Tribological properties of duplex Cr–Si–N coatings on SS410 steel

“…37 With increasing nitrogen partial pressure and nitriding temperature, the H/E ratio and H 3 /E* 2 ratio are increased as shown in the Table I. The measured H 3 /E* 2 ratios for the Cr-Si-N films are higher than those reported by Benkahoul et al, 13 implying that the Cr-Si-N films prepared by duplex surface treatment exhibit a higher wear resistance.…”

Section: B Mechanical Propertiesmentioning

confidence: 72%

“…9,10 The principal disadvantage of CrN is its relatively low hardness (i.e., 12-18 GPa), which is unfavorable for abrasive wear resistance. [11][12][13] Recently, the addition of other elements, such as silicon (Si) in MeN systems has been actively explored. 14,15 One of those ternary film systems, Cr-Si-N, has shown promising mechanical properties such as high microhardness and good wear resistance due to its nanocomposite microstructure comprising nanocrystalline CrN and amorphous silicon nitride.…”

Section: Introductionmentioning

confidence: 99%

Structure-property-performance of nanocomposite Cr–Si–N films synthesized by a duplex surface treatment technique

Lai

Xie

et al. 2011

J. Mater. Res.

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Nanocomposite Cr-Si-N films were prepared on to Ti-6Al-4V substrates by a novel duplex surface treatment technique. Coatings consisting of a Cr 3 Si surface layer were deposited using a double cathode glow plasma and subsequent surface plasma nitriding. The surface topography, chemical composition, and microstructure of these treated alloys were analyzed by a variety of surface characterization techniques. The resulting Cr-Si-N films consisted of nanocrystallite CrN grains embedded in amorphous SiN x phase. Nanoindentation tests showed that with increasing nitrogen partial pressure the hardness of the Cr-Si-N films increased and the elastic modulus decreased. Wear experiments showed that the Cr-Si-N films produced at a nitrogen partial pressure of 4.5Pa and 800°C possessed the lowest wear rate and friction coefficient. Moreover, electrochemical measurements in 5 wt% HCl solution indicated that the Cr-Si-N films acted as an effective barrier against acid attack on the alloys.

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“…The performance of such coatings can be further improved by doping a third metal or nonmetal element into the CrN-based coatings, such as Al [3,9], Mo [10], Zr [11], Cu [12], C [13], Si [14] and Al-Si [15,16] elements. These elements have all been previously used to modify the structures and properties of the CrN coatings.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical, Oxidation and Corrosion Properties of the Cr-Al-Si-N Coatings Deposited by a Hybrid Sputtering System

et al. 2017

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CrN and Cr-Al-Si-N coatings were deposited on SUS304 and Si-wafers by a hybrid coating system. The Cr and Al-Si target were connected to the cathode arc ion plating (AIP) and high power impulse magnetron sputtering (HiPIMS), respectively. Various Al and Si contents in the coatings were obtained by changing the power of Al-Si target from 0 to 1 kW. The results demonstrated a face-centered cubic structure in all of the coatings. With increasing Al-Si target power, both the density and mean diameter of the macroparticles on the coating surface declined. As Al and Si contents increased, the microstructure of the Cr-Al-Si-N coatings evolved from a dense column structure, to a finer grain column structure, and then to a compact granular-like structure. The hardness of the coatings increased from 21.5 GPa for the pure CrN coating, to a maximum value of~27 GPa for the Cr-Al-Si-N coating deposited at 0.4 kW, which was mainly attributed to the solid solution strengthening and increased residual stress. The addition of Al and Si contents led to enhanced wear resistance against alumina balls at both room and elevated temperatures. Meanwhile, the Cr-Al-Si-N coatings also exhibited an excellent resistance to high-temperature oxidation at 800 and 1000 • C, and improved corrosion resistance, as compared with CrN coatings.

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Tribological properties of duplex Cr–Si–N coatings on SS410 steel

Cited by 48 publications

References 30 publications

Structural and mechanical properties of compositionally gradient CrNx coatings prepared by arc ion plating

Structural and mechanical properties of compositionally gradient CrNx coatings prepared by arc ion plating

Structure-property-performance of nanocomposite Cr–Si–N films synthesized by a duplex surface treatment technique

Microstructure, Mechanical, Oxidation and Corrosion Properties of the Cr-Al-Si-N Coatings Deposited by a Hybrid Sputtering System

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