Effects of Si content on microstructure and mechanical properties of TiAlN/Si 3 N 4 -Cu nanocomposite coatings

Chi, Feng; Hu, Shuilian; Yuanfei, Jiang; Namei, Wu; Li, Mingsheng; Li, Xin; Zhu, Shenglong; Wang, Fuhui

doi:10.1016/j.apsusc.2014.09.041

Cited by 29 publications

(8 citation statements)

References 34 publications

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“…With Si added, TiAlSiN coatings have better mechanical properties than TiAlN due to the microstructure of TiAlSiN, who's crystalline nc-TiAlN phases are wrapped in amorphous a-Si3N4 phase at nanometer scale [8,9]. This kind of microstructure can refine grains of TiAlN, and help improve the hardness of the coatings due to the Hall Patch effect [10][11][12]. Besides, a lot of papers demonstrate that the high-temperature oxidation resistance [13,14], thermal stability [15], and tribological behavior [16][17][18] of the coatings are improved after Si is added to TiAlN coatings.…”

Section: Introductionmentioning

confidence: 99%

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Han

et al. 2019

Metals

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To enhance the cutting performance of TiAlSiN coated cemented carbide tools by inserting Ti interlayers and to explore their mechanism, TiAlSiN/Ti multilayer coatings with different Ti thicknesses, including 0 nm, 25 nm, 50 nm, 100 nm, and 150 nm, were deposited onto cemented carbide (WC-10 wt%, Co) substrates by high power impulse magnetron sputtering (HiPIMS). The microstructure, hardness, grain orientation, residual stress, adhesion, and toughness of those coatings were measured, and the cutting performance against Inconel 718 was analyzed. Meanwhile, finite element method (FEM) indentation simulations were performed to gain detailed insight into the effects of Ti interlayer thickness on mechanical properties of TiAlSiN/Ti multilayer coatings. Results demonstrated that mechanical properties of TiAlSiN multilayer coatings were significantly changed after the Ti interlayer was introduced, and the multilayer coating #M2 with 25 nm Ti layer showed the excellent toughness and adhesion without sacrificing hardness too much. As Ti interlayer thickness increased, both toughness and adhesion decrease owing to the plastic mismatch between individual layers, and these changes were discussed detailedly with finite element method. Moreover, the result of the cutting experiment also revealed that the tool flank wear Vb can be reduced by the multilayer structure. This improvement is believed to be due to the increasing toughness, which alleviated the damage caused by the continuous impact load of hard phases generated by Inconel 718 during cutting.

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Section: Introductionmentioning

confidence: 99%

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Han

et al. 2019

Metals

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“…According to a previous paper [5,23], the X-ray diffraction patterns (XRD) of coatings deposited with different dopant concentrations have a mixed orientation with planes belonging to the FCC-NaCl structure located at diffraction peaks observed at 2θ values of 37.5 • , 43.9 • , and 78.04 • correspond to the (111), (200), and (222) planes of TiAlCrN with different silicon content, respectively. Some researchers [24,25] have shown that the addition of Si in the nitride structure can be given by (i) the substitute Si atoms in the crystal structure, and (ii) the formation of silicon nitride when there is an excess of silicon, which is an amorphous structure.…”

Section: Structure and Morphologymentioning

confidence: 99%

Influence of Si Addition on the Chemical and Tribological Performance of TiAlCrN Coating Deposited by Co-Sputtering

Ardila,

Dueñas,

Orozco

et al. 2023

Crystals

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In this work, nanostructured TiAlCrN coatings were deposited on a WC-Co substrate using a co-sputtering process varying the silicon composition on the coatings. The influence of silicon content on the mechanical, chemical, and tribological performance of the coatings was studied. The hardness increases from 11 to 16 GPa with the Si content; also, Young’s modulus increases from 260 to 295 GPa. The H/E ratio, which is a measure of materials’ ability to take the strain before deformation, is also increased with the increase in Si content, suggesting increased toughness. XPS analysis reveals that the coatings present titanium, aluminum, chromium, and silicon nitrides. The tribological behavior of the coatings was conducted through ball-on-disc tests, in which the results show that the coefficients of friction range from 0.15 to 0.55, with the lowest for the samples with the highest Si content. This behavior is benefited by the formation of oxynitride species, identified by XPS, which acts as lubricating layers and diffusion barriers. TiAlCrSixN coating presents a potential application for severe wear owing to its tribological performance.

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“…Better resistance to cracking could be obtained for the highest H 3 =E * ² values [78,87,100,101]. Further details on wear mechanisms are given in [99,[102][103][104][105].…”

Section: General Wear Mechanismsmentioning

confidence: 99%

Ti-Al-N-Based Hard Coatings: Thermodynamical Background, CVD Deposition, and Properties. A Review

Uny¹,

Blanquet²,

Schuster³

et al. 2019

Coatings and Thin-Film Technologies

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For several decades, the increasing productivity in many industrial domains has led to a significant and ever-increased interest to protective and hard coatings. In this context, titanium-aluminum nitrides were developed and are now widely used in a large range of applications, due to their high hardness, good thermal stability, and oxidation resistance. This chapter reviews the thermodynamical characteristics of the Ti-Al-N system by reporting the progress made in the description of the Ti-Al-N phase diagram and the main mechanical and chemical properties of Ti 1Àx Al x N-based coatings. As a metastable phase, the existence of the fcc-Ti 1Àx Al x N depends on particular process parameters, allowing stabilizing this desirable solid solution. The influence of process parameters, with a particular interest for chemical vapor deposition (CVD) methods, on morphology and crystallographic structure is then described. The structure of Ti 1Àx Al x N thin films depends also on the aluminum content as well as on the annealing temperature, due to the spinodal nature of the Ti-Al-N system. These changes of crystallographic structure can induce an improvement of the hardness, oxidation resistance, and wear behavior of these coatings. The main mechanical and chemical properties of physical vapor deposition (PVD) and CVD Ti 1Àx Al x N-based coatings are also described.

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Effects of Si content on microstructure and mechanical properties of TiAlN/Si 3 N 4 -Cu nanocomposite coatings

Cited by 29 publications

References 34 publications

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

The Performance of TiAlSiN Coated Cemented Carbide Tools Enhanced by Inserting Ti Interlayers

Influence of Si Addition on the Chemical and Tribological Performance of TiAlCrN Coating Deposited by Co-Sputtering

Ti-Al-N-Based Hard Coatings: Thermodynamical Background, CVD Deposition, and Properties. A Review

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