Improve Stability of Dicalcium Silicate/Zirconia Composite Coatings by Post-Spraying Heat Treatment

Abstract:

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The long-term stability of plasma-sprayed dicalcium silicate (C2S) composite coatings is determined by the phase composition, crystallinity, and other properties. Zirconia reinforcement and post-spraying heat treatment are applied to C2S coatings simultaneously in this work. The stability of the coating increases evidently by reinforcement with 70wt% zirconia and heat treatment at 800oC for 4 hours. SEM reveals that the smooth glassy surface of the as-sprayed coatings is replaced by randomly dispersed crystals. Tris-HCl immersion test results show that the dissolution rate of the composite coatings decreases after the heat treatment.

Info:

Periodical:

Solid State Phenomena (Volume 107)

Main Theme:

Edited by:

T. Vilaithong, D. Boonyawan and C. Thongbai

Pages:

141-144

DOI:

10.4028/www.scientific.net/SSP.107.141

Citation:

Y. Xie et al., "Improve Stability of Dicalcium Silicate/Zirconia Composite Coatings by Post-Spraying Heat Treatment", Solid State Phenomena, Vol. 107, pp. 141-144, 2005

Online since:

October 2005

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Price:

$35.00

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