Features of self‐organization in nanostructuring PVD coatings on a base of polyvalent metal nitrides under severe tribological conditions

Ковалев, А. И.; Wainstein, Dmitry; Fox-Rabinovich, German; Veldhuis, Stephen C.; Yamamoto, Kenji

doi:10.1002/sia.2733

Cited by 14 publications

(16 citation statements)

References 8 publications

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“…It has been found that there are two types of tribofilms that are formed on the frictional body as a result of structural modification and interaction with the environment: (1) super-ductile and lubricating films [12]; and (2) tribo-ceramics with thermal barrier properties and increased hardness and strength [10,24,26,27,[30][31][32][33][34][35][36][37][38][39]. Tribofilms (SS) of the first type (SS-I) are observed as a result of structural activation marked by an increase in the density of atomic defects at the surface.…”

Section: Thermodynamics Of Tribofilmsmentioning

confidence: 99%

Tribofilm Formation As a Result of Complex Interaction at the Tool/Chip Interface during Cutting

Fox-Rabinovich

Гершман²,

Hakim

et al. 2014

Lubricants

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Tribofilms are dynamic structures that form at the interface during frictional sliding. These films play a significant role in friction control, particularly under heavy loaded/high temperature conditions, such as those found at the cutting tool/chip interface. The thermodynamic aspects of tribofilm formation are discussed here. Thermodynamic analysis of entropy production during friction shows that there are two types of tribofilms that affect the wear behavior of a cutting tool: (1) tribofilms forming as a result of the surface modification of the cutting tools with further tribo-oxidation; and (2) tribofilms that form as a result of material transfer from the contacting frictional body (the workpiece) during the tool/chip interaction. Experimental examples are presented, outlining the beneficial role of both types of tribofilms.

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Section: Thermodynamics Of Tribofilmsmentioning

confidence: 99%

Tribofilm Formation As a Result of Complex Interaction at the Tool/Chip Interface during Cutting

Fox-Rabinovich

Гершман²,

Hakim

et al. 2014

Lubricants

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“…Contributions include: Bershadsky [122], Kostetsky [123], Fox-Rabinovich et al [124][125][126], Wilson and Alpas [127], Usychenko [128], Figueiredo et al [129] and Kovalev et al [130].…”

Section: Figure 12mentioning

confidence: 99%

On the Thermodynamics of Friction and Wear―A Review

Amiri

Khonsari

2010

Entropy

165

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“…These meta-stable phases have been observed on the worn surface of coated tools [32,33], and uncoated tools [18] during different cutting processes. Photoelectron lines might be slightly shifted from the binding energy values of pure elements in various offsets (W-O in Figure 4a and Cr2O3 in Figure 4b), which indicates various degrees of oxidation with the formation of nonequilibrium phases and "nonphase" clusters [33].…”

Section: Adaptive Behaviourmentioning

confidence: 95%

Influence of Workpiece Material on Tool Wear Performance and Tribofilm Formation in Machining Hardened Steel

et al. 2016

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In addition to the bulk properties of a workpiece material, characteristics of the tribofilms formed as a result of workpiece material mass transfer to the friction surface play a significant role in friction control. This is especially true in cutting of hardened materials, where it is very difficult to use liquid based lubricants. To better understand wear performance and the formation of beneficial tribofilms, this study presents an assessment of uncoated mixed alumina ceramic tools (Al2O3+TiC) in the turning of two grades of steel, AISI T1 and AISI D2. Both workpiece materials were hardened to 59 HRC then machined under identical cutting conditions. Comprehensive characterization of the resulting wear patterns and the tribofilms formed at the tool/workpiece interface were made using X-ray Photoelectron Spectroscopy and Scanning Electron Microscopy. Metallographic studies on the workpiece material were performed before the machining process and the surface integrity of the machined part was investigated after machining. Tool life was 23% higher when turning D2 than T1. This improvement in cutting tool life and wear behaviour was attributed to a difference in: (1) tribofilm generation on the friction surface and (2) the amount and distribution of carbide phases in the workpiece materials. The results show that wear performance depends both on properties of the workpiece material and characteristics of the tribofilms formed on the friction surface.

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Features of self‐organization in nanostructuring PVD coatings on a base of polyvalent metal nitrides under severe tribological conditions

Cited by 14 publications

References 8 publications

Tribofilm Formation As a Result of Complex Interaction at the Tool/Chip Interface during Cutting

Tribofilm Formation As a Result of Complex Interaction at the Tool/Chip Interface during Cutting

On the Thermodynamics of Friction and Wear―A Review

Influence of Workpiece Material on Tool Wear Performance and Tribofilm Formation in Machining Hardened Steel

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