Investigations of the bonding layer in commercial CVD coated cemented carbide inserts

Zhi Jie Liu; Zi Kui Liu; Charles McNerny; Pankaj Mehrotra; Aharon Inspektor

doi:10.1016/j.surfcoat.2004.10.112

Investigations of the bonding layer in commercial CVD coated cemented carbide inserts

Zhi Jie Liu, Zi Kui Liu, Charles McNerny, Pankaj Mehrotra, Aharon Inspektor

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The effects of processing parameters on the bonding layer structure between the cemented carbide substrate and the Al₂ O₃ coating were investigated by depositing thick bonding layers under commercial production conditions. Different from the belief in the literature that the bonding layer is a cubic Ti(C,N,O) phase, titanium oxides were observed. Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) measurements were used to determine the compositions and structures of the bonding layer and the Al₂ O₃ layer. It was found that the α-Al₂ O₃ phase formed when there is a bonding layer, and the κ-Al₂O₃ phase formed without the bonding layer. Thermodynamic calculations were conducted to explore the effects of processing parameters on the formation of various oxides. It was suggested that the decomposition efficiency of the gas precursors plays a critical role in the formation of oxides.

Original language	English (US)
Pages (from-to)	161-164
Number of pages	4
Journal	Surface and Coatings Technology
Volume	198
Issue number	1-3 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.surfcoat.2004.10.112
State	Published - Aug 1 2005

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.surfcoat.2004.10.112

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@article{0d006373376b4621bc0d3463b1341c3c,

title = "Investigations of the bonding layer in commercial CVD coated cemented carbide inserts",

abstract = "The effects of processing parameters on the bonding layer structure between the cemented carbide substrate and the Al2 O3 coating were investigated by depositing thick bonding layers under commercial production conditions. Different from the belief in the literature that the bonding layer is a cubic Ti(C,N,O) phase, titanium oxides were observed. Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) measurements were used to determine the compositions and structures of the bonding layer and the Al2 O3 layer. It was found that the α-Al2 O3 phase formed when there is a bonding layer, and the κ-Al2O3 phase formed without the bonding layer. Thermodynamic calculations were conducted to explore the effects of processing parameters on the formation of various oxides. It was suggested that the decomposition efficiency of the gas precursors plays a critical role in the formation of oxides.",

author = "Liu, {Zhi Jie} and Liu, {Zi Kui} and Charles McNerny and Pankaj Mehrotra and Aharon Inspektor",

note = "Funding Information: We gratefully acknowledge the support from the Kennametal and partial financial support from the National Science Foundation through the CAREER Award No. DMR-9983532. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2005",

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doi = "10.1016/j.surfcoat.2004.10.112",

language = "English (US)",

volume = "198",

pages = "161--164",

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T1 - Investigations of the bonding layer in commercial CVD coated cemented carbide inserts

AU - Liu, Zhi Jie

AU - Liu, Zi Kui

AU - McNerny, Charles

AU - Mehrotra, Pankaj

AU - Inspektor, Aharon

N1 - Funding Information: We gratefully acknowledge the support from the Kennametal and partial financial support from the National Science Foundation through the CAREER Award No. DMR-9983532. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2005/8/1

Y1 - 2005/8/1

N2 - The effects of processing parameters on the bonding layer structure between the cemented carbide substrate and the Al2 O3 coating were investigated by depositing thick bonding layers under commercial production conditions. Different from the belief in the literature that the bonding layer is a cubic Ti(C,N,O) phase, titanium oxides were observed. Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) measurements were used to determine the compositions and structures of the bonding layer and the Al2 O3 layer. It was found that the α-Al2 O3 phase formed when there is a bonding layer, and the κ-Al2O3 phase formed without the bonding layer. Thermodynamic calculations were conducted to explore the effects of processing parameters on the formation of various oxides. It was suggested that the decomposition efficiency of the gas precursors plays a critical role in the formation of oxides.

AB - The effects of processing parameters on the bonding layer structure between the cemented carbide substrate and the Al2 O3 coating were investigated by depositing thick bonding layers under commercial production conditions. Different from the belief in the literature that the bonding layer is a cubic Ti(C,N,O) phase, titanium oxides were observed. Energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) measurements were used to determine the compositions and structures of the bonding layer and the Al2 O3 layer. It was found that the α-Al2 O3 phase formed when there is a bonding layer, and the κ-Al2O3 phase formed without the bonding layer. Thermodynamic calculations were conducted to explore the effects of processing parameters on the formation of various oxides. It was suggested that the decomposition efficiency of the gas precursors plays a critical role in the formation of oxides.

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U2 - 10.1016/j.surfcoat.2004.10.112

DO - 10.1016/j.surfcoat.2004.10.112

M3 - Article

AN - SCOPUS:20744440327

SN - 0257-8972

VL - 198

SP - 161

EP - 164

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

IS - 1-3 SPEC. ISS.

ER -

Investigations of the bonding layer in commercial CVD coated cemented carbide inserts

Abstract

All Science Journal Classification (ASJC) codes

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