tensile stress formed, which decreased with an increase in the thickness of the coating. When the thickness of a wear-resistant layer was 8.5 μm, compressive stress formed. Under the action of compressive stress, periodic interlayer delamination formed, with a pitch of about 10 binary nanolayers. A mathematical model is proposed to describe the nature of the formation of interlayer delamination under the influence of compressive residual stress, including in the presence of a microdroplet embedded in the coating structure.

Improving Efficiency of End Mills by Deposition of Modifying Nano-Scale Multilayer Composite Coatings

2015 ◽  
Vol 798 ◽  
pp. 351-356 ◽  
Author(s):  
Alexey Anatolevich Vereschaka ◽  
Boris Y. Mokritskii ◽  
Dmitriy A. Pustovalov ◽  
Anatoliy Stepanovich Vereschaka ◽  
Jury I. Bublikov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Composite Coatings ◽  
Physical And Mechanical Properties ◽  
Vacuum Arc ◽  
Multilayer Composite ◽  
End Mills ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Nanostructured Multilayer Composite Coatings ◽  
Arc Deposition

The study considers the challenge of improving the efficiency of end mills made of carbides through modification of physical and mechanical properties of tools by forming nanostructured multilayer composite coatings on its working surfaces with the use of filtered cathodic vacuum-arc deposition (FCVAD). The system and structure of three-component nanostructured multilayer composite modifying coatings for deposition on the working surfaces of the end mills are developed. The study presents the results of laboratory and industrial tests of end mills with coatings designed for conditions for rough and finish machining.

scholarly journals Increase in Efficiency of End Milling of Titanium Alloys Due to Tools with Multilayered Composite Nano-Structured Zr-ZrN-(Zr,Al)N and Zr-ZrN-(Zr,Cr,Al)N Coatings

Coatings ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 395 ◽  
Author(s):  
Alexey Vereschaka ◽  
Maksim Oganyan ◽  
Yuri Bublikov ◽  
Nikolay Sitnikov ◽  
Konstantin Deev ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Metal Cutting ◽  
End Milling ◽  
Cutting Tools ◽  
Vacuum Arc ◽  
Multilayered Composite ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Life Parameter

The study deals with an increase in the tool life parameter for metal-cutting tools and efficiency of end milling for titanium alloys, due to the use of tools with multilayered composite nano-structured Zr–ZrN–(Zr,Al)N and Zr–ZrN–(Zr,Cr,Al)N coatings, deposited through the technology of the filtered cathodic vacuum arc deposition (FCVAD). The studies included the microstructured investigations using SEM, the analysis of chemical composition (Energy-dispersive X-ray spectroscopy, EDXS), the determination of the value of critical failure force (with the use of scratch testing), and the measurement of the microhardness of the coatings under study. The cutting tests were conducted in end milling of titanium alloys at various cutting speeds. The mechanisms of wear and failure for end milling cutters with the coatings under study were studied in milling. The studies determined the advantages of using a tool with the coatings under study compared to an uncoated tool, as well as to tools with the commercial Ti–TiN coating and the nano-structured Ti–TiN–(Ti,Al)N coating. Adding Cr to the composition of the coating can significantly increase the hardness, while the coating retains sufficient ductility and brittle fracture resistance, which allows for a best result when milling titanium alloys.

Increased Operating Properties of Cutting Ceramics by Application of Nanostructured Multilayer Wear-Resistant Coating

2017 ◽  
Vol 50 ◽  
pp. 90-104 ◽  
Author(s):  
Alexey Anatolevich Vereschaka ◽  
Marina Aleksandrovna Volosova ◽  
Alexey A. Krapostin ◽  
Andre Batako ◽  
Anton Evgenievich Seleznev
Keyword(s):  
High Speed ◽  
Composite Coatings ◽  
Cutting Tools ◽  
Physical And Mechanical Properties ◽  
Deposition Process ◽  
Layered Composite ◽  
Vacuum Arc ◽  
Ceramic Substrates ◽  
Filtered Cathodic Vacuum Arc ◽  
Longitudinal Turning

This paper presents the results of the development of nanoscale multi-layered composite coatings for improving the contact performance of ceramic cutting tools. These nanocoatings help reducing brittle fracture of cutting edges and ensure a balanced wear of tool contact areas during dry high-speed machining of hardened steels. A filtered cathodic vacuum arc deposition process was used to generate the nanoscale multi-layered composite coatings (NMCC) with improved physical and mechanical properties and adhesion strength to ceramic substrate. In this work, thermodynamic criteria were used to evaluate the selected composition of NMCC, and the crystal-chemical, physical, mechanical and cutting properties and wear mechanisms were studied. Ti-(TiAl)N-(ZrNbTiAl)N coating was deposited on Al2O3, Al2O3-TiC and Si3N4 ceramic substrates. Test results showed that the wear mechanism of the coated tool was predominantly due to adhesive-fatigue processes. The development of wear was observed to be centered on the rake and flank faces of the tool without brittle chipping. The results of high-speed longitudinal turning of hardened steel X153CrMoV12 showed an increase in tool life by a factor of 1.5 against the uncoated tools and a factor of 1.3 compared with standard PVD coating Ti-(TiAl)N.

scholarly journals Filtered cathodic vacuum arc deposition (FCVAD) technology as method for creation of nanostructured multicomponent modifying coatings for wide application range

Procedia CIRP ◽  
2020 ◽  
Vol 95 ◽  
pp. 999-1003
Author(s):  
Alexey Vereschaka ◽  
Marina Volosova ◽  
Nikolay Sitnikov ◽  
Nikolay Andreev ◽  
Filipp Milovich ◽  
...  
Keyword(s):  
Vacuum Arc ◽  
Application Range ◽  
Vacuum Arc Deposition ◽  
Filtered Cathodic Vacuum Arc ◽  
Arc Deposition
Sign in / Sign up

Export Citation Format

Share Document