Comparative studies on microstructure and mechanical properties of CrN, Cr–C–N and Cr–Mo–N coatings

Choi, Eun Young; Kang, Myung Chang; Kwon, Dong-Hee; Shin, Dong Woo; Kim, Kwang Ho

doi:10.1016/j.jmatprotec.2006.11.090

Cited by 106 publications

(37 citation statements)

References 8 publications

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“…19 Zhou et al 20 highlighted that single-phase cubic structured Mo-Cr-N phases exhibit a high driving force towards an isostructural decomposition, providing a high potential for spinodal decomposition similar to single-phase cubic structured Ti-Al-N. 21 With increasing Mo content, the metallic bonding character within single-phase cubic Mo-Cr-N increases, leading to an improved ductility. 22 Besides the computational studies, 20,23 there are further experimental investigations within the Mo-Cr-N system, 5,[24][25][26][27][28][29] but these often yield contradictory results. For example, the addition of Mo reduces 5,29 or increases 25,27 the mechanical properties of Cr-N.…”

Section: Introductionmentioning

confidence: 99%

“…22 Besides the computational studies, 20,23 there are further experimental investigations within the Mo-Cr-N system, 5,[24][25][26][27][28][29] but these often yield contradictory results. For example, the addition of Mo reduces 5,29 or increases 25,27 the mechanical properties of Cr-N. Furthermore, all experimental studies [25][26][27]30 focussed on the Cr-rich side with Cr/(MoþCr) atomic ratios above 0.5.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the addition of Mo reduces 5,29 or increases 25,27 the mechanical properties of Cr-N. Furthermore, all experimental studies [25][26][27]30 focussed on the Cr-rich side with Cr/(MoþCr) atomic ratios above 0.5.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Klimashin

Riedl

Primetzhofer

et al. 2015

Journal of Applied Physics

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Although many research activities concentrate on transition metal nitrides, due to their excellent properties, only little is known about Mo–N based materials. We investigate in detail the influence of Cr on the structural evolution and mechanical properties of Mo–N coatings prepared at different nitrogen partial pressures. The chemical composition as well as the structural development of coatings prepared with N2-to-total pressure ratios (pN2/pT) of 0.32 and 0.44 can best be described by the quasi-binary Mo2N–CrN tie line. Mo2N and CrN are face centered cubic (fcc), only that for Mo2N half of the N-sublattice is vacant. Consequently, with increasing Cr content, also the N-sublattice becomes less vacant and the chemical composition of fcc single-phase ternaries can be described as Mo1−xCrxN0.5(1+x). These coatings exhibit an excellent agreement between experimentally and ab initio obtained lattice parameters of fcc Mo1−xCrxN0.5(1+x). When increasing the N2-to-total pressure ratio to pN2/pT = 0.69, the N-sublattice is already fully occupied for Cr-additions of x ≥ 0.4, as suggested by elastic recoil detection analysis and lattice parameter variations. The latter follows the ab initio obtained lattice parameters along the quasi-binary MoN–CrN tie line for x ≥ 0.5. The single-phase fcc coating with Cr/(Mo+Cr) of x ∼0.2, prepared with pN2/pT = 0.32, exhibits the highest hardness of ∼34 GPa among all coatings studied.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Klimashin

Riedl

Primetzhofer

et al. 2015

Journal of Applied Physics

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“…Obviously, in air, CrCN coatings exhibited a lower friction coefficient and wear rate than CrN after C incorporation [68,69], and their tribological properties were enhanced as the carbon content increased [70]. Nevertheless, for the tribological properties of CrCN coatings in water, Wang et al [71] demonstrated that the tribological performance of CrCN coatings was deteriorated with increasing C content.…”

Section: Influence Of Microstructurementioning

confidence: 99%

Progress in Tribological Properties of Nano-Composite Hard Coatings under Water Lubrication

Wang

Zhou

2017

Lubricants

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Abstract:The tribological properties, under water-lubricated conditions, of three major nano-composite coatings, i.e., diamond-like carbon (DLC or a-C), amorphous carbon nitride (a-CN x ) and transition metallic nitride-based (TiN-based, CrN-based), coatings are reviewed. The influences of microstructure (composition and architecture) and test conditions (counterparts and friction parameters) on their friction and wear behavior under water lubrication are systematically elucidated. In general, DLC and a-CN x coatings exhibit superior tribological performance under water lubrication due to the formation of the hydrophilic group and the lubricating layer with low shear strength, respectively. In contrast, TiN-based and CrN-based coatings present relatively poor tribological performance in pure water, but are expected to present promising applications in sea water because of their good corrosion resistance. No matter what kind of coatings, an appropriate selection of counterpart materials would make their water-lubricated tribological properties more prominent. Currently, Si-based materials are deemed as beneficial counterparts under water lubrication due to the formation of silica gel originating from the hydration of Si. In the meantime, the tribological properties of nano-composite coatings in water could be enhanced at appropriate normal load and sliding velocity due to mixed or hydrodynamic lubrication. At the end of this article, the main research that is now being developed concerning the development of nano-composite coatings under water lubrication is described synthetically.

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“…3,4 In that observation aluminium fly, ash composite has improved their mechanical properties by adding some suitable percentage of reinforcement. 5,6 In some other literature, there will be changes in mechanical properties by mixing reinforcements like SiC, Ti, Albite, graphite etc. 7,8 The tensile and compressive property was improved by adding AA6061 with different weight percentage of albite and graphite.…”

Section: Introductionmentioning

confidence: 99%

Production and Microstructure Characterization of Aa6061 Matrix Activated Carbon Particulate Reinforced Composite by Friction Stir Casting Method

2017

RJC

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The purpose of this work is to produce an aluminum metal matrix composite with high strength, low weight with good thermal resistance. For preparing metal matrix composite AA6061 is used as matrix and activated carbon is used as reinforcement and it is cast using modified stir casting technique. The reinforcement activated carbon is added in various weight ratios from 2% to 8% of the matrix. The casted metal matrix composites are taken as per ASTM standard by using wire cut process for various tests. Microstructural test like SEM, EDAX, XRD and thermal tests like Fourier Transform infrared spectroscopy and Thermogravimetric tests were taken .From testing results, it is noted that increase in the percentage of activated carbon up to 6%, shows a significant mixing of matrix and reinforcement it is evident in microstructure test result and also shows there is the formation of voids. Thermogravimetric proves the fabricated composite have good thermal resistance by adding activated carbon as reinforcement.

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Comparative studies on microstructure and mechanical properties of CrN, Cr–C–N and Cr–Mo–N coatings

Cited by 106 publications

References 8 publications

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Composition driven phase evolution and mechanical properties of Mo–Cr–N hard coatings

Progress in Tribological Properties of Nano-Composite Hard Coatings under Water Lubrication

Production and Microstructure Characterization of Aa6061 Matrix Activated Carbon Particulate Reinforced Composite by Friction Stir Casting Method

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