A comparative study of the oxidation behavior of Cr2N and CrN coatings

Qi, Zhengbing; Liu, B.; Wu, Zhengtao; Zhu, Feixiang; Wang, Z.C.; Wu, Chong

doi:10.1016/j.tsf.2013.01.031

Cited by 78 publications

(53 citation statements)

References 26 publications

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“…This meant that a mass of tribo-oxides formed on worn surfaces. As referred above [12], the oxidation of PVD CrN coating material started at the temperature around 300 • C. More importantly, a few W were detected in the worn area, indicating that the oxide film can prevent the adhesion between CrN coating and WC ceramic ball and possess self-lubricant function. Thus, the friction coefficient and width of wear scars decreased at 315 • C. It is clear that wear of CrN coating at temperatures equal or above 315 • C was mild oxidative wear.…”

Section: Morphology and Eds Results Of Worn Surfacesmentioning

confidence: 70%

“…It was found that the tribological properties of CrN coatings at high temperature were predominantly influenced by formation of a chromium oxide tribo-layer. Qi et al [12] studied the tribo-oxide behavior of CrN and Cr 2 N coatings. The dense Cr 2 O 3 scales both formed on the Cr 2 N and CrN coatings after tribological tests at temperatures above 300 • C. Mandrino et al [13] observed that the chromium-oxide films formed on CrN coatings were very thin (in 10-100 nm region).…”

Section: Introductionmentioning

confidence: 99%

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Wear Transition of CrN Coated M50 Steel under High Temperature and Heavy Load

Zhang

Tang

2017

Coatings

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Abstract:The combination of high temperature indentation and wear test provides a useful way to investigate wear of CrN coating and wear transition mechanisms. In this paper, the high temperature hardness of CrN coatings and load bearing capacity, L b , of CrN coated M50 disks were determined from spherical indentation at temperatures up to 500 • C. Wear tests with different normal loads were carried out at the same temperatures as the indentation tests. The results show that wear mechanism of CrN coating changes with external load, P, and temperature, T. Under a tested condition of P < L b and T < 315 • C, abrasive is the dominant wear mechanism for CrN coating. Under a tested condition of P < L b and T ≥ 315 • C, wear of CrN coating transitions into mild oxidation wear due to the lubricating effect of chromium oxide film. Under a tested condition of P > L b and T < 315 • C, wear of CrN coating was controlled by coating fracture. Under a tested condition of P > L b and T ≥ 315 • C, wear of CrN coating transitions into the severe wear mode, due to the tensile fracture of oxidation films, thereby leading to adhesion between CrN coating and tribo-counterpart. The presented method can be helpful in predicting permissible load and working temperature in tribological applications of CrN coating.

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Section: Morphology and Eds Results Of Worn Surfacesmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Wear Transition of CrN Coated M50 Steel under High Temperature and Heavy Load

Zhang

Tang

2017

Coatings

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“…than TiN and TiAlN coatings [4]. CrN coatings exhibit lower friction coefficient, higher toughness, better corrosion and oxidation resistance, which make them promising candidates as protective coatings for machining tools, in die casting, metal forming and engineering components to increase productivity and tool life compared with widely used TiN coatings [5][6][7][8][9][10]. Conventionally, thermo reactive deposition technique (TRD) is a high temperature process, operating at 800-1200 °C.…”

Section: Introductionmentioning

confidence: 99%

Tribological properties of CrN coatings deposited by nitro-chromizing treatment on AISI D2 steel

Durmaz¹,

Kılınç²,

Abakay³

et al. 2015

AIP Conference Proceedings

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“…Thin film of chromium nitride exists in cubic (CrN) and hexagonal (Cr 2 N) phases and its properties are therefore dependent on the crystalline phase [1]. The growth of particular crystalline phases primarily depends on the deposition conditions [2]. Surface morphology/roughness which can modify the thin film properties play an important role in applications, such as metallization and wear-resistant coatings [3].…”

Section: Introductionmentioning

confidence: 99%

Structural and optical analysis of Cr2N thin films prepared by DC magnetron sputtering

Khan

Mahmood²,

Shah³

et al. 2015

Int J Miner Metall Mater

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Chromium nitride (Cr 2 N) thin films were prepared by a DC magnetron sputtering technique. The deposition temperature was raised from 50 to 300°C, and its influence on the film structure and refractive index was investigated. X-ray diffraction analysis shows that the crystalline structure of the films transforms from the (101) to (002) oriented hexagonal Cr 2 N phase as the increase of substrate temperature above 50°C, and a highly textured film grows at 100°C. An empirical relation between the crystalline orientation and infrared active modes of the films is obtained, i.e., the Fourier transform infrared (FTIR) spectrum of the film prepared at 50°C exhibits only A 1 (TO) mode. The prominent peak in the FTIR spectra of the film prepared above 50°C is assigned to the E 1 (TO) mode and is correlated with the (002) or c-axis oriented hexagonal wurtzite phase of Cr 2 N. In the surface analysis of atomic force microscopy, a transformation from the featureless surface to columnar-type morphology is observed with the increase of substrate temperature from 50 to 100°C, exhibiting c-axis oriented crystallite growth. A further increase in substrate temperature to 200°C causes the c-axis crystallites to merge, resulting in the formation of voids. The refractive index (n) of the deposited films is obtained using spectroscopic ellipsometry.

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A comparative study of the oxidation behavior of Cr2N and CrN coatings

Cited by 78 publications

References 26 publications

Wear Transition of CrN Coated M50 Steel under High Temperature and Heavy Load

Wear Transition of CrN Coated M50 Steel under High Temperature and Heavy Load

Tribological properties of CrN coatings deposited by nitro-chromizing treatment on AISI D2 steel

Structural and optical analysis of Cr2N thin films prepared by DC magnetron sputtering

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