In situ visualization of impacting phenomena of plasma-sprayed zirconia: From single splat to coating formation

Kentaro Shinoda, Hideyuki Murakami, Seiji Kuroda, Kohsei Takehara, Sachio Oki

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The authors have developed an in situ monitoring system for particle impacts under atmospheric dc plasma spraying conditions. This system utilized a high-speed video camera coupled with a long-distance microscope, and was capable of capturing the particle-impinging phenomena at one million frames per second. To understand the coating formation mechanism, two approaches were attempted, i.e., observation of the single splat formation and the subsequent coating formation. In the former case, the deformation and cooling processes of yttria-stabilized zirconia (YSZ) droplets impinging on substrates were successfully captured. In the latter case, multiple-droplet-impacting phenomena were observed as an ensemble treatment. Representing the coating process, the tower formation (0-dimensional) and bead formation (1-dimensional) were observed under typical plasma spray conditions for thermal barrier coatings using a triggering system coupled with the motion of a robot. The obtained images clearly showed the coating formation resulting from the integration of single splats.

Original languageEnglish
Pages (from-to)623-630
Number of pages8
JournalJournal of Thermal Spray Technology
Volume17
Issue number5-6
DOIs
Publication statusPublished - 2008 Oct 30
Externally publishedYes

Fingerprint

zirconium oxides
Zirconia
Visualization
Plasmas
coatings
Coatings
Thermal barrier coatings
Plasma spraying
Yttria stabilized zirconia
High speed cameras
Video cameras
Towers
Microscopes
plasma spraying
towers
Robots
yttria-stabilized zirconia
Cooling
robots
beads

Keywords

  • Coatings for gas turbine components
  • Diagnostics and control
  • Influence of spray parameters
  • TBC topcoats

ASJC Scopus subject areas

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

Cite this

In situ visualization of impacting phenomena of plasma-sprayed zirconia : From single splat to coating formation. / Shinoda, Kentaro; Murakami, Hideyuki; Kuroda, Seiji; Takehara, Kohsei; Oki, Sachio.

In: Journal of Thermal Spray Technology, Vol. 17, No. 5-6, 30.10.2008, p. 623-630.

Research output: Contribution to journalArticle

Shinoda, Kentaro ; Murakami, Hideyuki ; Kuroda, Seiji ; Takehara, Kohsei ; Oki, Sachio. / In situ visualization of impacting phenomena of plasma-sprayed zirconia : From single splat to coating formation. In: Journal of Thermal Spray Technology. 2008 ; Vol. 17, No. 5-6. pp. 623-630.
@article{1f946fa68da74b83958686f543d5ac7f,
title = "In situ visualization of impacting phenomena of plasma-sprayed zirconia: From single splat to coating formation",
abstract = "The authors have developed an in situ monitoring system for particle impacts under atmospheric dc plasma spraying conditions. This system utilized a high-speed video camera coupled with a long-distance microscope, and was capable of capturing the particle-impinging phenomena at one million frames per second. To understand the coating formation mechanism, two approaches were attempted, i.e., observation of the single splat formation and the subsequent coating formation. In the former case, the deformation and cooling processes of yttria-stabilized zirconia (YSZ) droplets impinging on substrates were successfully captured. In the latter case, multiple-droplet-impacting phenomena were observed as an ensemble treatment. Representing the coating process, the tower formation (0-dimensional) and bead formation (1-dimensional) were observed under typical plasma spray conditions for thermal barrier coatings using a triggering system coupled with the motion of a robot. The obtained images clearly showed the coating formation resulting from the integration of single splats.",
keywords = "Coatings for gas turbine components, Diagnostics and control, Influence of spray parameters, TBC topcoats",
author = "Kentaro Shinoda and Hideyuki Murakami and Seiji Kuroda and Kohsei Takehara and Sachio Oki",
year = "2008",
month = "10",
day = "30",
doi = "10.1007/s11666-008-9221-1",
language = "English",
volume = "17",
pages = "623--630",
journal = "Journal of Thermal Spray Technology",
issn = "1059-9630",
publisher = "Springer New York",
number = "5-6",

}

TY - JOUR

T1 - In situ visualization of impacting phenomena of plasma-sprayed zirconia

T2 - From single splat to coating formation

AU - Shinoda, Kentaro

AU - Murakami, Hideyuki

AU - Kuroda, Seiji

AU - Takehara, Kohsei

AU - Oki, Sachio

PY - 2008/10/30

Y1 - 2008/10/30

N2 - The authors have developed an in situ monitoring system for particle impacts under atmospheric dc plasma spraying conditions. This system utilized a high-speed video camera coupled with a long-distance microscope, and was capable of capturing the particle-impinging phenomena at one million frames per second. To understand the coating formation mechanism, two approaches were attempted, i.e., observation of the single splat formation and the subsequent coating formation. In the former case, the deformation and cooling processes of yttria-stabilized zirconia (YSZ) droplets impinging on substrates were successfully captured. In the latter case, multiple-droplet-impacting phenomena were observed as an ensemble treatment. Representing the coating process, the tower formation (0-dimensional) and bead formation (1-dimensional) were observed under typical plasma spray conditions for thermal barrier coatings using a triggering system coupled with the motion of a robot. The obtained images clearly showed the coating formation resulting from the integration of single splats.

AB - The authors have developed an in situ monitoring system for particle impacts under atmospheric dc plasma spraying conditions. This system utilized a high-speed video camera coupled with a long-distance microscope, and was capable of capturing the particle-impinging phenomena at one million frames per second. To understand the coating formation mechanism, two approaches were attempted, i.e., observation of the single splat formation and the subsequent coating formation. In the former case, the deformation and cooling processes of yttria-stabilized zirconia (YSZ) droplets impinging on substrates were successfully captured. In the latter case, multiple-droplet-impacting phenomena were observed as an ensemble treatment. Representing the coating process, the tower formation (0-dimensional) and bead formation (1-dimensional) were observed under typical plasma spray conditions for thermal barrier coatings using a triggering system coupled with the motion of a robot. The obtained images clearly showed the coating formation resulting from the integration of single splats.

KW - Coatings for gas turbine components

KW - Diagnostics and control

KW - Influence of spray parameters

KW - TBC topcoats

UR - http://www.scopus.com/inward/record.url?scp=57449083210&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=57449083210&partnerID=8YFLogxK

U2 - 10.1007/s11666-008-9221-1

DO - 10.1007/s11666-008-9221-1

M3 - Article

AN - SCOPUS:57449083210

VL - 17

SP - 623

EP - 630

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

SN - 1059-9630

IS - 5-6

ER -