Coating of fibrous substrates by CVD; analysis of the fiber evolution

Jan H. Scholtz, Jorge E. Gatica, Hendrik J. Viljoen, Vladimir Hlavacek

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In this work the application of CVD technologies for inorganic coating of fibrous substrates is addressed. In analyzing this reaction system it is important not only to consider the transport phenomena in the gas phase but also to take the fiber evolution into account. In CVD applications to the synthesis of inorganic fibers, as in a host of others, deposited layers can reach space scales comparable to the substrate dimensions. In such cases deposit-substrate interaction processes (such as corrosion of the core) might become important and cause the fibers to evolve in space and time. In this study the authors want to stress the importance of the fiber evolution. Based on boundary layer assumptions for the gas phase, a one-dimensional "moving boundary" model for the deposition surface is formulated. The governing equations are solved numerically and analyzed for operating conditions in the actual experimental range. The results serve to identify possible causes for fiber failure under load as well as motivate alternate reactor configurations to optimize the process.

Original languageEnglish (US)
Pages (from-to)190-202
Number of pages13
JournalJournal of Crystal Growth
Volume108
Issue number1-2
DOIs
StatePublished - Jan 2 1991

Fingerprint

Chemical vapor deposition
vapor deposition
coatings
Coatings
fibers
Fibers
Substrates
inorganic coatings
Gases
Inorganic coatings
vapor phases
causes
boundary layers
corrosion
Boundary layers
Deposits
deposits
reactors
Corrosion
synthesis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Coating of fibrous substrates by CVD; analysis of the fiber evolution. / Scholtz, Jan H.; Gatica, Jorge E.; Viljoen, Hendrik J.; Hlavacek, Vladimir.

In: Journal of Crystal Growth, Vol. 108, No. 1-2, 02.01.1991, p. 190-202.

Research output: Contribution to journalArticle

Scholtz, Jan H. ; Gatica, Jorge E. ; Viljoen, Hendrik J. ; Hlavacek, Vladimir. / Coating of fibrous substrates by CVD; analysis of the fiber evolution. In: Journal of Crystal Growth. 1991 ; Vol. 108, No. 1-2. pp. 190-202.
@article{5caa7617405b419e9e9bffe344bfb7ea,
title = "Coating of fibrous substrates by CVD; analysis of the fiber evolution",
abstract = "In this work the application of CVD technologies for inorganic coating of fibrous substrates is addressed. In analyzing this reaction system it is important not only to consider the transport phenomena in the gas phase but also to take the fiber evolution into account. In CVD applications to the synthesis of inorganic fibers, as in a host of others, deposited layers can reach space scales comparable to the substrate dimensions. In such cases deposit-substrate interaction processes (such as corrosion of the core) might become important and cause the fibers to evolve in space and time. In this study the authors want to stress the importance of the fiber evolution. Based on boundary layer assumptions for the gas phase, a one-dimensional {"}moving boundary{"} model for the deposition surface is formulated. The governing equations are solved numerically and analyzed for operating conditions in the actual experimental range. The results serve to identify possible causes for fiber failure under load as well as motivate alternate reactor configurations to optimize the process.",
author = "Scholtz, {Jan H.} and Gatica, {Jorge E.} and Viljoen, {Hendrik J.} and Vladimir Hlavacek",
year = "1991",
month = "1",
day = "2",
doi = "10.1016/0022-0248(91)90366-D",
language = "English (US)",
volume = "108",
pages = "190--202",
journal = "Journal of Crystal Growth",
issn = "0022-0248",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Coating of fibrous substrates by CVD; analysis of the fiber evolution

AU - Scholtz, Jan H.

AU - Gatica, Jorge E.

AU - Viljoen, Hendrik J.

AU - Hlavacek, Vladimir

PY - 1991/1/2

Y1 - 1991/1/2

N2 - In this work the application of CVD technologies for inorganic coating of fibrous substrates is addressed. In analyzing this reaction system it is important not only to consider the transport phenomena in the gas phase but also to take the fiber evolution into account. In CVD applications to the synthesis of inorganic fibers, as in a host of others, deposited layers can reach space scales comparable to the substrate dimensions. In such cases deposit-substrate interaction processes (such as corrosion of the core) might become important and cause the fibers to evolve in space and time. In this study the authors want to stress the importance of the fiber evolution. Based on boundary layer assumptions for the gas phase, a one-dimensional "moving boundary" model for the deposition surface is formulated. The governing equations are solved numerically and analyzed for operating conditions in the actual experimental range. The results serve to identify possible causes for fiber failure under load as well as motivate alternate reactor configurations to optimize the process.

AB - In this work the application of CVD technologies for inorganic coating of fibrous substrates is addressed. In analyzing this reaction system it is important not only to consider the transport phenomena in the gas phase but also to take the fiber evolution into account. In CVD applications to the synthesis of inorganic fibers, as in a host of others, deposited layers can reach space scales comparable to the substrate dimensions. In such cases deposit-substrate interaction processes (such as corrosion of the core) might become important and cause the fibers to evolve in space and time. In this study the authors want to stress the importance of the fiber evolution. Based on boundary layer assumptions for the gas phase, a one-dimensional "moving boundary" model for the deposition surface is formulated. The governing equations are solved numerically and analyzed for operating conditions in the actual experimental range. The results serve to identify possible causes for fiber failure under load as well as motivate alternate reactor configurations to optimize the process.

UR - http://www.scopus.com/inward/record.url?scp=0026412490&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026412490&partnerID=8YFLogxK

U2 - 10.1016/0022-0248(91)90366-D

DO - 10.1016/0022-0248(91)90366-D

M3 - Article

AN - SCOPUS:0026412490

VL - 108

SP - 190

EP - 202

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

SN - 0022-0248

IS - 1-2

ER -