Corrosion of Hot Pressed Si3N4-TiN Composite in sulphuric acid aqueous solution (Articolo in rivista)

Type
Label
  • Corrosion of Hot Pressed Si3N4-TiN Composite in sulphuric acid aqueous solution (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/S0010-938X(03)00077-5 (literal)
Alternative label
  • Medri V., Bracisiewicz M., Ruffini A., Bellosi A. (2003)
    Corrosion of Hot Pressed Si3N4-TiN Composite in sulphuric acid aqueous solution
    in Corrosion science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Medri V., Bracisiewicz M., Ruffini A., Bellosi A. (literal)
Pagina inizio
  • 2525 (literal)
Pagina fine
  • 2539 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 45 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ISTEC, Institute for Science and Technology for Ceramics, Via Granarolo 64, Faenza 48018, Italy (literal)
Titolo
  • Corrosion of Hot Pressed Si3N4-TiN Composite in sulphuric acid aqueous solution (literal)
Abstract
  • The corrosion behaviour of an electroconductive Si3N4 -35 vol % TiN composite, hot pressed with the addition of Al2O3 and Y2O3 as sintering aids, was studied in 1.8 M sulphuric acid aqueous solution at R.T., 40°C and 70°C up to 400 hours. The corrosion, that follows linear kinetics, at R.T. and at 40°C involves only the progressive chemical dissolution of grain boundary phases, in the system Al-Y-Si-Ti-O-N. The chemical attack of TiN occurs at 70°C, while Si3N4 is not affected by the selected corrosive environment. The effect of the corrosion on flexural strength, fracture toughness and electrical resistivity were investigated after a permanence of 400 h at each temperature in the corrosive solution. (literal)
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