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Cracking and decohesion of sol-gel hybrid coatings on metallic substrates

Journal Article


Abstract


  • Thin film coatings based on organically modified silanes were synthesized using sol-gel technology. Various mixtures of tetraethoxysilane and glycidoxypropyltrimethoxysilane precursors were used to produce sol-gel coatings on as-received and thermally oxidised copper, aluminium and titanium substrates. The mechanical properties and adhesion behaviour of the coatings were assessed using nano-indentation and microtensile testing, respectively. The relationship between the film structure and its mechanical response is examined. It is shown that the mechanical properties (hardness and Young's modulus) of the coatings are influenced dramatically by the organic substituent and the presence of an oxide layer thermally grown on the substrate material prior to deposition plays an important role on the film/substrate adhesion behaviour.

Publication Date


  • 2004

Citation


  • Latella, B. A., Ignat, M., Barb��, C. J., Cassidy, D. J., & Li, H. (2004). Cracking and decohesion of sol-gel hybrid coatings on metallic substrates. Journal of Sol-Gel Science and Technology, 31(1-3 SPEC.ISS.), 143-149. doi:10.1023/B:JSST.0000047976.41395.51

Scopus Eid


  • 2-s2.0-9244221631

Start Page


  • 143

End Page


  • 149

Volume


  • 31

Issue


  • 1-3 SPEC.ISS.

Place Of Publication


Abstract


  • Thin film coatings based on organically modified silanes were synthesized using sol-gel technology. Various mixtures of tetraethoxysilane and glycidoxypropyltrimethoxysilane precursors were used to produce sol-gel coatings on as-received and thermally oxidised copper, aluminium and titanium substrates. The mechanical properties and adhesion behaviour of the coatings were assessed using nano-indentation and microtensile testing, respectively. The relationship between the film structure and its mechanical response is examined. It is shown that the mechanical properties (hardness and Young's modulus) of the coatings are influenced dramatically by the organic substituent and the presence of an oxide layer thermally grown on the substrate material prior to deposition plays an important role on the film/substrate adhesion behaviour.

Publication Date


  • 2004

Citation


  • Latella, B. A., Ignat, M., Barb��, C. J., Cassidy, D. J., & Li, H. (2004). Cracking and decohesion of sol-gel hybrid coatings on metallic substrates. Journal of Sol-Gel Science and Technology, 31(1-3 SPEC.ISS.), 143-149. doi:10.1023/B:JSST.0000047976.41395.51

Scopus Eid


  • 2-s2.0-9244221631

Start Page


  • 143

End Page


  • 149

Volume


  • 31

Issue


  • 1-3 SPEC.ISS.

Place Of Publication