Inter-diffusion of carbon into niobium coatings deposited on graphite

S. Barzilai; A. Raveh; N. Frage

doi:10.1016/j.tsf.2005.09.106

Inter-diffusion of carbon into niobium coatings deposited on graphite

S. Barzilai, A. Raveh, N. Frage

Department of Materials Engineering

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

32 Scopus citations

Abstract

The inter-diffusion of carbon (originating from a graphite substrate) into a niobium coating and the fabrication of its carbides by heat treatment in the temperature range of 1073-1773 K was studied. The thickness of the Nb ₂C and NbC phases formed after heat treatment as well as the inter-diffusion coefficients for the formation of the carbide layers were also studied. It was found that the carbide layer growth displayed parabolic behavior patterns inherent in the growth rate constants (K) of Nb₂C and NbC layers. By assuming that the inter-diffusion coefficients are independent of concentration, it was possible to determine the inter-diffusion coefficients of carbon D^c into Nb₂C and NbC layers as a function of temperature.

Original language	English
Pages (from-to)	450-456
Number of pages	7
Journal	Thin Solid Films
Volume	496
Issue number	2
DOIs	https://doi.org/10.1016/j.tsf.2005.09.106
State	Published - 21 Feb 2006

Keywords

Carbides
Carbon
Diffusion
Niobium
Sputtering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/j.tsf.2005.09.106

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title = "Inter-diffusion of carbon into niobium coatings deposited on graphite",

abstract = "The inter-diffusion of carbon (originating from a graphite substrate) into a niobium coating and the fabrication of its carbides by heat treatment in the temperature range of 1073-1773 K was studied. The thickness of the Nb 2C and NbC phases formed after heat treatment as well as the inter-diffusion coefficients for the formation of the carbide layers were also studied. It was found that the carbide layer growth displayed parabolic behavior patterns inherent in the growth rate constants (K) of Nb2C and NbC layers. By assuming that the inter-diffusion coefficients are independent of concentration, it was possible to determine the inter-diffusion coefficients of carbon Dc into Nb2C and NbC layers as a function of temperature.",

keywords = "Carbides, Carbon, Diffusion, Niobium, Sputtering",

author = "S. Barzilai and A. Raveh and N. Frage",

note = "Funding Information: The authors wish to thank Mr. Avi Ben-Shabat for his expert technical assistance, Mr. E. Boublil for SEM micrographs, and to Ms. Chava Silverman for editing the manuscript. This work was supported by a grant from the Israeli Council of High Education and the Israeli Atomic Energy Commission.",

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doi = "10.1016/j.tsf.2005.09.106",

language = "English",

volume = "496",

pages = "450--456",

journal = "Thin Solid Films",

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publisher = "Elsevier B.V.",

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T1 - Inter-diffusion of carbon into niobium coatings deposited on graphite

AU - Barzilai, S.

AU - Raveh, A.

AU - Frage, N.

N1 - Funding Information: The authors wish to thank Mr. Avi Ben-Shabat for his expert technical assistance, Mr. E. Boublil for SEM micrographs, and to Ms. Chava Silverman for editing the manuscript. This work was supported by a grant from the Israeli Council of High Education and the Israeli Atomic Energy Commission.

PY - 2006/2/21

Y1 - 2006/2/21

N2 - The inter-diffusion of carbon (originating from a graphite substrate) into a niobium coating and the fabrication of its carbides by heat treatment in the temperature range of 1073-1773 K was studied. The thickness of the Nb 2C and NbC phases formed after heat treatment as well as the inter-diffusion coefficients for the formation of the carbide layers were also studied. It was found that the carbide layer growth displayed parabolic behavior patterns inherent in the growth rate constants (K) of Nb2C and NbC layers. By assuming that the inter-diffusion coefficients are independent of concentration, it was possible to determine the inter-diffusion coefficients of carbon Dc into Nb2C and NbC layers as a function of temperature.

AB - The inter-diffusion of carbon (originating from a graphite substrate) into a niobium coating and the fabrication of its carbides by heat treatment in the temperature range of 1073-1773 K was studied. The thickness of the Nb 2C and NbC phases formed after heat treatment as well as the inter-diffusion coefficients for the formation of the carbide layers were also studied. It was found that the carbide layer growth displayed parabolic behavior patterns inherent in the growth rate constants (K) of Nb2C and NbC layers. By assuming that the inter-diffusion coefficients are independent of concentration, it was possible to determine the inter-diffusion coefficients of carbon Dc into Nb2C and NbC layers as a function of temperature.

KW - Carbides

KW - Carbon

KW - Diffusion

KW - Niobium

KW - Sputtering

UR - https://www.scopus.com/pages/publications/28044459226

U2 - 10.1016/j.tsf.2005.09.106

DO - 10.1016/j.tsf.2005.09.106

M3 - Article

AN - SCOPUS:28044459226

SN - 0040-6090

VL - 496

SP - 450

EP - 456

JO - Thin Solid Films

JF - Thin Solid Films

IS - 2

ER -

Inter-diffusion of carbon into niobium coatings deposited on graphite

Abstract

Keywords

ASJC Scopus subject areas

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