Improvement on thermal stability of TiAlSiN coatings deposited by IBAD

Su, Kang; Liu, Dameng; Pang, Hua; Shao, Tianmin

doi:10.1080/02670844.2017.1341110

Cited by 13 publications

(6 citation statements)

References 42 publications

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“…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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“…The PBE functional form under the generalized gradient approximation (GGA) was used for all calculations, and the ultrasoft pseudopotential self-consistent field (SCF) was used to construct the pseudopotential [32][33][34]. The plane wave cutoff energy was 425 eV, and the self-consistent iteration was 500 times.…”

Section: Methodsmentioning

confidence: 99%

First-Principles Study on the Adsorption Characteristics of Corrosive Species on Passive Film TiO2 in a NaCl Solution Containing H2S and CO2

Dong

Zhang

Zhu

et al. 2022

Metals

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The adsorption characteristics of corrosive anions (Cl−, HS−, S2−, HCO3− and CO32−) on TiO2 of TC4 titanium alloy in a NaCl solution containing H2S and CO2 were studied by density functional theory (DFT). The stable adsorption configuration of each corrosive species on the TiO2 (110) surface was obtained by geometric optimization, and the electronic structure and interface binding energy were calculated and analyzed. The results showed that the optimal adsorption positions of Cl−, HS−, S2−, HCO3−and CO32− on TiO2 (110) were all bridge positions. There was a strong charge interaction between the negatively charged Cl, S and O atoms in Cl−, HS−, S2−, HCO3− and CO32− and the positively charged Ti atoms of TiO2. The interface bonding was mainly caused by charge movement from around Ti atoms to around Cl, O, S atoms. The energy levels were mainly caused by the electron orbital hybridization of Cl-3p5, S-3p4, O-2p4 and Ti-3d2. All adsorption configurations were chemical adsorption. The order of influence of the five ions on the stability of TiO2 was S2− > CO32− > Cl− > HS− > HCO3−. Finally, a novel corrosion mechanism was proposed to illustrate the dynamic evolution processes of pits.

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“…On the one hand, the hardness and wear resistance of the coating is improved due to the solid solution reaction of Si atoms and the refinement of grains [4][5][6]. On the other hand, the coating forms a typical nc-MeN/a-Si 3 N 4 structure and the oxidation formation of SiO 2 hinders the diffusion of elements, which enhances the high-temperature oxidation resistance of the coating [7][8][9][10]. However, during the deposition of AlCr-SiN coating, the alloying of Si and AlCrN will reduce the solid solubility limit of c-AlN in AlCrN and promote the formation of h-AlN during high temperature induced by working, consequently reducing the thermal stability of the coating [11,12].…”

Section: Introductionmentioning

confidence: 99%

Improved thermal stability of AlCrSiN coatings base on the template effect of TiAlN layer

Dai

Zhao

Cao

et al. 2022

Surface Engineering

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TiAlN/AlCrSiN multilayer coatings were prepared by arc ion plating. The implements of various thickness ratio (0, 0.89, 1.04, 1.14 and 1.49) of TiAlN/AlCrSiN on microstructure, mechanical properties and thermal stability of TiAlN/AlCrSiN multilayer coatings were investigated. The AlCrSiN single coating without TiAlN inserted layer exhibits a mixed-phase structure of c-AlN and c-CrN, while TiAlN/AlCrSiN multilayer coatings show a single-phase cubic structure. As the thickness ratio of TiAlN/AlCrSiN increases, the critical load of multilayer coating gradually increases up to 99 N, the hardness decreases and the thermal stability improved. The TiAlN/ AlCrSiN multilayer coating with a high thickness ratio of 1.49 was able to maintain a single (200) preferred c-TiAlN/AlCrN solid solution phase structure after annealing at 800°C in Ar for 2 h. The obtained single-phase cubic structure of AlCrSiN at room temperature and the improved thermal stability properties can be explained by the template effect of TiAlN on the AlCrSiN.

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Improvement on thermal stability of TiAlSiN coatings deposited by IBAD

Cited by 13 publications

References 42 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

First-Principles Study on the Adsorption Characteristics of Corrosive Species on Passive Film TiO2 in a NaCl Solution Containing H2S and CO2

Improved thermal stability of AlCrSiN coatings base on the template effect of TiAlN layer

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