Electrodeposition of Pt-Ir alloys on nickel-base single crystal superalloy TMS-75

Feng Wu, Hideyuki Murakami, Yoko Yamabe-Mitarai, Hiroshi Harada, Hideki Katayama, Yoshinobu Yamamoto

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Platinum-iridium alloy coatings from amidosulfuric acid solutions have successfully been electrodeposited on nickel-base single crystal superalloy TMS-75 by direct current method. The effects of electrolyte temperature, current density and mole concentration ratios of [Ir3+]/([PtCl62-]+ [Ir3+]), on the deposition rate, composition and crystallographic structures of Pt-Ir alloy coatings are investigated. It is found that with increasing electrolyte temperature, deposition rate and Ir content increase, whereas the grain size of Pt-Ir alloy coatings decreases. Smooth and dense Pt-Ir alloy coatings can be obtained at 1 A/dm2 and 353 K. Pt-Ir alloy coatings with expected compositions can be readily fabricated by controlling the mole concentration ratios of [Ir3+]/([PtCl62-] +[Ir3+]) in the electrolyte. A detailed investigation of the structure and morphology of electrodeposited Pt-Ir alloy coatings is also presented. XRD analysis revealed that all the coated Pt-Ir alloys have a single phase with f.c.c structure, and the lattice parameters of the coatings decrease linearly with increasing Ir content, suggesting that the coated Pt-Ir alloy system follows the Vegard's law.

Original languageEnglish
Pages (from-to)24-30
Number of pages7
JournalSurface and Coatings Technology
Volume184
Issue number1
DOIs
Publication statusPublished - 2004 Jun 1
Externally publishedYes

Fingerprint

heat resistant alloys
Nickel
Superalloys
Electrodeposition
electrodeposition
Single crystals
nickel
coatings
Coatings
single crystals
Electrolytes
electrolytes
Deposition rates
iridium alloys
Iridium alloys
Platinum alloys
platinum alloys
platinum-iridium alloy
Chemical analysis
Lattice constants

Keywords

  • Electrodeposition
  • Ni-base superalloy
  • Platinum-iridium alloy

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Electrodeposition of Pt-Ir alloys on nickel-base single crystal superalloy TMS-75. / Wu, Feng; Murakami, Hideyuki; Yamabe-Mitarai, Yoko; Harada, Hiroshi; Katayama, Hideki; Yamamoto, Yoshinobu.

In: Surface and Coatings Technology, Vol. 184, No. 1, 01.06.2004, p. 24-30.

Research output: Contribution to journalArticle

Wu, Feng ; Murakami, Hideyuki ; Yamabe-Mitarai, Yoko ; Harada, Hiroshi ; Katayama, Hideki ; Yamamoto, Yoshinobu. / Electrodeposition of Pt-Ir alloys on nickel-base single crystal superalloy TMS-75. In: Surface and Coatings Technology. 2004 ; Vol. 184, No. 1. pp. 24-30.
@article{8bb811b94c5547709ce9312ca42b2a8e,
title = "Electrodeposition of Pt-Ir alloys on nickel-base single crystal superalloy TMS-75",
abstract = "Platinum-iridium alloy coatings from amidosulfuric acid solutions have successfully been electrodeposited on nickel-base single crystal superalloy TMS-75 by direct current method. The effects of electrolyte temperature, current density and mole concentration ratios of [Ir3+]/([PtCl62-]+ [Ir3+]), on the deposition rate, composition and crystallographic structures of Pt-Ir alloy coatings are investigated. It is found that with increasing electrolyte temperature, deposition rate and Ir content increase, whereas the grain size of Pt-Ir alloy coatings decreases. Smooth and dense Pt-Ir alloy coatings can be obtained at 1 A/dm2 and 353 K. Pt-Ir alloy coatings with expected compositions can be readily fabricated by controlling the mole concentration ratios of [Ir3+]/([PtCl62-] +[Ir3+]) in the electrolyte. A detailed investigation of the structure and morphology of electrodeposited Pt-Ir alloy coatings is also presented. XRD analysis revealed that all the coated Pt-Ir alloys have a single phase with f.c.c structure, and the lattice parameters of the coatings decrease linearly with increasing Ir content, suggesting that the coated Pt-Ir alloy system follows the Vegard's law.",
keywords = "Electrodeposition, Ni-base superalloy, Platinum-iridium alloy",
author = "Feng Wu and Hideyuki Murakami and Yoko Yamabe-Mitarai and Hiroshi Harada and Hideki Katayama and Yoshinobu Yamamoto",
year = "2004",
month = "6",
day = "1",
doi = "10.1016/j.surfcoat.2003.10.051",
language = "English",
volume = "184",
pages = "24--30",
journal = "Surface and Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier",
number = "1",

