Structural characterization of CN/ZrN superlattice coatings

Mei Ling Wu; Xi Wei Lin; Vinayak P Dravid; Yip-Wah Chung

Structural characterization of CN/ZrN superlattice coatings

Mei Ling Wu^*, Xi Wei Lin, Vinayak P Dravid, Yip-Wah Chung

^*Corresponding author for this work

Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Crystalline CN/ZrN superlattice coatings have been synthesized using a dual-cathode unbalanced magnetron sputtering system. We observed a strong correlation between coating hardness and the occurrence of strong (111) texture for the ZrN component, supporting the hypothesis of pseudomorphic stabilization. At a ZrN-to-CN thickness ratio of three, we obtained a nanoindentation hardness of about 43 GPa. Electron microscopy studies showed that these CN/ZrN superlattice coatings are fully crystalline and dense at small superlattice periods. We observed three extra electron diffraction features that are consistent with the existence of β-C₃N₄. Electron energy-loss spectroscopy revealed that the carbon atoms are in the sp³ state. The combination of all data provides strong evidence for the existence of β-C₃N₄ in these superlattice coatings.

Original language	English (US)
Title of host publication	Hard Coatings Based on Borides, Carbides
Publisher	Minerals, Metals & Materials Soc (TMS)
Pages	17-24
Number of pages	8
State	Published - Jan 1 1998
Event	Proceedings of the 1998 TMS Annual Meeting - San Antonio, TX, USA Duration: Feb 15 1998 → Feb 19 1998

Other

Other	Proceedings of the 1998 TMS Annual Meeting
City	San Antonio, TX, USA
Period	2/15/98 → 2/19/98

ASJC Scopus subject areas

Geology
Metals and Alloys

Cite this

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title = "Structural characterization of CN/ZrN superlattice coatings",

abstract = "Crystalline CN/ZrN superlattice coatings have been synthesized using a dual-cathode unbalanced magnetron sputtering system. We observed a strong correlation between coating hardness and the occurrence of strong (111) texture for the ZrN component, supporting the hypothesis of pseudomorphic stabilization. At a ZrN-to-CN thickness ratio of three, we obtained a nanoindentation hardness of about 43 GPa. Electron microscopy studies showed that these CN/ZrN superlattice coatings are fully crystalline and dense at small superlattice periods. We observed three extra electron diffraction features that are consistent with the existence of β-C3N4. Electron energy-loss spectroscopy revealed that the carbon atoms are in the sp3 state. The combination of all data provides strong evidence for the existence of β-C3N4 in these superlattice coatings.",

author = "Wu, {Mei Ling} and Lin, {Xi Wei} and Dravid, {Vinayak P} and Yip-Wah Chung",

year = "1998",

month = jan,

day = "1",

language = "English (US)",

pages = "17--24",

booktitle = "Hard Coatings Based on Borides, Carbides",

publisher = "Minerals, Metals & Materials Soc (TMS)",

note = "Proceedings of the 1998 TMS Annual Meeting ; Conference date: 15-02-1998 Through 19-02-1998",

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TY - GEN

T1 - Structural characterization of CN/ZrN superlattice coatings

AU - Wu, Mei Ling

AU - Lin, Xi Wei

AU - Dravid, Vinayak P

AU - Chung, Yip-Wah

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Crystalline CN/ZrN superlattice coatings have been synthesized using a dual-cathode unbalanced magnetron sputtering system. We observed a strong correlation between coating hardness and the occurrence of strong (111) texture for the ZrN component, supporting the hypothesis of pseudomorphic stabilization. At a ZrN-to-CN thickness ratio of three, we obtained a nanoindentation hardness of about 43 GPa. Electron microscopy studies showed that these CN/ZrN superlattice coatings are fully crystalline and dense at small superlattice periods. We observed three extra electron diffraction features that are consistent with the existence of β-C3N4. Electron energy-loss spectroscopy revealed that the carbon atoms are in the sp3 state. The combination of all data provides strong evidence for the existence of β-C3N4 in these superlattice coatings.

AB - Crystalline CN/ZrN superlattice coatings have been synthesized using a dual-cathode unbalanced magnetron sputtering system. We observed a strong correlation between coating hardness and the occurrence of strong (111) texture for the ZrN component, supporting the hypothesis of pseudomorphic stabilization. At a ZrN-to-CN thickness ratio of three, we obtained a nanoindentation hardness of about 43 GPa. Electron microscopy studies showed that these CN/ZrN superlattice coatings are fully crystalline and dense at small superlattice periods. We observed three extra electron diffraction features that are consistent with the existence of β-C3N4. Electron energy-loss spectroscopy revealed that the carbon atoms are in the sp3 state. The combination of all data provides strong evidence for the existence of β-C3N4 in these superlattice coatings.

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M3 - Conference contribution

AN - SCOPUS:0031652665

SP - 17

EP - 24

BT - Hard Coatings Based on Borides, Carbides

PB - Minerals, Metals & Materials Soc (TMS)

T2 - Proceedings of the 1998 TMS Annual Meeting

Y2 - 15 February 1998 through 19 February 1998

ER -

Structural characterization of CN/ZrN superlattice coatings

Abstract

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