Mechanical Properties and Adhesion of Oxide Films Formed on Pure Titanium at High Temperature Corrosive Environments

DOI 3 Citations 5 References

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Other Title
  • 高温腐食環境で純チタン表面に形成される酸化皮膜の機械的特性および密着性

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Description

The oxide films formed on metallic surfaces at high temperature corrosive environments often act as diffusive barriers of oxygen to protect the metal from corrosion. However, damage to metallic materials is possibly accelerated by mechanical fractures and spalling of the oxide films, caused by such as collisions of fly ash and thermal stresses of the oxide films. Investigations on mechanical properties and adhesion of oxide films formed on metal surfaces at high temperature corrosive environments lead to estimating the life time of materials and to searching high temperature corrosion prevention techniques. Both high temperature corrosion and round particle impact tests were performed on pure titanium coupon specimens. Both a particle impact method and an exfoliation/fracture model of oxide films were very useful to examine elastic modulus, fracture stresses and strains, and adhesive stresses of oxide films formed on pure titanium at high temperature environments. The spalling of the titanium oxide films was experimentally reproduced by the temperature decrement calculated by the elastic modulus and the adhesive stress obtained in this study, and by the thermal expansion coefficients of titanium and titanium oxide. These mechanical properties obtained in this study were, therefore, proved to be valid.

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Details 詳細情報について

  • CRID
    1390001206258344960
  • NII Article ID
    130004502887
  • DOI
    10.3323/jcorr.55.25
  • ISSN
    18819664
    09170480
    http://id.crossref.org/issn/09170480
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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