Effect of TiAl-based interlayer on the surface morphology and adhesion of nanocrystalline diamond film deposited on WC–Co substrate by hot filament CVD

Park, Jong‐Keuk; Lee, Hak‐Joo; Lee, Wook‐Seong; Baik, Young‐Joon

doi:10.1016/j.surfcoat.2014.09.053

Cited by 18 publications

(6 citation statements)

References 20 publications

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“…The erosion resistance of the TiAl intermetalic / AlCrTiN composite layer was investigated with the use of methodology presented in [6]. Small (40-80 µm), spherical silica particles, used as an erodent material, were ejected from the nozzle at the air pressure of 4x10 5 Pa, with the angle of 90 o , at the time of 9 min. After the erosion test, the volume of the removed material was measured with the use of MG140 confocal profiler by DUCOM and Surface Imaging & Metrology Software MoutainsMap 7.0.…”

Section: Erosion Testmentioning

confidence: 99%

“…According to the scheme of nitrided layer / PVD coating composite layers produced on steel substrates [3−4], an example of composite layer with great opportunities in the formation of operational properties of aluminum alloys can be the Ti-Al intermetalic / PVD coating [5]. The role of the Ti-Al intermetallic layer is to increase the hardness and plastic deformation resistance of the surface zone of the aluminum alloy, which significantly improves adhesion of the hard PVD coating.…”

Section: Introductionmentioning

confidence: 99%

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Composite Layers TiAl<sub>Intermetallic</sub>/PVD Coating Obtained by Hybrid Surface Treatment Technology on Aluminium Alloys

Smolik

Mazurkiewicz

Kacprzyńska–Gołacka

et al. 2015

SSP

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The paper presents the results of tests on an “intermetallic layer TiAl / coating AlCrTiN" hybrid layer, which was obtained using a hybrid method combining magnetron Sputtering, diffusion, and arc evaporation in a single technological process. The hybrid layer obtained was subjected to studies on morphology and chemical composition using the TM3000 scanning electron microscope. Additionally, hardness and Young's modulus as a function of distance from the surface were measured using a nanohardness tester CSM. Based on the analysis of the results obtained, the authors suggest the mechanism of layer growth in the technological process. The composite layer was also subjected to wear resistance using the ball-cratering method and erosion resistance tests using the glass powder. The obtained results showed that the Ti-Al intermetallic / AlCrTiN hybrid layer significantly increases resistance to abrasion as well as erosion wear resistance of the Ak12 alloy.

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Section: Erosion Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Composite Layers TiAl<sub>Intermetallic</sub>/PVD Coating Obtained by Hybrid Surface Treatment Technology on Aluminium Alloys

Smolik

Mazurkiewicz

Kacprzyńska–Gołacka

et al. 2015

SSP

View full text Add to dashboard Cite

show abstract

“…Available methods used to mitigate this problem include cobalt-free treatment [ 8 ], changing the substrate composition [ 9 ], texturing the substrate surface [ 10 , 11 , 12 ], and adding intermediate layers [ 13 , 14 , 15 , 16 ]. Among them, adding an intermediate layers is currently a commonly used method to improve interface bonding performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Adding Intermediate Layers on the Interface Bonding Performance of WC-Co Diamond-Coated Cemented Carbide Tool Materials

Yang

Yue

et al. 2023

Molecules

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The interface models of diamond-coated WC-Co cemented carbide (DCCC) were constructed without intermediate layers and with different interface terminals, such as intermediate layers of TiC, TiN, CrN, and SiC. The adhesion work of the interface model was calculated based on the first principle. The results show that the adhesion work of the interface was increased after adding four intermediate layers. Their effect on improving the interface adhesion performance of cemented carbide coated with diamond was ranked in descending order as follows: SiC > CrN > TiC > TiN. The charge density difference and the density of states were further analyzed. After adding the intermediate layer, the charge distribution at the interface junction was changed, and the electron cloud at the interface junction overlapped to form a more stable chemical bond. Additionally, after adding the intermediate layer, the density of states of the atoms at the interface increased in the energy overlapping area. The formant formed between the electronic orbitals enhances the bond strength. Thus, the interface bonding performance of DCCC was enhanced. Among them, the most obvious was the interatomic electron cloud overlapping at the diamond/SiCC-Si/WC-Co interface, its bond length was the shortest (1.62 Å), the energy region forming the resonance peak was the largest (−5–20 eV), and the bonding was the strongest. The interatomic bond length at the diamond/TiNTi/WC-Co interface was the longest (4.11 Å), the energy region forming the resonance peak was the smallest (−5–16 eV), and the bonding was the weakest. Comprehensively considering four kinds of intermediate layers, the best intermediate layer for improving the interface bonding performance of DCCC was SiC, and the worst was TiN.

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“…Other research has been carried out to improve the adhesion of thick (1 µm) C-based coating (DLC coating) on steel substrates [17,18]. Various methods such as deposition of metal-or ceramic-based interface adhesive layers [19,20], modification of substrate surface roughness by sandblasting or grit blasting [21], and removal of loosely bound alloy components from the surface by chemical or ion etching [22] can be applied to prepare a hard alloy surface such as WC-Co substrate to increase the deposited coating adhesion strength to the substrates. Ion etching using Ar + ions with energy of 1.5 to 3.5 keV have been applied to remove loosely bound nano-diamond particles from WC-Co substrate surfaces to improve the mechanical bonding between the diamond film and the WC-Co substrate [22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Pre-Treatment on the Adhesion between HiPIMS Thick Cu:CuCNx Coating and WC-Co Shim

2022

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High-power impulse magnetron-sputtering thick metal/carbon–nitride-doped metal-matrix multilayer nano-composite coating can be applied to cutting-tool holder components to improve cutting insert’s life. One of the challenges of such an add-on solution is the poor adhesion between the thick coating and the hard alloy substrate, such as WC-Co shim. This work presents a study on WC-Co substrate surface preparation methods for HiPIMS coating and its adhesion improvement. Three mechanical surface pretreatment methods were investigated: machining (grinding), diamond polishing, and grit blasting. White-light interferometry was used for substrate surface texture measurement before and after pretreatment. It was demonstrated that, compared to machining and diamond polishing, grit blasting can significantly improve the interface adhesion between the ~200 µm-thick Cu:CuCNx coating and WC-Co shim. Grit blasting was also found to be beneficial for improving the cutting insert’s life in the external turning process. In turning tests, the coating lifetime for grit-blasted shim was more than 90 minutes, whereas the coating lifetimes for machined shim (conventional shim) and diamond-polished shim were ~85 minutes and ~70 minutes, respectively. Further, by comparing the HiPIMS gradient chromium pre-layer between the coating and substrate for the different shims, the study also explained that the quasi-isotropic surface texture of grit-blasted shim is more advantageous for coating–substrate interface adhesion.

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Effect of TiAl-based interlayer on the surface morphology and adhesion of nanocrystalline diamond film deposited on WC–Co substrate by hot filament CVD

Cited by 18 publications

References 20 publications

Composite Layers TiAl<sub>Intermetallic</sub>/PVD Coating Obtained by Hybrid Surface Treatment Technology on Aluminium Alloys

Composite Layers TiAl<sub>Intermetallic</sub>/PVD Coating Obtained by Hybrid Surface Treatment Technology on Aluminium Alloys

Effect of Adding Intermediate Layers on the Interface Bonding Performance of WC-Co Diamond-Coated Cemented Carbide Tool Materials

Effect of Surface Pre-Treatment on the Adhesion between HiPIMS Thick Cu:CuCNx Coating and WC-Co Shim

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