Residual stress study of nanostructured zirconia films obtained by MOCVD and by sol–gel routes

Jouili, Mohamed; Andrieux, M.; Ribot, Patrick; Bleuzen, Anne; Fornasieri, Giulia; Ji, Vincent

doi:10.1016/j.apsusc.2013.03.048

Cited by 4 publications

(1 citation statement)

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“…It can not reach good toughening effect especially in mullite fiber toughening mullite ceramics, if the chemical contents of the fiber and ceramic are exactly the similar. In order to avoid mullite fiber and mullite ceramics are mixed together in high temperature, surface modification to fiber is a kind of effective process method [3,4]. This paper studies the preparation and characterization of ZrO 2 coatings on mullite fiber, which ZrOCl 2 •8H 2 O was chosen as precursor, short mullite fiber surface was coated directly with a layer of ZrO 2 by sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of ZrO<sub>2</sub> Coating by Sol-Gel on Mullite Short Fiber

Zhao

Zhang

Ren

et al. 2013

KEM

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The modified mullite fiber was used to toughen the mullite ceramic, which can effectively overcome the brittleness of ceramic materials and improve the material strength and toughness. Using 8ZrOCl2•H2O as precursor, anhydrous ethanol as solvent, H2O2 as hydrolysis promoter and NH3·H2O as precipitant, the stable and transparent zirconium sol could be obtained by sol-gel process, which coated mullite short fiber. The results showed that the stable and transparent ZrO2 sol was obtained when pH value was 3.8~4.8 and reaction temperature was at 25°C. XRD results indicated that monoclinic ZrO2 particles grew up and formed after heat-treatment at 700°C. The coating ZrO2 film combined with mullite fiber homogeneously and closely, and the film thickness was about 1 μm.

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Section: Introductionmentioning

confidence: 99%