Heat Treatment Induced Phase Transformations in Zirconia and Yttria-Stabilized Zirconia Monolithic Aerogels

Jorge Torres-Rodríguez,József Kalmár,Melita Menelaou,Ladislav Čelko,Karel Dvořak,Jaroslav Cihlář,Jozef Kaiser,Enikő Győri,Péter Veres,István Fábián,István Lázár

The Journal of Supercritical Fluids（2019）

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摘要

•ZrO2 and YSZ aerogels derived by combining sol-gel method and supercritical drying.•Evolution of crystallinity was observed by in-situ XRD measurements up to 1200 °C.•Phase transformation of zirconia (ZrO2) is affected by crystallite size growth.•Yttria-stabilized zirconia (YSZ) aerogel forms stable single-phase t-ZrO2 at 455 °C.

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关键词

Aerogel,Zirconia,Yttria-stabilized zirconia,Heat treatment,Phase transformation

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