Properties of Cutting Inserts With Different PVD Coatings

Mrkvica, Ivan; Petrů, Jana; Sleha, V.; Neslusan, M.; Jurko, Jozef; Panda, Anton

doi:10.17973/mmsj.2015_06_201501

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…Vapor deposition coating technology is a process that causes the formation of coating materials on the surfaces of solids as a result of specific exploitation of gaseous, vaporous or plasma states [1][2][3][4][5][6]. One of the unconventional techniques for producing coatings is the method of diffusion bonding of thin films with the base material, thereby producing coatings [7,8].…”

Section: Introductionmentioning

confidence: 99%

Tests for Applying Coatings Based on Aluminum and Silver on Alnico Alloys

BAŃKOWSKI,

MŁYNARCZYK,

SZWED

et al. 2023

METAL Conference Proeedings

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The paper presents preliminary research on the application of coatings by the PVD method. The coatings were deposited on an AlNiCo alloy with a suitably pre-prepared surface. Two different coating materials were used. Coatings based on pure silver and pure aluminum were applied. The tests included the assessment of the influence of the coating deposition time on the final thickness of the coatings. The samples after the deposition process were specially prepared for observation under the microscope. Scanning microscopy examinations made it possible to assess the connections of the obtained coatings with the substrate.

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Section: Introductionmentioning

confidence: 99%

Tests for Applying Coatings Based on Aluminum and Silver on Alnico Alloys

BAŃKOWSKI,

MŁYNARCZYK,

SZWED

et al. 2023

METAL Conference Proeedings

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“…The main goal for the design of the fixture was to increase the capacity of the coating machine for some types of coated tools, e.g., mainly the economic aspect [11]. The fixture has been designed so that it can be fitted into existing stainless-steel housings without the necessity to change the rotary holder itself.…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency of PVD Coating Process by Applying an Additional Rotation

2022

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This article analyzes PVD coatings (physical vapor deposition—the coating material is vaporized and deposited by sputtering or arc evaporation, and PVD coatings are applied at lower substrate temperatures and thus can be applied to a wider range of substrates) applied to samples which are located in a fixture. This fixture enables additional rotation of the sample via the coating process. The fixture allows an increase of coated tools in one batch, and therefore an increase of the current capacity of the coating machine. The introductory section of the article describes the process of product design, including its modifications. The experimental section is focused on the functionality checking of the proposed design. The coating process was carried out on a machine named INNOVA. To guarantee the correct coating application during the process, it is necessary to research the coating thickness and the chemical composition of the samples and compare these results with the results of samples which were coated without using a designed fixture. Round bars with a diameter of 10 mm were chosen as test samples. On these samples, a FUTURA monolayer was applied on a TiAlN base. Chemical composition and coating thickness were evaluated using a scanning electron microscope (SEM). Using a fixture with a fourth rotation, the same chemical composition and coating thickness were achieved as those samples which were coated in a process without the use of a fourth rotation. Therefore, it was possible to confirm a capacity increase of the coating machine.

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“…During the inspection of the microstructures of both single-and dual-layer coatings of AlCrN, TiAlN, and AlCrN/TiAlN using plasma-assisted PVD [31], AlCrN coating was observed to be consistent and extremely dense, containing limited micro-voids when compared to AlTiN coating which was non-uniform and porous. AlCrN coating possess good adhesion to substrate and better chemical stability at elevated temperatures [32].…”

Section: Introductionmentioning

confidence: 99%

Machinability evaluation of coated carbide inserts in turning of super-duplex stainless steel

et al. 2020

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Super-duplex stainless steel (SDSS) is a class of materials that possess excellent mechanical properties with enhanced corrosion resistance. Given the presence of several alloying elements and the existence of a two-phase microstructure, it can be argued that it is one of the few materials that are difficult to machine. Therefore, the present study attempts to establish an improved understanding of the state-of-the-art development in insert coatings capable of providing excellent tribological and thermal resistance properties. In this work, monolayers of AlTiN and AlCrN are PVD coated on commercial carbide inserts so as to compare and contrast the performance of nitride coatings in the dry turning of SDSS. This study evaluates the machining performance in terms of tool wear, chip characteristics, tool life and surface finish. The coated surfaces were observed through optical microscope, profilometers, scanning electron microscope and energydispersive X-ray spectroscopy to evaluate the morphological changes. The results of the work indicate that machining with PVD-coated AlTiN insert showed longer tool life, better surface finish and smaller chip thickness when compared to AlCrN-coated and uncoated inserts at low to moderate cutting speeds. The dominant wear mechanism was found to be adhesion, where during turning long continuous chips were formed for uncoated inserts and small segmented chips were formed for coated inserts at different machining parameters. Contrarily, the study also purportedly explores the improved performance of AlCrN-coated inserts over AlTiN-coated inserts at high cutting speed.

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Properties of Cutting Inserts With Different PVD Coatings

Cited by 4 publications

References 2 publications

Tests for Applying Coatings Based on Aluminum and Silver on Alnico Alloys

Tests for Applying Coatings Based on Aluminum and Silver on Alnico Alloys

High-Efficiency of PVD Coating Process by Applying an Additional Rotation

Machinability evaluation of coated carbide inserts in turning of super-duplex stainless steel

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