Paper Title:
Microscratch Analysis and Interfacial Toughness of Catalyst Coating on Electrolyte Polymer in Micro Fuel Cells
  Abstract

This study combined microscratch test and fracture-mechanical analysis to assess the interfacial reliability of Nafion and Pt/Ru catalyst layers in micro fuel cells. Scratch test was used to determine the critical load for interfacial failure, while fracture-mechanical analysis was used to quantify the adhesion between Nafion (the electrolyte polymer substrate) and Pt/Ru alloy (catalyst coating). We also proposed a key of solving ambiguous problems in indentation cracking test by determining geometric information from crack propagation and critical points, as for a hard porous coating on a soft substrate. A comparative analysis of three coating methods, spray, decalcomania and their mixed process, was done to assess the validity of our new method.

  Info
Periodical
Solid State Phenomena (Volumes 124-126)
Edited by
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
Pages
1633-1636
DOI
10.4028/www.scientific.net/SSP.124-126.1633
Citation
G. J. Lee, H. K. Lee, D. I. Kwon, "Microscratch Analysis and Interfacial Toughness of Catalyst Coating on Electrolyte Polymer in Micro Fuel Cells", Solid State Phenomena, Vols. 124-126, pp. 1633-1636, 2007
Online since
June 2007
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Price
$32.00
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