}

TY - JOUR

T1 - Electrodeposition of Pt-Ir alloys on nickel-base single crystal superalloy TMS-75

AU - Wu, Feng

AU - Murakami, Hideyuki

AU - Yamabe-Mitarai, Yoko

AU - Harada, Hiroshi

AU - Katayama, Hideki

AU - Yamamoto, Yoshinobu

PY - 2004/6/1

Y1 - 2004/6/1

N2 - Platinum-iridium alloy coatings from amidosulfuric acid solutions have successfully been electrodeposited on nickel-base single crystal superalloy TMS-75 by direct current method. The effects of electrolyte temperature, current density and mole concentration ratios of [Ir3+]/([PtCl62-]+ [Ir3+]), on the deposition rate, composition and crystallographic structures of Pt-Ir alloy coatings are investigated. It is found that with increasing electrolyte temperature, deposition rate and Ir content increase, whereas the grain size of Pt-Ir alloy coatings decreases. Smooth and dense Pt-Ir alloy coatings can be obtained at 1 A/dm2 and 353 K. Pt-Ir alloy coatings with expected compositions can be readily fabricated by controlling the mole concentration ratios of [Ir3+]/([PtCl62-] +[Ir3+]) in the electrolyte. A detailed investigation of the structure and morphology of electrodeposited Pt-Ir alloy coatings is also presented. XRD analysis revealed that all the coated Pt-Ir alloys have a single phase with f.c.c structure, and the lattice parameters of the coatings decrease linearly with increasing Ir content, suggesting that the coated Pt-Ir alloy system follows the Vegard's law.

AB - Platinum-iridium alloy coatings from amidosulfuric acid solutions have successfully been electrodeposited on nickel-base single crystal superalloy TMS-75 by direct current method. The effects of electrolyte temperature, current density and mole concentration ratios of [Ir3+]/([PtCl62-]+ [Ir3+]), on the deposition rate, composition and crystallographic structures of Pt-Ir alloy coatings are investigated. It is found that with increasing electrolyte temperature, deposition rate and Ir content increase, whereas the grain size of Pt-Ir alloy coatings decreases. Smooth and dense Pt-Ir alloy coatings can be obtained at 1 A/dm2 and 353 K. Pt-Ir alloy coatings with expected compositions can be readily fabricated by controlling the mole concentration ratios of [Ir3+]/([PtCl62-] +[Ir3+]) in the electrolyte. A detailed investigation of the structure and morphology of electrodeposited Pt-Ir alloy coatings is also presented. XRD analysis revealed that all the coated Pt-Ir alloys have a single phase with f.c.c structure, and the lattice parameters of the coatings decrease linearly with increasing Ir content, suggesting that the coated Pt-Ir alloy system follows the Vegard's law.

KW - Electrodeposition

KW - Ni-base superalloy

KW - Platinum-iridium alloy

UR - http://www.scopus.com/inward/record.url?scp=2642568415&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2642568415&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2003.10.051

DO - 10.1016/j.surfcoat.2003.10.051

M3 - Article

VL - 184

SP - 24

EP - 30

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

IS - 1

ER -