Titanium doped CVD alumina coatings

Hochauer, D.; Mitterer, Christian; Penoy, M.; Michotte, C.; Martinz, H.P.; Kathrein, M.

doi:10.1016/j.surfcoat.2008.09.015

Cited by 28 publications

(6 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4b), which seems to originate from less pronounced diffusion of titanium and/or oxygen through the Al 2 O 3 layer. This might be due to the doping elements which cause a less distinct secondary crack network [45] or that they are blocking diffusion paths within the Al 2 O 3 layer.…”

Section: Resultsmentioning

confidence: 99%

Thermal stability of doped CVD κ-Al2O3 coatings

Hochauer¹,

Mitterer²,

Penoy³

et al. 2010

Surface and Coatings Technology

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Thermal stability of doped CVD κ-Al2O3 coatings

Hochauer¹,

Mitterer²,

Penoy³

et al. 2010

Surface and Coatings Technology

Self Cite

View full text Add to dashboard Cite

“…The elemental composition of the cemented carbide substrates was 88 wt.% WC, 6 wt.% Co and 6 wt.% mixed carbides for the αand 77 wt.% WC, 11 wt.% Co and 12 wt.% mixed carbides for the κ-Al 2 O 3 coating system. The αand κ-Al 2 O 3 top layers, with a thickness of ~9 µm and ~11 µm, respectively, were deposited using AlCl 3 -CO 2 -H 2 -H 2 S precursors at a temperature of 1000 • C and a pressure of 75 mbar [9,16].…”

Section: Methodsmentioning

confidence: 99%

Fracture Properties of α– and ĸ–Al2O3 Hard Coatings Deposited by Chemical Vapor Deposition

Konstantiniuk

Tkadletz

Czettl³

et al. 2021

Coatings

View full text Add to dashboard Cite

Although α– and κ–Al2O3 hard coatings deposited by chemical vapor deposition are well established in the metal-cutting industry for their ability to increase the performance and lifetime of cutting tools, the literature on their fracture properties is scarce. Thus, within this study, the microstructure and mechanical properties of α– and κ–Al2O3 coatings were investigated and compared to each other. X-ray diffraction and scanning electron microscopy combined with electron backscatter diffraction showed that both coatings exhibited a fiber texture, where the α-Al2O3 coating displayed a (0001) texture and the κ–Al2O3 coating a (001) texture with a certain (013) contribution. Higher hardness and Young’s modulus values of 31.0 ± 0.9 GPa and 474.6 ± 12.5 GPa, respectively, were obtained for the α–Al2O3 coating, compared to 24.2 ± 0.8 GPa and 356.8 ± 7.9 GPa for κ–Al2O3. While the α–Al2O3 coating exhibited a higher fracture stress of 8.1 ± 0.3 GPa (compared to 6.4 ± 0.6 GPa for κ–Al2O3), the κ–Al2O3 coating showed a higher fracture toughness of 4.4 ± 0.3 MPa*m1/2 (compared to 3.2 ± 0.3 MPa*m1/2 for alpha).

show abstract

“…In Figure 1b, the O 1s spectra of Al 2 O 3 coatings and various Al 2 O 3 -TiO 2 composite coatings are asymmetric and all of them can be divided into four peaks, centering at about 529.9, 530.3, 531.5, and 532.2 eV, which can be assigned to the oxide ions in the TiO 2 , the lattice oxygen in the Al 2 O 3 , OVs, and absorbed water, respectively. [30][31][32][33][34][35] It can be clearly observed that the OVs ratio in O 1s (the pink line) for Al 2 O 3 -TiO 2 composite coatings greatly reduces compared with that for the bare Al 2 O 3 coating. Significantly, the OVs ratio in O 1s decreases tremendously from 33.05% for the Al 2 O 3 coatings to 11.38% for the 15.56% Al 2 O 3 -TiO 2 composite coating (Table 1).…”

Section: Contact Angle Measurementmentioning

confidence: 97%

Al₂O₃–TiO₂ composite coatings with enhanced anticorrosion properties for 316L stainless steel

Dai

Yang

Zhuge

et al. 2020

Materials & Corrosion

View full text Add to dashboard Cite

316L stainless steel is used as an important structural material in various industries. However, its service life is limited in the presence of chloride ions due to severe chemical corrosion. Herein, a facile radiofrequency magnetron sputtering process is reported for the synthesis of various Al2O3–TiO2 composite coatings as an anticorrosion layer for 316L stainless steel substrates. The enhanced chemical stability of Al2O3–TiO2 composite coatings was investigated by X‐ray photoelectron spectroscopy, electron paramagnetic resonance, and X‐ray diffraction measurements. Moreover, the high specific surface area of Al2O3–TiO2 composite coatings displayed better hydrophobic property which can be confirmed by scanning electron microscopy and contact angle measurements. Finally, the direct characterization of anticorrosion properties was carried out using electrochemical tests. All of the above results exhibited the enhanced anticorrosion properties of Al2O3 coating after the incorporation of TiO2. Significantly, the Al2O3–TiO2 composite coatings with 15.56% Ti content provided the best corrosion resistance for 316L stainless steel.

show abstract

Titanium doped CVD alumina coatings

Cited by 28 publications

References 42 publications

Thermal stability of doped CVD κ-Al2O3 coatings

Thermal stability of doped CVD κ-Al2O3 coatings

Fracture Properties of α– and ĸ–Al2O3 Hard Coatings Deposited by Chemical Vapor Deposition

Al₂O₃–TiO₂ composite coatings with enhanced anticorrosion properties for 316L stainless steel

Contact Info

Product

Resources

About

Titanium doped CVD alumina coatings

Cited by 28 publications

References 42 publications

Thermal stability of doped CVD κ-Al2O3 coatings

Thermal stability of doped CVD κ-Al2O3 coatings

Fracture Properties of α– and ĸ–Al2O3 Hard Coatings Deposited by Chemical Vapor Deposition

Al2O3–TiO2 composite coatings with enhanced anticorrosion properties for 316L stainless steel

Contact Info

Product

Resources

About

Al₂O₃–TiO₂ composite coatings with enhanced anticorrosion properties for 316L stainless steel