scholarly journals Development and research of nanostructured multilayer composite coatings for tungsten-free carbides with extended area of technological applications

2016 ◽  
Vol 87 (9-12) ◽  
pp. 3449-3457 ◽  
Author(s):  
A. A. Vereschaka ◽  
A. S. Vereschaka ◽  
A. D. Batako ◽  
O. Kh. Hojaev ◽  
B. Y. Mokritskii
Keyword(s):  
Composite Coatings ◽  
Multilayer Composite ◽  
Extended Area ◽  
Nanostructured Multilayer Composite Coatings

scholarly journals Nanostructured Multilayer Composite Coatings for Cutting Tools

2020 ◽  
Author(s):  
Sergey Grigoriev ◽  
Alexey Vereschaka ◽  
Marina Volosova ◽  
Caterina Sotova ◽  
Nikolay Sitnikov ◽  
...  
Keyword(s):  
Composite Coatings ◽  
Cutting Tools ◽  
Theoretical Background ◽  
Multilayer Composite ◽  
Wear Resistant ◽  
Wear Resistant Coatings ◽  
Ceramic Tools ◽  
Operation Conditions ◽  
Resistant Layer ◽  
Nanostructured Multilayer Composite Coatings

The chapter deals with the specific features concerning the application of wear-resistant coatings to improve the performance properties of ceramic cutting tools. The paper discusses the theoretical background associated with the specific operation conditions and wear of ceramic cutting tools and influencing the choice of the compositions and structures of wear-resistant coatings. The studies were focused on the application of the Ti-(Ti,Al)N-(Zr,Nb,Ti,Al)N multilayer composite coating with a nanostructured wear-resistant layer, as well as the (Cr,Al,Si)N–(DLC–Si)–DLC–(DLC–Si) and (Cr,Al,Si)N–DLC composite coatings in order to improve the cutting properties of ceramic tools. The chapter presents the results of the comparative cutting tests for the tools with the coatings under study, uncoated tools, and tools with the Ti-(Ti,Al)N commercial coating. The wear mechanisms typical for ceramic cutting tools with coatings of various compositions have been investigated.

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.

Study of Properties of Nanostructured Multilayer Composite Coatings of Ti-TiN-(TiCrAl)N and Zr-ZrN-(ZrNbCrAl)N

2016 ◽  
Vol 40 ◽  
pp. 90-98 ◽  
Author(s):  
Alexey Anatolevich Vereschaka ◽  
Anatoliy Stepanovich Vereschaka ◽  
Jury I. Bublikov ◽  
Anatoliy Y. Aksenenko ◽  
Nikolay N. Sitnikov
Keyword(s):  
Tool Life ◽  
Cutting Tool ◽  
Composite Coatings ◽  
Tool Material ◽  
Multilayer Composite ◽  
Functional Coatings ◽  
Surface Layers ◽  
X Ray ◽  
Resistant Layer ◽  
Nanostructured Multilayer Composite Coatings

The structures of surface layers of the tool material, adapted to the conditions of the thermomechanical loading during the cutting process, can be formed with the use of different processing methods, the most effective of which is to deposit functional coatings on working surfaces of the cutting tool. During the studies, two nanostructured multilayer composite coatings (NMCCs) were considered: Ti-TiN-(TiCrAl)N and Zr-ZrN-(ZrNbCrAl)N. Metallographic studies were conducted, and the phase compositions of the coatings were determined by X-ray crystal analysis. The efficiency of tools made of carbide T14K8 with developed coatings was determined by comparative evaluation of tool life of a tool without coating, a tool with standard coating (TiN), and a tool with elaborated coatings (Ti-TiN-(TiCrAl)N and Zr-ZrN-(ZrNbCrAl)N) in turning structural steel 45. These tests allow noting the increase in tool life of a tool with elaborated NMCCs by up to 4 times as compared with tool life of an uncoated tool and by up to 2 times as compared with tool life of standard coating TiN. Meanwhile, NMCC of Ti-TiN-(TiCrAl) showed lifetime about 10% longer than NMCC of Zr-ZrN-(ZrNbCrAl)N). The longer lifetime of NMCC of Ti-TiN-(TiCrAl) conforms to its better adhesion characteristics and thinner nanosublayers of its wear-resistant layer.

