Plasma-sprayed 3.9YSZ porous coatings with mille-feuille structure and high composite porosity for SOFC applications

Hann Pyng Wu, Kuan Zong Fung

研究成果: Article

摘要

A porous coating process for direct-oxidation solid oxide fuel cell (SOFC) electrodes that reduces manufacturing costs and production time is proposed. The process uses Al alloy-polyester as a pore former to create a mille-feuille structure and high porosity in plasma-sprayed 3.9mol% yttria-stabilized zirconia (3.9YSZ) coatings. With an insufficient amount of pore former (35vol.%), the as-sprayed coating surface has a higher surface roughness (Ra=12-13μm). When a sufficient amount of pore former (50vol.%) is used, the as-sprayed coating surface roughness (Ra) is 10-11μm. Apparent porosities in the range of 41.2 to 56.4vol.% are obtained for the etched and burned plasma sprayed coating. The porosity created with a sufficient amount of pore former (50vol.%) is significantly higher than that created with an insufficient amount (35vol.%). The monoclinic phase originally in the 3.9YSZ feedstock powder almost completely disappears after plasma spraying.

原文English
頁(從 - 到)132-139
頁數8
期刊Surface and Coatings Technology
228
DOIs
出版狀態Published - 2013 八月 15

指紋

Sprayed coatings
Yttria stabilized zirconia
solid oxide fuel cells
yttria-stabilized zirconia
Solid oxide fuel cells (SOFC)
Porosity
porosity
Plasmas
coatings
Coatings
composite materials
Composite materials
sprayed coatings
Surface roughness
Polyesters
Plasma spraying
Powders
Feedstocks
surface roughness
Oxidation

All Science Journal Classification (ASJC) codes

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

引用此文

@article{f713f4152c97420c9051233586568052,
title = "Plasma-sprayed 3.9YSZ porous coatings with mille-feuille structure and high composite porosity for SOFC applications",
abstract = "A porous coating process for direct-oxidation solid oxide fuel cell (SOFC) electrodes that reduces manufacturing costs and production time is proposed. The process uses Al alloy-polyester as a pore former to create a mille-feuille structure and high porosity in plasma-sprayed 3.9mol{\%} yttria-stabilized zirconia (3.9YSZ) coatings. With an insufficient amount of pore former (35vol.{\%}), the as-sprayed coating surface has a higher surface roughness (Ra=12-13μm). When a sufficient amount of pore former (50vol.{\%}) is used, the as-sprayed coating surface roughness (Ra) is 10-11μm. Apparent porosities in the range of 41.2 to 56.4vol.{\%} are obtained for the etched and burned plasma sprayed coating. The porosity created with a sufficient amount of pore former (50vol.{\%}) is significantly higher than that created with an insufficient amount (35vol.{\%}). The monoclinic phase originally in the 3.9YSZ feedstock powder almost completely disappears after plasma spraying.",
author = "Wu, {Hann Pyng} and Fung, {Kuan Zong}",
year = "2013",
month = "8",
day = "15",
doi = "10.1016/j.surfcoat.2013.04.019",
language = "English",
volume = "228",
pages = "132--139",
journal = "Surface and Coatings Technology",
issn = "0257-8972",
publisher = "Elsevier",

}

TY - JOUR

T1 - Plasma-sprayed 3.9YSZ porous coatings with mille-feuille structure and high composite porosity for SOFC applications

AU - Wu, Hann Pyng

AU - Fung, Kuan Zong

PY - 2013/8/15

Y1 - 2013/8/15

N2 - A porous coating process for direct-oxidation solid oxide fuel cell (SOFC) electrodes that reduces manufacturing costs and production time is proposed. The process uses Al alloy-polyester as a pore former to create a mille-feuille structure and high porosity in plasma-sprayed 3.9mol% yttria-stabilized zirconia (3.9YSZ) coatings. With an insufficient amount of pore former (35vol.%), the as-sprayed coating surface has a higher surface roughness (Ra=12-13μm). When a sufficient amount of pore former (50vol.%) is used, the as-sprayed coating surface roughness (Ra) is 10-11μm. Apparent porosities in the range of 41.2 to 56.4vol.% are obtained for the etched and burned plasma sprayed coating. The porosity created with a sufficient amount of pore former (50vol.%) is significantly higher than that created with an insufficient amount (35vol.%). The monoclinic phase originally in the 3.9YSZ feedstock powder almost completely disappears after plasma spraying.

AB - A porous coating process for direct-oxidation solid oxide fuel cell (SOFC) electrodes that reduces manufacturing costs and production time is proposed. The process uses Al alloy-polyester as a pore former to create a mille-feuille structure and high porosity in plasma-sprayed 3.9mol% yttria-stabilized zirconia (3.9YSZ) coatings. With an insufficient amount of pore former (35vol.%), the as-sprayed coating surface has a higher surface roughness (Ra=12-13μm). When a sufficient amount of pore former (50vol.%) is used, the as-sprayed coating surface roughness (Ra) is 10-11μm. Apparent porosities in the range of 41.2 to 56.4vol.% are obtained for the etched and burned plasma sprayed coating. The porosity created with a sufficient amount of pore former (50vol.%) is significantly higher than that created with an insufficient amount (35vol.%). The monoclinic phase originally in the 3.9YSZ feedstock powder almost completely disappears after plasma spraying.

UR - http://www.scopus.com/inward/record.url?scp=84879460721&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84879460721&partnerID=8YFLogxK

U2 - 10.1016/j.surfcoat.2013.04.019

DO - 10.1016/j.surfcoat.2013.04.019

M3 - Article

AN - SCOPUS:84879460721

VL - 228

SP - 132

EP - 139

JO - Surface and Coatings Technology

JF - Surface and Coatings Technology

SN - 0257-8972

ER -