Effects of Al Content and Addition of Third Element on Fabrication of Ti-Al Intermetallic Coatings by Heat Treatment of Warm-Sprayed Precursors

J. Sienkiewicz, S. Kuroda, K. Minagawa, Hideyuki Murakami, H. Araki, K. J. Kurzydłowski

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Four powder mixtures of titanium and aluminum with 50:50, 40:60, 30:70, and 20:80 atomic ratios were used as feedstock for Warm Spray process to produce composite coatings. A two-stage heat treatment at 600 and 1000 °C was applied to the deposits in order to obtain titanium aluminide intermetallic phases. The microstructure, chemical, and phase composition of the as-deposited and heat-treated coatings were investigated using SEM, EDS, and XRD. It was found that the Al content affects on the thickness expansion of the heat-treated Ti-Al coatings significantly and also has a major influence on the porosity development, which is caused by the Kirkendall effect. The effects of adding a third element Si and heat treatment with pressure to produce denser Ti-Al intermetallic coating were also examined. The investigated hot-pressed coatings with addition of Si exhibited much denser microstructure and contained Ti-Al intermetallic phases with titanium silicide precipitates.

Original languageEnglish
Pages (from-to)749-757
Number of pages9
JournalJournal of Thermal Spray Technology
Volume24
Issue number5
DOIs
Publication statusPublished - 2015 Jun 28
Externally publishedYes

Fingerprint

Intermetallics
intermetallics
heat treatment
Heat treatment
coatings
Fabrication
Coatings
fabrication
Titanium
titanium
Microstructure
Kirkendall effect
Composite coatings
heat
Aluminum
microstructure
Phase composition
Powders
Feedstocks
Precipitates

Keywords

  • coatings
  • diffusion
  • Ti-Al intermetallics
  • warm spray

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Effects of Al Content and Addition of Third Element on Fabrication of Ti-Al Intermetallic Coatings by Heat Treatment of Warm-Sprayed Precursors. / Sienkiewicz, J.; Kuroda, S.; Minagawa, K.; Murakami, Hideyuki; Araki, H.; Kurzydłowski, K. J.

In: Journal of Thermal Spray Technology, Vol. 24, No. 5, 28.06.2015, p. 749-757.

Research output: Contribution to journalArticle

@article{7ba5fc2b39054606a464b4d085b093d2,
title = "Effects of Al Content and Addition of Third Element on Fabrication of Ti-Al Intermetallic Coatings by Heat Treatment of Warm-Sprayed Precursors",
abstract = "Four powder mixtures of titanium and aluminum with 50:50, 40:60, 30:70, and 20:80 atomic ratios were used as feedstock for Warm Spray process to produce composite coatings. A two-stage heat treatment at 600 and 1000 °C was applied to the deposits in order to obtain titanium aluminide intermetallic phases. The microstructure, chemical, and phase composition of the as-deposited and heat-treated coatings were investigated using SEM, EDS, and XRD. It was found that the Al content affects on the thickness expansion of the heat-treated Ti-Al coatings significantly and also has a major influence on the porosity development, which is caused by the Kirkendall effect. The effects of adding a third element Si and heat treatment with pressure to produce denser Ti-Al intermetallic coating were also examined. The investigated hot-pressed coatings with addition of Si exhibited much denser microstructure and contained Ti-Al intermetallic phases with titanium silicide precipitates.",
keywords = "coatings, diffusion, Ti-Al intermetallics, warm spray",
author = "J. Sienkiewicz and S. Kuroda and K. Minagawa and Hideyuki Murakami and H. Araki and Kurzydłowski, {K. J.}",
year = "2015",
month = "6",
day = "28",
doi = "10.1007/s11666-015-0245-z",
language = "English",
volume = "24",
pages = "749--757",
journal = "Journal of Thermal Spray Technology",
issn = "1059-9630",
publisher = "Springer New York",
number = "5",

}

TY - JOUR

T1 - Effects of Al Content and Addition of Third Element on Fabrication of Ti-Al Intermetallic Coatings by Heat Treatment of Warm-Sprayed Precursors

AU - Sienkiewicz, J.

AU - Kuroda, S.

AU - Minagawa, K.

AU - Murakami, Hideyuki

AU - Araki, H.

AU - Kurzydłowski, K. J.

PY - 2015/6/28

Y1 - 2015/6/28

N2 - Four powder mixtures of titanium and aluminum with 50:50, 40:60, 30:70, and 20:80 atomic ratios were used as feedstock for Warm Spray process to produce composite coatings. A two-stage heat treatment at 600 and 1000 °C was applied to the deposits in order to obtain titanium aluminide intermetallic phases. The microstructure, chemical, and phase composition of the as-deposited and heat-treated coatings were investigated using SEM, EDS, and XRD. It was found that the Al content affects on the thickness expansion of the heat-treated Ti-Al coatings significantly and also has a major influence on the porosity development, which is caused by the Kirkendall effect. The effects of adding a third element Si and heat treatment with pressure to produce denser Ti-Al intermetallic coating were also examined. The investigated hot-pressed coatings with addition of Si exhibited much denser microstructure and contained Ti-Al intermetallic phases with titanium silicide precipitates.

AB - Four powder mixtures of titanium and aluminum with 50:50, 40:60, 30:70, and 20:80 atomic ratios were used as feedstock for Warm Spray process to produce composite coatings. A two-stage heat treatment at 600 and 1000 °C was applied to the deposits in order to obtain titanium aluminide intermetallic phases. The microstructure, chemical, and phase composition of the as-deposited and heat-treated coatings were investigated using SEM, EDS, and XRD. It was found that the Al content affects on the thickness expansion of the heat-treated Ti-Al coatings significantly and also has a major influence on the porosity development, which is caused by the Kirkendall effect. The effects of adding a third element Si and heat treatment with pressure to produce denser Ti-Al intermetallic coating were also examined. The investigated hot-pressed coatings with addition of Si exhibited much denser microstructure and contained Ti-Al intermetallic phases with titanium silicide precipitates.

KW - coatings

KW - diffusion

KW - Ti-Al intermetallics

KW - warm spray

UR - http://www.scopus.com/inward/record.url?scp=84929955886&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84929955886&partnerID=8YFLogxK

U2 - 10.1007/s11666-015-0245-z

DO - 10.1007/s11666-015-0245-z

M3 - Article

AN - SCOPUS:84929955886

VL - 24

SP - 749

EP - 757

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

SN - 1059-9630

IS - 5

ER -