Corrosion Behavior of Carbon Fibers and Graphitized Carbon Fibers in Hot Phosphoric Acid

DOI Web Site Web Site 4 Citations 9 References

Bibliographic Information

Other Title
  • 炭素繊維及び黒鉛化炭素繊維の熱リン酸中における腐食挙動
  • タンソ センイ オヨビ コクエンカ タンソ センイ ノ ネツ リンサン チュウ ニ オケル フショク キョドウ

Search this article

Abstract

<p>It became clear that carbon fibers exhibited different graghitizability even treated at the same temperature depending on their precursor, and highly graphitized carbon fibers had high corrosion resisitibility in hot phosphoric acid. Therefore, it was concluded that the corrosion resisitibility of the PAFC electrode substrate in the hot phosphoric acid can be improved by use of highly graphitizable carbon fiber as a raw materia1. Under a mild corrosion condition, graghitizability of the fiber surface was important for improving corrosion resisitibility. Results showed that the corrosion of the carbon fiber occurred from a part of low graphitizability of the surface, and the carbon surface layer was converted to oxidized carbon compounds. In addition, specific surface area of the carbon fibers increased by corrosion to form micropores or surface roughness showing the extent of such changes depended greatly upon the graghitizability of the carbon fiber</p>

Journal

  • Electrochemistry

    Electrochemistry 67 (3), 259-263, 1999-03-05

    The Electrochemical Society of Japan

Citations (4)*help

See more

References(9)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top