Hard amorphous nanocomposite coatings with oxidation resistance above 1000°C

J. Musil, J. Vlček, P. Zeman

Результат исследований: Материалы для журналаСтатья

57 Цитирования (Scopus)

Аннотация

This article reports on two classes of novel hard amorphous coatings: (a) Si3N4 MeNx coatings with high (≥50 vol.-%) content of Si3N4 phase; here Me=Zr, Ta, Ti, Mo, W, etc. and x=N/Me is the stoichiometry of MeNx metal nitride phase, and (b) Si-B-C-N coatings with strong covalent bonds. These nanocomposites exhibit high thermal stability against crystallisation and high oxidation resistance, both at temperatures considerably exceeding 1000°C. Hard amorphous coatings were prepared using reactive magnetron sputtering. Properties of sputtered coatings were characterised using the following techniques: X-ray diffraction, electron probe microanalysis, Rutherford backscattering spectrometry, elastic recoil detection, high resolution transmission electron microscopy, selected area electron diffraction, atomic force microscopy, microhardness tester Fischerscope H 100, differential scanning calorimetry and thermogravimetric analysis. It was found that hard amorphous coatings of both new systems exhibit excellent oxidation resistance at high temperatures about 1500 and 1700°C for amorphous Si3N4MeNx and Si-B-C-N coatings respectively.

Язык оригиналаАнглийский
Страницы (с-по)148-154
Число страниц7
ЖурналAdvances in Applied Ceramics
Том107
Номер выпуска3
DOI
СостояниеОпубликовано - 1 июн 2008

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Industrial and Manufacturing Engineering

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