The Deposition of Ni/Cr-Cr3C2 Composite Coatings by Arc-EB Hybrid Technology

2011 ◽  
Vol 674 ◽  
pp. 71-80 ◽  
Author(s):  
Jerzy Smolik ◽  
Adam Mazurkiewicz
Keyword(s):  
Electron Beam ◽  
Composite Coating ◽  
Arc Discharge ◽  
Composite Coatings ◽  
Chemical Compositions ◽  
Multilayer Composite ◽  
Substrate Bias Voltage ◽  
Hybrid Technology ◽  
Developed Surface ◽  
The Creation

The new hybrid technology is a combination of electron beam evaporation and arcevaporation processes, enabling the creation of the anti-erosion multilayer composite coating Ni/Cr- Cr3C2 with different volume of Cr3C2 filling in soft Ni/Cr matrix. The soft matrix made of Ni/Cr alloy and hard filling of Cr3C2 are created at the same time and directly during the electron beam and arc-evaporation process. Changes of the parameters of the hybrid process, i.e. pressure, current of arc discharge and substrate bias voltage Ubias, make it possible to control the volume of Cr3C2 and are a factor in filling the soft Cr/Ni matrix with carbides Cr3C2. With the use of the developed surface treatment hybrid technology, the multilayer composite coating Ni/Cr-Cr3C2 were obtained. For all composite layers created, the material properties, such as morphology, phase and chemical compositions, hardness, and Young modulus were investigated. The paper presents the original technological equipment, methodology, and technological parameters for the creation of the composite coating Ni/Cr-Cr3C2.

scholarly journals The Effect of Elemental Composition and Nanostructure of Multilayer Composite Coatings on Their Tribological Properties at Elevated Temperatures

2020 ◽  
Author(s):  
Alexey Vereschaka ◽  
Sergey Grigoriev ◽  
Vladimir Tabakov ◽  
Mars Migranov ◽  
Nikolay Sitnikov ◽  
...  
Keyword(s):  
Elemental Composition ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Elevated Temperatures ◽  
Composite Coatings ◽  
Multilayer Composite ◽  
The Coefficient Of Friction ◽  
The Relationship ◽  
Tribological Parameters ◽  
Adhesion Component

The chapter discusses the tribological properties of samples with multilayer composite nanostructured Ti-TiN-(Ti,Cr,Al,Si)N, Zr-ZrN-(Nb,Zr,Cr,Al)N, and Zr-ZrN-(Zr,Al,Si)N coatings, as well as Ti-TiN-(Ti,Al,Cr)N, with different values of the nanolayer period λ. The relationship between tribological parameters, a temperature varying within a range of 20–1000°C, and λ was investigated. The studies have found that the adhesion component of the coefficient of friction (COF) varies nonlinearly with a pronounced extremum depending on temperature. The value of λ has a noticeable influence on the tribological properties of the coatings, and the nature of the mentioned influence depends on temperature. The tests found that for the coatings with all studied values of λ, an increase in temperature first caused an increase and then a decrease in COF.

Development of Technological Means for Formation of Multilayer Composite Coatings, Providing Increased Resistance of Carbide Tools, for Different Machining Conditions

2013 ◽  
Vol 581 ◽  
pp. 55-61 ◽  
Author(s):  
Vladimir P. Tabakov ◽  
A.S. Vereschaka
Keyword(s):  
Rational Choice ◽  
Tool Life ◽  
Cutting Tool ◽  
Composite Coatings ◽  
Multilayer Coating ◽  
Multilayer Composite ◽  
Carbide Tool ◽  
Carbide Cutting Tool ◽  
Tool Edge ◽  
Technological Means

The present work documents the results of development a methodological and technological means for the formation of multilayer composite coatings essential to increasing the tool life of a cemented carbide cutting tool edge. A methodology, based on of a rational choice of structure, architecture, and properties of a multilayer coating for tool edge working in various cutting conditions, is formulated. The results demonstrate an increase of efficiency of the carbide tool edge life based on the methodology stated above, and are presented here.

scholarly journals A study of the cutting properties and wear mechanism of ceramic edge tools with nanostructure multilayer composite coatings

2014 ◽  
Vol 35 (6) ◽  
pp. 483-488 ◽  
Author(s):  
A. A. Vereshchaka ◽  
E. S. Sotova ◽  
A. D. Batako ◽  
M. I. Sedykh ◽  
A. S. Vereshchaka
Keyword(s):  
Wear Mechanism ◽  
Composite Coatings ◽  
Multilayer Composite
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