Preparation and corrosion resistance of graded glass coating on PbTe

L. Chen, T. Goto, R. Tu, Ch Guo, T. Hirai

研究成果: Conference article査読

抄録

Lead telluride (PbTe) is a promising material for the thermoelectric power generation system using combustion heat from municipal solid waste. Because the combustion gas from solid waste incinerator generally contains corrosive substances such as HCl and H2SO4, the corrosion resistance of PbTe becomes important for its thermoelectric application. In the present study, SiO2-B2O3-Na2O-ZnO system glasses were coated on PbTe in order to improve the corrosion resistance. Addition of PbO and TeO2 to this system glass significantly improved the adhesion of the glass as well as the oxidation resistance of glass-coated PbTe. However, the addition of PbO and TeO2 degraded the corrosion resistance of the glass coating because the PbO and TeO2 reacted with HCl at high temperature to form volatile chlorides. In order to incorporate the corrosion resistance and adhesion of glass coating, a two-layer glass was coated on PbTe, in which the inner layer contains 60 mass%PbO·TeO2 while the outer layer contains no PbO·TeO2. Corrosion experiments showed that the glass coating with the graded PbO·TeO2 content exhibited excellent adhesion and corrosion resistance at an O2-HCl-Ar atmosphere.

本文言語English
ページ(範囲)256-261
ページ数6
ジャーナルMaterials Science Forum
308-311
DOI
出版ステータスPublished - 1999
イベントProceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 - Dresden, Ger
継続期間: 1998 10 261998 10 29

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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